Flight Instructors Training Procedures _revised AIC_x

1. AIM
AEROBATICS
HALF ROLL TO INVERTED FLIGHT AND RECOVERY
This manoeuvre involves the aeroplane being placed in an inverted straight and level flight position by
means of a half-roll and eventually recovered to the up-right position by either another half-roll, thereby
maintaining a constant altitude and heading, or recovery to straight and level flight at a lower altitude
and 180° heading change.
2. PRE-FLIGHT BRIEFING
i. Refer to information provided in aerobatic exercises on the Slow Roll and Loop.
ii. Refer to aeroplane manual for inverted flight engine and airframe limitations.
iii. Reverse loadings will cause the engine to cut during inverted flight unless special provision is
made to prevent this. If no special provision has been made for inverted flight, the throttle
should be closed and opened again when positive loading have been regained.
iv. Unless the engine oil system is modified for inverted flight, there may be a drop in oil pressure
with possible propeller overspeed (with constant speed unit) as well as the danger of oil
drainage occurring should the engine time limit for inverted flight, be exceeded.
v. Depending upon the aeroplane type, there is the possibility that adverse aileron yaw may be
greater during inverted flight due to differential aileron movement increase instead of
decreasing drag.
vi. The student must be thoroughly briefed on what to expect in inverted flight and the
duration of inverted flight should be progressively increased as the student adapts to it.
3. DESCRIPTION OF AIR EXERCISE
a. APPLICABLE PROCEDURES AND CHECKLISTS
b. AEROPLANE HANDLING TECHNIQUES:-
DEMONSTRATION OBSERVATION
1. HALF ROLL TO INVERTED FLIGHT i. Lookout.
ii. Complete aerobatic checks – HASELL.
iii. Carry out the same procedures and flying
technique as applicable for entry to Slow Roll
up to the inverted position – check wings level
when inverted.
iv. Move control column to forward position when
inverted.
v. Note nose position in inverted flight to maintain
altitude.
vi. Observe engine oil system limitations.
vii. Observer engine fuel system limitations –
throttle back if inverted system is not installed.
viii. Keep straight on line feature.
ix. Carry out gently turns to left and right,
observing effect of adverse aileron yaw (use of
rudder).
Note – if engine is throttled back, turns will be
done in inverted glide at speeds higher than
that for normal glide.
x. Minimum height for aeroplane to be at an even
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