PPRuNe Forums - View Single Post - Deliberately forced wing drop stalling in GFPT test
Old 12th Jul 2011, 16:26
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swh

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Presumably `advanced stalling` means stalling in a steep turn.
Normally power on stalls in the departure and arrival configurations as well as steep turns.

Notwithstanding, the GFPT test requires recovery from a wing drop. However, to get these types to drop a wing requires deliberate gross mis-handling to attitudes never envisaged by the manufacturer of a non-aerobatic design.
Normally easy enough to develop a wing drop in the approach configuration simulating a turn onto final when low on profile with a little bit of power and approach flap without the use of any rudder.

Modern training aircraft have benign stalling characteristics and there are stringent rules on the amount of wing drop permitted in the certification process. These aircraft include the Cessna and Piper singles of a previous era.
I would not agree with that, the rate of stall/spin accidents below 1000 ft has not really changed significantly in the last 50 years. Still responsible for a lot of accidents, and unfortunately deaths as well.

"The Piper PA-38 Tomahawk, designed specifically for flight instruction, including easier demonstration of spins, was involved in 50 stall/spin accidents from 1982 through 1990, for a rate of 3.28 per 100 aircraft in the fleet. During the same period, the Cessna 150/152 had 259 stall/spin accidents, for a rate of 1.31 per 100 aircraft, and the Beech 77 suffered only four such accidents, for a rate of 1.64 per 100 aircraft."

http://www.aopa.org/asf/publications...stall_spin.pdf

Stalling is not an aerobatic manoeuvre and the authors of the CASA Flight Instructor Manual, were living in the past when they mandated practice stalling as an aerobatic manoeuvre.
The practice of the approach to the stall, and stall recovery does involves abrupt changes in its attitude, abnormal attitudes, or an abnormal variation in speed, when practicing the manoeuvres, that is intentional outcome.

It is under CAR 1988 2, "acrobatic flight" means manoeuvres intentionally performed by an aircraft involving an abrupt change in its attitude, an abnormal attitude, or an abnormal variation in speed. The FIM has the correct definition.

This definition is basically universal, the FAA have something very similar.
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