Witnesses observed the airplane enter what the NTSB labeled an "incipient spin
" before it crashed.
Many accidents classified in the "stall/spin" category involve stall events in which the ball is not centered--which results in an aggressive roll and pitch down that may be an incipient spin
or a spiral.
A stall and incipient spin
are unlikely to have that groundspeed.
The AAIB concluded: "The aircraft stalled and entered an incipient spin
, probably following a partial loss of engine power - the cause of which could not be determined."
I had him recover using the standard NATOPS "idle/neutral" recovery during the incipient spin
. My student pushed the stick slightly forward of neutral, which caused us to recover quickly, with less than 1 G flight.
"It massively increases the message that the back end of the car is moving," says Harty, "to the extent that--if you let go of the steering wheel--the back of the car will very elegantly steer itself out of an incipient spin
Then, just before it went out of sight under the leading edge of the wing, I saw it flick over to port in what looked like an incipient spin
. And eventually I saw it disappear into the English Channel.
The result is too common: Without much warning, the airplane entered a cross-controlled stall and an incipient spin
. At maybe 400 feet agl, there wasn't enough air underneath the Centurion to recover.
This includes losing altitude, especially if an incipient spin
The lifting wing pushes the airplane rapidly and dramatically into a snap roll or an incipient spin
. Multi-engine pilots learn all about the "critical engine" when discussing engine failures and single-engine performance.
The falling leaf maneuver starts with a power-off stall in level flight and initiating an incipient spin
by holding back pressure and applying full rudder in one direction.
At 500 feet AGL, he's looking at an incipient spin
if he holds the rudder in, or perhaps a split-S into the ground if he releases the rudder.