Sudden silence:
When the engine quits on takeoff
|
Experiencing an engine failure right after takeoff leaves you with little
time, little altitude, and a lot of decisions to make—fast! On September 17, 2005,
the pilot of a Piper Malibu had to make a quick decision when the Malibu's
engine failed shortly after takeoff from Runway 17R at Houston's Ellington
Field. The pilot and his passenger were killed in the accident.
Shortly after the airplane took off, the tower controller heard a weak radio
call, which included the words "engine" and "power." The
controller asked the pilot to repeat his call, and he responded, "I'm
going down."
Witnesses saw the Malibu take off and climb to about 300 feet with no problems.
At 300 feet, the engine began to sputter, then went quiet. The flight continued
straight ahead at a consistent altitude for about 10 seconds before it entered
a level left turn, followed by a steep descent. The Malibu hit the ground in a
left turn and cart wheeled about 125 feet. The landing gear and wing spoilers
were both in the retracted position.
The private pilot had about 640 hours, 330 of which were in the Piper
Malibu.
The NTSB determined the probable cause of this accident was the pilot's improper
in flight decision to maneuver back to the departure airport following a loss
of engine power.
Remember basic aerodynamics? When an airplane is turned, the vertical
component of lift is reduced, and overall lift is lost. Therefore, if a turn is
initiated and there is a lack of excess thrust (or in this case, no thrust
because the engine has failed), the plane will descend. At 300 feet agl,
you have no room for error.
According to the FAA's Airplane Flying Handbook, "If an actual
engine failure should occur immediately after takeoff and before a safe
maneuvering altitude is attained, it is usually inadvisable to attempt to turn
back to the field from where the takeoff was made. Instead, it is safer to
immediately establish the proper glide attitude, and select a field directly
ahead of or slightly to either side of the takeoff path." The tricky part
is defining "safe maneuvering altitude." Most pilots would say the
minimum would be 500 feet agl, just about the altitude where the turn to
crosswind is started.
How much altitude do you think you would need to make the runway safely?
The best way to answer that question is to try the maneuver. Now, nobody is
suggesting simulating an engine failure right after takeoff—close to the
ground. However, there is a way. First, find your local instructor and go out
to the practice area. Climb to a safe altitude (at least 3,000 feet agl) and
set that altitude as a hard deck. Establish yourself in a takeoff
configuration, have your instructor simulate an engine failure at different
altitudes above your hard deck—200, 500 and 1,000 feet would work well. Once
your engine has "failed" practice making the turn back to the
"runway". See how much altitude is truly needed to complete the turn safely
before reaching your hard deck.
For more information about maneuvering flight and its hazards, see the AOPA
Air Safety Foundation's Safety Advisor, Maneuvering Flight,
as well as the foundation's Special
Report on Stalls and Spins, available online.