ELEVATOR TRIM STALL
Description
A stall resulting from application of full power during a
go-around when positive control of the airplane is not maintained.
Objective
To demonstrate recovery procedures for overcoming strong
trim forces and how to maintain control of the airplane by using proper and
timely trim techniques.
Setup
·
Clear the area
·
Choose forced landing area
·
Configure aircraft for final approach for landing: CCGUMPS,
approach power (C172RG: 15” Hg, 2700 RPM), full flaps
down, gear extended, carburetor heat on, altitude so recovery is ≥1500’
AGL
·
Select outside references
·
Reduce power to idle
·
Maintain altitude until normal glide speed is reached (C172RG: 65 KIAS)
·
Trim nose up (full up for best effect) to simulate
landing approach to maintain final approach speed
·
Apply full power to simulate a go-around
o
The combined forces of power, engine torque, back elevator trim
will make the nose pitch up sharply with a left-turning tendency; as the pitch
attitude increases to a point well above normal climb attitude, the potential
for a stall exists
Recovery
·
Immediately apply positive forward elevator pressure to
lower nose and return to normal climbing attitude
·
Trim to relieve excessive control pressure
·
Continue normal go-around procedures and level off at the
desired altitude
·
Maintain ball centered
·
Look for traffic
It is imperative that a stall not occur during an actual
go-around as there may not be sufficient altitude to recover.
References
FAA-H-8083-3A Airplane Flying Handbook p. 4-11
JS314510-001 Jeppesen Guided Flight Discovery Private Pilot
Maneuvers p. 5-13