| This is the second in a series of articles
designed to provide general aviation pilots with a safe and
practical approach to weather. The article is based upon an
analysis of recent weather-related accidents and is promoted by
the FAA Flight Standards Service’s Safety Program, in
coordination with the General Aviation Joint Steering Committee,
which is comprised of government, industry, and aviation user
organizations. This effort is focused on reducing general
aviation fatal accidents. Inexperienced pilots losing control of their aircraft in
instrument meteorological conditions (IMC) still cause far too
many accidents. While most pilots can tell a personal
“and-there-I-was” story or two about being in the clouds, it’s
clear that pilots with the proper training and proficiency are
far less likely to get themselves in a dangerous situation and,
should they find themselves in such a situation, are more able
to safely get themselves out of it. This article describes a few
incidents where pilots quickly realized that they were in
trouble, and several accidents that can provide important
lessons to others. In all cases, better
pilot training and proficiency might have prevented the problem
or prevented it from worsening.
In the last FAA Aviation News article about weather accidents
[see November/ December 2004], the discussion revolved around
accidents involving hitting terrain during a weather encounter
in which pilots maintained control. These are better known as
Controlled Flight into Terrain (CFIT) accidents. This article
discusses the other situation in which pilots lost control.
When we think of a pilot blundering into weather, we think of a
lowtime VFR pilot who inadvertently enters instrument
meteorological conditions (IMC). Unfortunately, there are plenty
of these cases in the accident files. But not all of these
encounters end in accidents. Sometimes a pilot can be fortunate
enough to recover and find better weather. Here are a couple of
examples of inflight weather encounters from the Aviation Safety
Reporting System (ASRS).
More reports can be found at <http://asrs.arc.nasa.gov/>. Select
either Flash Version, the Non-Flash Version, or Get the Flash.
Select “ASRS Database Report Sets.” Under Report Sets Title,
select “Inflight Weather Encounters.
“I lost sight of the ground.”
I got a [weather] briefing...and departed in clear skies with
unrestricted visibility.... I got within 10 miles of
[destination airport] when things got worse and began to happen
fast. I lost sight of the ground and descended to 1,000 feet MSL.
I saw trees and antennas and decided to climb into the clouds
and reverse direction. I got very disoriented and began losing
control of the plane. I called approach control and asked for
help. They vectored me back to VFR conditions. They did a great
job keeping me calm, on course, and in level flight. They
vectored me to an airport where I found a hole in the fog and
landed safely. I was very shook up at what had happened because
of my poor decision not to turn back sooner. I felt like I was
within seconds of losing
my life.... I’ve heard and read stories of what can happen and
how fast. To experience it was a valuable lesson....
“I am in the clouds and need help.”
Conditions were getting worse by the minute...There were
scattered thunderstorms throughout the area. This prompted me to
hurry my preflight and departure. I was also trying to get to a
meeting scheduled for later that afternoon.... I thought that if
I could get about one mile from the end
of the runway, I could make the determination of whether or not
I would be able to make the flight home. If conditions were not
favorable to continue, I
would do a 90/270-degree turn back and land. Immediately after
takeoff (1/2 mile and 300 feet), I was in the clouds. This was
not what I had planned and fear and panic set in. Next came
spatial disorientation. Unknowingly, I put the plane in a hard
bank to the left and a very steep climb. Nothing was making
sense to me and the next thing I remember was seeing...the VSI
pegged off scale (greater than 2,000 foot per minute descent). I
broke through the clouds
long enough to see the ground coming up, which is a view I had
never seen before and hope never to see again.... I thought of
how stupid I was to get into this mess.... I pulled up hard. I
remember doing this several times in the next few minutes of
trying to stabilize the aircraft. The oscillations became less
severe as I regained control of the aircraft.... My mind was not
able to digest the tremendous amount of data it was receiving
and I was trying to hang on by
a thread.... My first [radio] transmission was, “[Approach] this
is XXX and I am in trouble. I am in the clouds and need help. I
need a vector to get out.”
[Approach] responded by giving me a squawk code and then a
heading and altitude.... I was able to climb, but my heading was
all over the place. [Approach] then said that I should be out of
the clouds in about three or four miles. About 20 seconds later,
I saw an opening to go down through the
clouds and I took it.
As I look back, it was incredible how fast things went bad....
Why did I ever take off with conditions as bad as they were and
getting worse? Why didn’t I listen to any of the people I had
talked with prior to takeoff that recommended not going? I truly
believe in safety first, yet everything I did showed just the
opposite.... I have learned a great deal from this event and I
hope that those who choose to listen might learn from my
story....
These accounts are very real. They’re also gut wrenching and
very different from the lessons we all remember in primary
flight training in which the instructor said, “Okay, let’s put
the hood on and practice some simulated instrument flying.”
Things weren’t nearly this hairy and frightening.
So, an instrument rating should fix all of this. Right?
Well…maybe. It should greatly reduce a pilot’s risk of losing
control of an aircraft in IMC...and it does. Clearly, the
knowledge and practical skills that are learned would make
anyone a safer pilot. But there’s a catch. It’s called
proficiency and experience.
Pilots have to practice instrument flying to stay proficient,
and simulated instrument time under the hood is valuable, but
it’s not a substitute for the real thing.
In one accident, a recently IFR rated pilot and owner of a new
Mooney lost control of the aircraft shortly after departure from
Savannah, Georgia, when returning home to Pennsylvania. The
pilot’s logbook showed proficiency flights to maintain the
required IFR currency; some of these flights were even with
instructor pilots. There was limited actual IMC time logged,
however.
On the day of the accident, the pilot received a briefing from
the Macon AFSS prior to departure. Upon departing Savannah,
control of the aircraft was switched to Beaufort and the pilot
was on an assigned heading and altitude to intercept the
on-course airway. Although the flight was in solid IMC, there
was no ice or convective activity that would have made control
of the aircraft difficult. This was probably one of the pilot’s
first solid IMC flights. He had acquired his instrument rating
seven months prior to this accident.
The aircraft was on an assigned heading of 050, and in less than
two minutes, the aircraft made a left turn to 010 degrees and
then an immediate
right turn to 230 degrees and descended at a high rate of speed.
The pilot and his wife were killed.
We can also look at a case of a pilot who had difficulty
controlling the aircraft to maintain course and altitude while
on an instrument landing system
(ILS) approach.
The pilot was flying an A-36 Bonanza from Columbia, South
Carolina, to Atlantic City, New Jersey (ACY) and received fatal
injuries when the aircraft
struck terrain short of the runway. A review of Air Traffic
Control (ATC) information revealed that the pilot attempted two
ILS Approaches to Runway
13 at ACY. During the first approach, the controller made
numerous attempts to assist the pilot in intercepting the
localizer, by issuing vectors, and instructing him twice to
climb, when he was below the glideslope. The controller also
made numerous repeated transmissions to obtain pilot
acknowledgment of navigational assistance instructions. At 1601,
the controller stated, “November six papa romeo climb and
maintain one thousand six hundred climb and maintain one
thousand six hundred I show you about a mile from the outer
marker you should cross the outer marker at one thousand six
hundred.” The pilot acknowledged the instructions; however,
radar data indicated the airplane passed the outer marker at an
altitude of 1,000 feet. At 1602, the controller asked the pilot
if he had plenty of fuel on board and if he would like a
surveillance approach to Runway 13. After vectoring the pilot
back to the final approach course, the controller again asked
the pilot if he would like a surveillance approach or if he
would like to try the ILS approach again. The pilot responded,
“Let’s try the ILS ‘cause I’m set up pretty much ready to go on
it.” The controller stated, “Okay, if you need the surveillance
at all we’re all set up and ready for it, ah, you can expect
vectors for the ILS to Runway one three.” For the following four
minutes, the controller provided vectors to the pilot to join
the ILS and made repeated attempts to assist the pilot in
establishing the airplane on course. During the intercept, the
pilot passed
through the localizer and continued on an eastbound heading. The
controller then elected to initiate a surveillance approach by
providing vectors and instructed the pilot to contact the final
approach controller. Four transmissions were necessary for the
pilot to read back the correct final approach
control frequency. The pilot contacted the final approach
controller and received a step-down altitude and a heading. More
instructions were given
for the pilot to correct his heading. The controller cleared the
pilot to land on Runway 13 and instructed the pilot to report
when he had the runway in
sight. The pilot responded, “… roger.” This was the last
transmission.
Interviews with family members
and friends of the pilot, revealed he had
received his instrument rating through a
week-long school, within the past year,
and had “not accumulated much instrument
flight time” since then. This brings up the question, “How
do you safely acquire instrument experience?”
One way is to fly in actual
instrument conditions with an instructor
or a proficient instrument pilot.
In his book Weather Flying [The
McGraw-Hill Companies, 1998], Captain
Robert Buck provides an excellent
syllabus for a new instrument pilot to
follow. Experienced pilots can use this
for a guide to maintaining proficiency
as well. Below are excerpts. Teaching Yourself to Fly
Weather “Each day, in our advancing times,
the complexities of air traffic control,
routes, and communications grow, so
that all the experience we can get in
this area is important. If, on each
flight, VFR or IFR, we are on a flight
plan, doing all the work required, we
will become facile with this part of the
job and do it smoothly, almost automatically.
Once this has become an
easy task, we will have time to think
about the weather. [We can sneak up on flying actual
weather by] flying a little at first, more
as we gain experience. Following is a step-by-step
method. These steps are guides and
one’s own judgment will vary them as
one appraises his or her growing ability
and degree of comfort in different
stages of weather. The idea is to fly weather with
safeguards that relate to our experience.
After we’ve flown the first step’s
conditions enough to feel comfortable,
we can take on a little more as in step
two, and so on. The steps are: 1. Fly good weather to good
weather on top.
2. Bad to good. Step two is simply a continuation
of the first step. When starting these first steps, it’s best to
take off after a cold front has passed. Then there shouldn’t be
any more fronts for quite a long distance.
There are special situations, like the Los
Angeles basin, that are excellent for bad-to-good flight
experience. The frequent low stratus allows for an instrument
departure and a climb to on top, where it’s [clear], and then a
flight to someplace on the desert like Palmdale where the
weather is good. 3. Good to bad.
4. Bad en route.
5. Thunderstorms. Looking back over
these steps, we can see that weather flying experience isn’t
gained quickly. We need several seasons, years, to see the
things we should see and experience. We must face the facts of
weather flying. It cannot be gotten by injection, it cannot be
gotten by reading a book, and it cannot be gotten quickly. We
must remain humble for a long time and know when to quit or when
not to go. An instrument rating is a beginning, not an
endorsement that one can fly off in any weather.”
Captain Buck goes on to describe each step in
detail. It’s well worth reading. You can also use this as a
guide and develop your own proficiency plan in conjunction with
your flight instructor, who knows your capabilities and those of
your aircraft. In recent
discussions, Captain Buck wanted to reiterate some basics to
readers. He said “We must emphasize the importance of doing one
thing at a time. When a pilot gets into trouble, the first thing
needed is to get the airplane under control and keep it under
control; then handle the weather. Regarding weather, I don’t
believe we are getting in a pilot’s mind what weather can do,
that it is rarely static, but either improving or deteriorating.
Pilots tend to look at weather reports, ceiling, etc., and,
thinking the ceiling is high enough, charge out there VFR—never
really realizing the chances for conditions to deteriorate— or
get better, and what to watch for to see which way the weather
is going. There are subtle things, such as realizing that a scud
runner can suddenly be faced with near zero ceiling simply
because the airplane approached even a small hill that lifted
the air and orographically created low clouds that hugged the
hill.” If we look back at recent
accident statistics (since 1996), 116 instrument- rated pilots
lost control of the aircraft in weather while on an IFR flight.
Seventy-seven (77) of these pilots were operating in what should
have been benign IMC conditions, in other words, no ice, severe
turbulence or other factors that would have precluded an IFR
pilot from maintaining safe aircraft control. In addition, 54
pilots lost control of the aircraft due only to light
conditions, not weather. If we look
at loss of control accidents due to weather on other than IFR
flight plans, there are another 218 fatal accidents since 1996.
Seventy (70) of these pilots held instrument ratings. The high
number of loss-of-control accidents, even when the pilot is IFR
rated, might initially seem surprising.
Why would an instrument rated pilot not be
able to maintain control of the aircraft and reverse course
while on a flight that is supposed to remain clear of all clouds
in the first place? The illusionary effects happen quickly with
the pilot’s senses giving one indication while the aircraft
instruments show something very different. When the
inexperienced, low-proficiency or non-current pilot is suddenly
immersed in a challenging environment, coupled with the daunting
reality that their lives and their passengers’ lives are at
risk, mistakes can compound quickly. The bottom line is that all
pilots should recognize that it can be challenging to fly in the
clouds and that even if they are IFR-rated, they might not be
fully prepared to fly safely. Also,
during an inadvertent IMC encounter, the instrument rated pilot
now has to do something that no instrument training or previous
experience prepared them to do…and that is to work their way out
of clouds while the location of nearby terrain is uncertain and
airspace and cloud clearance requirements are an issue. We’ll
never really know the details of VFR into IMC accidents, because
these accidents usually occur to general aviation aircraft
without cockpit voice recorders or flight data recorders. Most
blunders into IMC that end successfully probably are not
reported.
Michael Lenz is a Program Analyst
in Flight Standards Service’s General
Aviation and Commercial Division. |