Blue Angels, San Francisco |
Wednesday, April 25, 2018
Exit Hold, Proceed As Cleared
It has been an up and down health ride these last three months
or so, which means some things have been good, some things have been a little
concerning, but we are now getting things resolved and back on track, but with
some changes.
As you probably know, almost exactly two years ago I was
lucky to get placed in a research study and was randomly selected to try two
immunology drugs, to see if they were more effective as a first treatment than
chemo or chemo in combination with one immunology drug. The first year went really well. The lesions were reduced significantly and I
had almost no side effects. Then the side effects started kicking in, itching,
joint pain, stiffness, lack of appetite, fatigue, but I accepted that as the
price to pay for a continued reduction in the size of the lesions. Then, my liver, and to a lesser extent my
pancreas, started showing signs of stress, based on biweekly blood tests. So my oncologist, Dr. Alan Kramer, whom I like
very much, respect, and have complete confidence in, recommended we give my
system a rest from the immune drugs and take steroids to eliminate any
inflammation.
That part has been great.
Within 24 hours my pain was gone, the itching was gone (we’re talking
about, “Oh my god, will anything stop this itching?”), the stiffness and
inflexibility was gone, and very importantly, my appetite was back and I quit
losing weight. I had a normal life again
and was so relieved.
But it turns out that the problems with the liver, bile duct
specifically, were probably not being caused by inflammation, but rather by
lymph nodes pressing on the duct. What
is causing the pressure can’t be discerned for sure from the CT scans, and a
biopsy doesn’t seem to be warranted, because whatever it is needs to be treated
with either steroids or chemotherapy, and I’m on both. So that is the direction we’re going, starting
at my next appointment, a week from now.
Dr. Kramer has said that this chemo is very well tolerated,
maybe a rash, maybe some nausea, and has been effective with others. So, having been such of fan of the immunology
therapy, it is hard to put it aside, but it’s effectiveness seems to have
ended. As Dr. Kramer was giving instructions
to his nurses, I said, “I feel like I’m changing from a Red Sox fan to a Yankees
fan.” Which is about as likely for me to
do as it would a Manhattan liberal announcing that he has become a neo
conservative. No more power lunch tables for you, you’re going back next to the
restrooms.
It’s a nice restroom though, with cloth towels and nice
smelling soap. I’m okay.
Thursday, May 18, 2017
Hold As Published
When that clearance is issued it is normally followed by,
“Expect further clearance in xx minutes.” In this case, expect further
clearance in about a year.
Let me explain.
This blog is going to enter a hold for about a year for several reasons. The first and most obvious is that it has been in slow flight for a couple of years anyway, and there are two reasons for that. The first is that I have kind of run out of war stories and important flying concepts to write about. The second is directly related: I’m not flying anymore. I don’t experience new situations and even when something comes up, in the news for instance, I’m not sure my now 10 years lack of direct experience with aviation makes me a relevant commentator anymore. Everything in aviation is now flat screen and computer generated, even at the general aviation level, and my experience with that stopped with the Boeing 757/767, an early hybrid of both round dial and flat screen displays. ADS-B was just coming in as I was going out. Virtually all navigation is now GPS, supplemented with DME and INS—if you’ve got it, use it--but GPS can function perfectly at all levels on its own. So, even though navigation is kind of one of my areas of expertise, there isn’t much to add anymore.
So my legitimacy as an aviation writer is somewhat suspect at this point. But there’s more. I was diagnosed with lung cancer (adeno carcinoma, for the medical aviators among us) about a year ago. I was lucky enough to get into a research trial sponsored by Bristol Meyers Squibb and got lucky again when I was randomly assigned to the group that receives two of their immunotherapy drugs. So far I have responded well with minimal side effects. I will stay on this regime for as long as the therapy is effective and doesn’t turn on healthy organs, which it can do. The trial ends for me a year from now, and after that my treatments will probably be continued outside the study. Hence the “expect further clearance” in about a year.
This also means I can’t hold a Third Class Medical. (At least, I assume I can’t. I don’t want to take a chance on trying to get one, get turned down, and lose my chance to fly Light Sport Aircraft.) So my thoughts about flying turn from what sort of serious transportation type aircraft would I like to have, if I could just find a way to finance one, to if I’m limited to LSA, what might that be. I’m thinking Champ, an aircraft I have had a long longing for. We’ll see.
In any case, the picture above, taken at Oshkosh several years ago of an award winning Ryan PT-22, and probably the most beautiful aircraft I’ve ever seen (but you can see a bunch of beautiful aircraft at Oshkosh), is my inspiration.
I leave you with one aviation thought: Good landings mean nothing. Anyone can pull off a good landing, even after a horrible mess of a flight. But managing an aircraft to arrive, uneventfully, at a point where a safe landing can be made means everything. Don’t ever forget that.
Let me explain.
This blog is going to enter a hold for about a year for several reasons. The first and most obvious is that it has been in slow flight for a couple of years anyway, and there are two reasons for that. The first is that I have kind of run out of war stories and important flying concepts to write about. The second is directly related: I’m not flying anymore. I don’t experience new situations and even when something comes up, in the news for instance, I’m not sure my now 10 years lack of direct experience with aviation makes me a relevant commentator anymore. Everything in aviation is now flat screen and computer generated, even at the general aviation level, and my experience with that stopped with the Boeing 757/767, an early hybrid of both round dial and flat screen displays. ADS-B was just coming in as I was going out. Virtually all navigation is now GPS, supplemented with DME and INS—if you’ve got it, use it--but GPS can function perfectly at all levels on its own. So, even though navigation is kind of one of my areas of expertise, there isn’t much to add anymore.
So my legitimacy as an aviation writer is somewhat suspect at this point. But there’s more. I was diagnosed with lung cancer (adeno carcinoma, for the medical aviators among us) about a year ago. I was lucky enough to get into a research trial sponsored by Bristol Meyers Squibb and got lucky again when I was randomly assigned to the group that receives two of their immunotherapy drugs. So far I have responded well with minimal side effects. I will stay on this regime for as long as the therapy is effective and doesn’t turn on healthy organs, which it can do. The trial ends for me a year from now, and after that my treatments will probably be continued outside the study. Hence the “expect further clearance” in about a year.
This also means I can’t hold a Third Class Medical. (At least, I assume I can’t. I don’t want to take a chance on trying to get one, get turned down, and lose my chance to fly Light Sport Aircraft.) So my thoughts about flying turn from what sort of serious transportation type aircraft would I like to have, if I could just find a way to finance one, to if I’m limited to LSA, what might that be. I’m thinking Champ, an aircraft I have had a long longing for. We’ll see.
In any case, the picture above, taken at Oshkosh several years ago of an award winning Ryan PT-22, and probably the most beautiful aircraft I’ve ever seen (but you can see a bunch of beautiful aircraft at Oshkosh), is my inspiration.
I leave you with one aviation thought: Good landings mean nothing. Anyone can pull off a good landing, even after a horrible mess of a flight. But managing an aircraft to arrive, uneventfully, at a point where a safe landing can be made means everything. Don’t ever forget that.
Monday, February 16, 2015
The Slam Dunk
If you’ve done much flying into busier airports—and even
some not so busy but with defined arrival and departure procedures—you know all
about the dreaded “Slam Dunk.” The Slam
Dunk happens when you are held much higher close in to the airport than you’d
like to be, and then are finally given a descent to the altitude you wanted,
only now with an airport right underneath for a visual approach, or with the
localizer right in front of you and the glide slope underneath you. Why do they have to make this so hard?
The most common assumption is that it is for noise
abatement: trying to appease all those people on the ground who knew they were
buying a house next to a busy airport and then complained about all the
noise. So we get The Slam Dunk.
Noise abatement is a factor, but it isn’t a big one. The real reason is air traffic control. Let’s take a look at that.
Separating arrivals and departures at airports that aren’t
very busy isn’t hard. There seldom are
more than one or two aircraft in the local area and they are coming and going
in different directions, so separation can be as simple as assigning vectors to
keep them apart, maybe holding one at one altitude while the other climbs or
descends through it, or a speed adjustment—something simple that doesn’t affect
the descent profile substantially. A lot
of that is done at busy airports too, to get everyone in line and sequenced
properly. But it isn’t enough. Standard departure and arrival patterns have
to be created to organize and simply the controllers duties, and one of the
most important component of those procedures is to hold departures down to one
altitude until they have gotten some distance from the airport, and to keep
arrivals above that altitude until they’ve gotten to the point where they are
past the traffic departing. Once the
departure is out past the arrival, he is allowed to climb and the arrival
(finally) is allowed to descend. Otherwise you’d have traffic climbing and
descending right into each other. In order
to not hold the departure down any longer than necessary, they keep the arrivals
above the departures until that point where the arrival has just enough
airspace to get on down. That’s The Slam
Dunk.
Now you could say, “’Just enough’ according to whom?”
According to Airways Standards personnel who don’t have to actually fly them in
real world conditions? According to standards for turbine powered aircraft,
disregarding the concerns of recip pilots who don’t want to shock cool their
engines? Both good points, but the
situation isn’t so bad if: 1, You know The Slam Dunk is coming and you don’t
try to fight it but are ready for it; and 2, You know you have tools available
and are ready to use them, all of them, as necessary. So let’s go over that.
The first point is the easy one. There isn’t any point in requesting lower
over and over in this situation. Unless
you have an emergency, or are arriving late at night with only a few freight
dogs around, it just isn’t going to happen.
All you’re doing is wasting time that could be spent getting ready for
the descent when it does come. So that
leaves the tools. Let’ talk about engine
shock cooling. Mike Busch, who writes a
maintenance column for the EAA magazine “Sport Flying”, and who runs a business
managing maintenance for GA pilots, someone I respect very much, says there is
no hard evidence that rapid engine cooling damages engines, but plenty of
evidence that hot cylinder head temps does.
Of course, it’s still better to manage engine temps and not subject them
to rapid changes, but pulling an engine that has been coasting along at 50%
power or so back to idle is probably not going to do a lot of harm. So if that’s what it takes, that’s one tool.
But remember, you don’t have to come all the way back to
idle every time. A recip at idle creates
a lot of drag. At idle the propeller has
changed from pulling the aircraft to turning the engine, pumping a lot of air
and overcoming a lot of internal drag, while a turbine at idle is still
generating thrust. (For turbine aircraft, their ace in the hole is speed
brakes, and not being able to generate drag with the engines is why they have
them.) You can duplicate that by
bringing power back to whatever power setting equates to zero thrust. (Listen
for it—the sound changes as the engine starts to “back pedal”.) That’s a good
place to start and won’t shock cool the engine as much as coming all the way
back to idle does.
The other tools are pretty obvious: gear and flaps. Gear should probably go out first—it creates
a lot of drag and has to go down sooner or later—flaps next. Flaps don’t add much drag until you get down
to landing flaps, but you can start with the first notch of flaps once the
speed is below the flap extended limit.
So now you have power at zero thrust, gear down, approach flaps. In many cases that will be enough. If not, reduce the power to idle and when
slow enough go to full flaps. If you
know The Slam Dunk is coming and you start aggressively configuring drag the
second you get your descent clearance, it should work out just about right,
with a level off just before localizer intercept and underneath the glide
slope. Acting immediately and
aggressively, throwing everything at it if you have to—power to idle, full
flaps—is the key.
Once you understand that Slam Dunks are not some evil joke
that controllers like to pull on pilots just because they can, but are an
inevitable part of air traffic control at airports with more than local
traffic, you’re well on your way to dealing with them. And it feels pretty good when you know what to
do, are ready for it, and it all works out, sitting on the porch with the big
dogs, and looking pretty good doing it.
Monday, April 14, 2014
Professionalism and Non-Professional Pilots
What does professionalism have to do with general
aviation—with pilots who don’t fly for a living? A lot, I think, but first let’s
look at what we mean by “professionalism.”
The word “professionalism” gets thrown around to mean a lot
of different things. It’s one of those
words like “fairness” that means something different from one person to
another, and even to any one person depending on the circumstances. And that’s not necessarily a bad thing. One of the beauties and strengths of the
English language is its flexibility. But
it can lead to misunderstandings, and worse, to manipulation: when someone asks
you to “be fair”, they usually mean “Do it my way”.
Professionalism, in the literal sense, means to act
according to the customs, methods and ethics that have been established for
that profession. The connotation, if not
the actual sense, is always one of service first, profit second. Thus medicine, the law, accounting, are
considered to be professions. But we
often use the word in a broader sense. Commercial
pilots are often considered to be professionals, even if we think of their work
as more of a job than a profession. But
there certainly is a service first aspect to professional aviation and there
certainly are customs, methods and ethics related to it.
I often hear people use the work “professional” to mean
“objective” or “not emotional.” They say, “I put on my professional face.” “I
tried to act professionally, despite his unreasonableness.” “As a professional, I tried to give him a
balanced response, even though it was clear there was only one way to go.” And
so on. There’s nothing wrong with that,
as long as it is clear that that is the meaning intended. But it is more of a side effect than it is a description:
a person acting professionally will be objective and unemotional, but that’s
not all there is to being professional.
There is another characteristic of professionalism that I
think is very important, particularly for our discussion here. Professionals work with other
professionals. A surgeon doesn’t operate
alone, he or she operates in the company of other medical professionals. The lawyer’s arguments and briefs do not
exist in a vacuum, they are read and reviewed by other legal
professionals. The violinists doesn’t
play alone, he or she plays with other musicians. And they all know what they are seeing,
because they all do the same things themselves.
They can judge. A professional continuously
subjects his or her work to the opinions and observations and judgments of
other professionals, people whose judgments matter.
In a professional cockpit, there are always at least two
pilots, often more—jump seaters, check airmen, FAA inspectors. A professional
pilot doesn’t fly alone, he or she is always being observed by someone else
and, consciously or otherwise, being judged on his or her performance. Good performance is noted and admired and bad
performance is noted and remembered. A
professional pilot has a real incentive to do a good job and avoid mistakes:
both will be noted.
In turn, there are two different aspects to that
performance, one that I would call systemic and one that I would call
operational. The systemic is the overall
training and experience level of the pilot in question--his or her competence
in a general sense. Does this pilot seem
to be generally well trained and experienced and know what he or she is
doing? The operational is specific: How
good was that descent planning? How good an approach was that? How good a
crosswind landing was that?
Pilot hiring for professional positions is largely about
determining that the candidate first has the systemic training and experience
to do the job and fit in with other professionals, and second can perform at a
level that insures safety, efficiency, and comfort. The first part is done by verifying training
and experience claims and the later part with simulator rides. Backgrounds are checked and performance is
observed. As it will be every time that
pilots flies.
Where does this leave general aviation, those who fly as
single pilots (except for check rides, refreshers and review)? Their
performance is almost never observed by another pilot. He or she can operate the aircraft well,
badly, carefully or carelessly. Unless
there is a violation observed, a rarity, or an accident or incident, also rare,
no one knows.
Which brings up another important difference between the
professional and the non-professional pilot: for the single pilot, no else is
there to correct, critique and instruct.
Professional aviation is really an apprenticeship system: copilots learn
from captains, generally directly, but also indirectly, by observing the
captain’s performance, both good and bad.
The two pilots have each other to help each other, to learn from each
other and to correct each other. (And
copilots do correct captains, even if they have to be a bit diplomatic in doing
so: “Hey Boss, weren’t we cleared for the Back Course?”) So not only are observations
going on and judgments being made, instruction and correction are happening,
too. None of this happens in a single
pilot general aviation aircraft. No one’s fault, it just can’t happen.
So what can the non-professional do? The first thing to
recognize is that you can’t have too much training. The systemic part—the background and general competence
level comes mostly from training. A
little comes from experience, usually obtained the hard way, but training is
much more concentrated and effective. So
if all you’re doing is a biennial flight review, you’re not expanding your
systemic knowledge at all, or very, very, little. If you haven’t got an instrument rating,
start. Even if money is tight,
start. Every hour will help. Think about a new rating: seaplane, glider,
tail dragger, or start work on a commercial certificate. If you are instrument rated and fly mostly
one type of aircraft, take a ground school and simulator refresher course every
year. You don’t “learn to fly.” Flying is always a matter of continuing
education. If you aren’t getting regular training of some sort, you aren’t
getting any better as a pilot.
In the aircraft, imagine another pilot there, one with a lot
more experience, maybe even someone specific like the guy down the street who
flies for FedEx or the kid next door who went on to fly C-17s for the Air
Force. How much more careful would you be and how much better would you try to
fly if that person or someone like that were there in the airplane with you?
This isn’t play acting, this is discipline.
If you would want to make the best possible approach and landing for someone
who knows what you’re doing, why wouldn’t you want to do the same thing any
time, even alone?
Here’s one way to know you’re doing a really good job, even
if no one is there to observe and comment who is qualified to make that
call. If no one says anything at the end
of the flight except maybe, “Thanks, I enjoyed that,” that’s a good sign. When you do a really good job, it seems
ordinary, even boring. People are hard pressed to know what to say. When you do a lousy job, they may not know
what went wrong, but they’ll have a lot to ask and say. A really well planned and well executed
flight is boring: you take off, climb to altitude, cruise along for a while,
descend and land. No big deal. What’s
there to say?
So, train often, plan every flight thoroughly, assume an
experienced professional pilot is riding along with you, and treat yourself to
a little, knowing smile when you walk away from the airplane and no one says
anything. You earned it. Captain.
Wednesday, February 27, 2013
Weather Matters
I got a request the other day from someone who wanted to use
one of my articles in his online aviation course on computer flight planning. His
business is called www.PilotWeatherTraining.com, and I checked it out and it got me thinking
about weather. I haven’t tackled
aviation weather since I was writing full time back in the mid 80’s, and with
another 10,000 hours of so of experience since then, I thought it might be time to think about it
again. Specifically, what kind of weather matters, and what doesn’t?
First, what do we mean by the word “weather”? Weather is
atmospheric conditions. A severe clear day with no wind is still weather. But in aviation, when we talk about
“weather”, we mean the stuff that can adversely affect our flight. If the skies were never any worse than
scattered clouds, visibility greater than 10 miles and winds under 10 miles per
hour, we really wouldn’t ever need to worry much about the weather—it’s always
a “go”. But that’s not the case, not even in the relatively dry southwestern
states (US), so weather is something we have to take into account.
For the VFR only pilot, “weather” is not so much a question of avoiding the stuff that can really hurt you as it is having adequate visibility to navigate and avoid terrain and obstacles. Of course the VFR pilot wants to avoid freezing rain and thunderstorms and heavy turbulence, but that should largely take care of itself if he or she has adequate visibility in the first place. So what is “adequate”? “It depends” is always a safe answer but doesn’t get us very far. The normal VFR visibility minimums of 3 miles might be adequate, or it might not be. The VFR only pilot flying a Champ at 80 mph on a very hazy summer day on a very short trip over terrain he or she is totally familiar with can probably call 3 miles visibility adequate. Another pilot flying a Piper Arrow or a Cessna 182 on a longer trip over unfamiliar terrain would be asking for trouble in those conditions. So visibility depends a lot on speed and familiarity with the terrain.
For the VFR only pilot, “weather” is not so much a question of avoiding the stuff that can really hurt you as it is having adequate visibility to navigate and avoid terrain and obstacles. Of course the VFR pilot wants to avoid freezing rain and thunderstorms and heavy turbulence, but that should largely take care of itself if he or she has adequate visibility in the first place. So what is “adequate”? “It depends” is always a safe answer but doesn’t get us very far. The normal VFR visibility minimums of 3 miles might be adequate, or it might not be. The VFR only pilot flying a Champ at 80 mph on a very hazy summer day on a very short trip over terrain he or she is totally familiar with can probably call 3 miles visibility adequate. Another pilot flying a Piper Arrow or a Cessna 182 on a longer trip over unfamiliar terrain would be asking for trouble in those conditions. So visibility depends a lot on speed and familiarity with the terrain.
What about clouds? VFR minimums say you must be at least
500 feet under any clouds, 2000 feet away from any clouds, and at least 1000
above any cloud. It’s okay to fly
between them and it’s okay to fly over them as long as you stay that far away
from them. (This is to provide some
reaction time in case an aircraft, one presumably operating under Instrument
Flight Rules, comes popping out of one of those clouds.) So I guess that means
that as long as we are willing to stay under the clouds, we could fly even with
overcast skies. And for short trips that
probably is okay. The problem with
overcast skies is that the ceiling almost always gets lower as you approach the
system that is causing the overcast. If
you are flying away from that system, toward higher ceilings and eventually
broken, then scattered clouds, fine.
Otherwise, you better not be going far because you’re going to find
yourself having to go lower and lower to stay under the overcast, and down that
road lies trouble.
The real problem with VFR only flying is its intended purpose: If you intend to fly VFR for transportation you are going to run into problems; if you intend to fly VFR for pleasure, you are probably going to have a ball. (See numerous previous posts on “Oshkosh”—Air Adventure—to get an idea of how much fun flying for fun can be.) And the reason is quite simple, even if it is still quite hard to accept: flying for transportation, that is, flying at a given time to a specific place over a given distance and course, requires tools to deal with the realities of weather, and VFR only flying doesn’t have those tools.
The only way to consistently and reliably fly for transportation is under Instrument Flight Rules with an appropriately equipped aircraft and by a suitably qualified and current instrument rated pilot. That takes care of the visibility limitations of VFR only flying, and it takes the risk out of flying on top of broken clouds or overcast skies, but now the problem of avoiding hazardous weather doesn’t take care of itself. So what are those hazards, and what can we do to avoid them?
I like to think of hazardous weather as any weather I don’t ever want to encounter in any aircraft. The L-1011 was a fabulous aircraft, I think the best air transport ever made. (Certainly newer aircraft have better systems and are more efficient, but manufacturers have discovered that aircraft don’t have to be the best that can be made, just good enough.) As good as it was, I still wouldn’t want to take it into thunderstorms, or severe turbulence, nor would I want to take it through heavy icing, hail, or freezing rain on takeoff, approach or landing. There are limits to the stresses any aircraft can take, and there are limits to the amount of ice it can carry and damage it can sustain. General aviation aircraft are normally certified to greater G limits than transport category aircraft, but I still wouldn’t want to take any aircraft into a thunderstorm or heavy turbulence. (That includes an F-16 stressed to plus 10 G’s, not that I’m going to get a chance to try.)
The L-1011 had every kind of anti-icing equipment imaginable, of course, and it also had something else—it could climb rapidly through the lower altitudes where serious icing is normally found up to the flight levels where the temps are so cold that icing is seldom found. Anti icing for turbofan aircraft is mostly a matter of keeping the engine cowling clear and the pitot/static system heated. General aviation aircraft are different, not just because they spend a lot of time at altitudes where icing occurs, but because it affects them differently. It is fairly easy to protect a propeller driven, reciprocating engine from ice: you need “hot “ props and an alternate air source. But keeping the aerodynamic surfaces clean—the wing, the tail, the rudder—that is a different matter. In some 12000 hours of flying jets, I can count on one hand the number of times I had to use wing deicing. In some 2000 hours flying general aviation aircraft, I can’t count the number of times I had to use wing deice—“the boots”—and I do remember many times when they didn’t work very well. Approval for flight in known icing is great, but only to get you out of it if you happen to fly into it. General aviation aircraft should avoid any icing conditions and, if encountered anyway, get out of them as soon as they can.
The real problem with VFR only flying is its intended purpose: If you intend to fly VFR for transportation you are going to run into problems; if you intend to fly VFR for pleasure, you are probably going to have a ball. (See numerous previous posts on “Oshkosh”—Air Adventure—to get an idea of how much fun flying for fun can be.) And the reason is quite simple, even if it is still quite hard to accept: flying for transportation, that is, flying at a given time to a specific place over a given distance and course, requires tools to deal with the realities of weather, and VFR only flying doesn’t have those tools.
The only way to consistently and reliably fly for transportation is under Instrument Flight Rules with an appropriately equipped aircraft and by a suitably qualified and current instrument rated pilot. That takes care of the visibility limitations of VFR only flying, and it takes the risk out of flying on top of broken clouds or overcast skies, but now the problem of avoiding hazardous weather doesn’t take care of itself. So what are those hazards, and what can we do to avoid them?
I like to think of hazardous weather as any weather I don’t ever want to encounter in any aircraft. The L-1011 was a fabulous aircraft, I think the best air transport ever made. (Certainly newer aircraft have better systems and are more efficient, but manufacturers have discovered that aircraft don’t have to be the best that can be made, just good enough.) As good as it was, I still wouldn’t want to take it into thunderstorms, or severe turbulence, nor would I want to take it through heavy icing, hail, or freezing rain on takeoff, approach or landing. There are limits to the stresses any aircraft can take, and there are limits to the amount of ice it can carry and damage it can sustain. General aviation aircraft are normally certified to greater G limits than transport category aircraft, but I still wouldn’t want to take any aircraft into a thunderstorm or heavy turbulence. (That includes an F-16 stressed to plus 10 G’s, not that I’m going to get a chance to try.)
The L-1011 had every kind of anti-icing equipment imaginable, of course, and it also had something else—it could climb rapidly through the lower altitudes where serious icing is normally found up to the flight levels where the temps are so cold that icing is seldom found. Anti icing for turbofan aircraft is mostly a matter of keeping the engine cowling clear and the pitot/static system heated. General aviation aircraft are different, not just because they spend a lot of time at altitudes where icing occurs, but because it affects them differently. It is fairly easy to protect a propeller driven, reciprocating engine from ice: you need “hot “ props and an alternate air source. But keeping the aerodynamic surfaces clean—the wing, the tail, the rudder—that is a different matter. In some 12000 hours of flying jets, I can count on one hand the number of times I had to use wing deicing. In some 2000 hours flying general aviation aircraft, I can’t count the number of times I had to use wing deice—“the boots”—and I do remember many times when they didn’t work very well. Approval for flight in known icing is great, but only to get you out of it if you happen to fly into it. General aviation aircraft should avoid any icing conditions and, if encountered anyway, get out of them as soon as they can.
The L-1011 also had an incredible radar, with a bunch of
power and a great big antenna up in the nose, and I learned from experience to
trust it and to rely on it: If it showed
a red area inside a cloud, you could bet your 401(k) that that cloud was a
thunderstorm. If it showed mostly green
areas of precip with a few smaller areas of yellow (heavier rain), you could
feel safe entering, avoiding the yellow areas. Radar in general aviation
aircraft aren't nearly as powerful or as sensitive and can’t be relied on for
weather penetration. They should be used
to avoid areas that might contain thunderstorms. The same goes for ground based weather radar
relayed to cockpit displays. They paint
a good picture, better than most aircraft radar pictures, but they are
refreshed much less often than aircraft radar, so they aren’t real time. The two should be used to together, if you
have both, to stay completely away from any weather that might contain
thunderstorms. Remember, you don’t ever want to fly in a thunderstorm in any
aircraft. One time is one too many.
One final note on avoiding thunderstorms from an “old guy”
who has been there a lot: the best way to avoid thunderstorms is to flight plan
away from them. I don’t care how far out of the way you have to fly, do whatever
you have to do to avoid any chance of having to deal with them. And I don’t care if it means you probably
shouldn’t fly at all that day. No airplane can fly anytime under any
conditions. The less weather capability
you have, the more often you will come upon those days, and the further out of
the way you will have to fly on days you can, but so what? There is no trip so
important that taking a chance on hazardous weather justifies it. And please don’t be tempted to try a
“look-see” under VFR. That leads to
nothing but trouble, like when you turn around and the weather has closed in
behind you as well. Just stay away from
thunderstorms.
You want to stay completely away from freezing rain and hail
in flight, but they are not the same kind of hazard. Hail comes out of thunderstorms, and you
shouldn’t be anywhere near them. We went
over that. Freezing rain happens when
rain falls into colder, freezing temperatures.
At the first hint of freezing rain, climb if you can. You usually only have to go up a couple of
thousand feet to climb into warmer air with rain. If you can’t do that, turn around. Going lower
almost never works, and trying it exposes you that much longer to what can
quickly coat the aircraft and add hundreds of pounds of additional weight. It isn’t worth the gamble. Go back.
That leaves turbulence not associated with thunderstorms,
and it really doesn’t matter what kind of turbulence it is—mountain wave,
convective, jet steam, clear air—if the forecast or reported turbulence is
severe or extreme, don’t go there. If it
is moderate, you may not want to go there—the ride will be awful and aircraft
control will be a tiring, constant battle, but it won’t hurt you. Unless it gets worse. Turbulence of any sort is best avoided, but
it’s the severe stuff that will hurt you. Again, the best way to avoid
turbulence is in the preflight planning, and the only way to find out about it
is with a complete weather briefing.
Actually, I tried to summarize all of these elements of safe
cross country flying back when I was writing full time, first in my book Fly Like a Pro and later in Improve Your Flying Skills. The result
was a mnemonic (like GUMP, for the prelanding check). My mnemonic for preflight planning was
BILAHs, pronounced “bylaws”. That may
have been a long time ago, but the basics never change. Here’s how it works:
- The B is for briefing, meaning weather briefing. Always get a complete weather briefing for every flight outside the local area.
·
The I is for IFR. Always file IFR, if you can, and if you
can’t, either accept that your flying is going to be mostly local, or start
working on it. The reason to file IFR
every time is that that is the only way to stay current and be comfortable with
the ATC system. If you aren’t
comfortable filing IFR on a good day, how comfortable are you going to feel on
a lousy day when you have to?
·
The F is for flight log. Always make a flight log with legs, times,
fuel estimates and keep it current enroute.
It is the only way to see trouble coming.
·
The A is for alternate: always have one,
required or not, and make it a good one.
A solid gold alternate with the fuel to get there is the best “out” in
aviation. (See January 2010 post, “The Other Part of Flight Planning” for more
on this.)
·
The H is for hazardous weather. Stay away from it. That’s what this post is all about.
If you follow these simple BILAHs of cross country flying,
you will eliminate 90% of the problems general aviation pilots get into.
Commercial pilots don’t have any choice, they have to fly this way. You have a choice, but do it anyway. It’s a little more work, but in the long run
it’s a lot more fun and sure beats scaring yourself to death.
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