Flight Instructors Training Procedures _revised AIC_x

1. AIM
AEROBATICS
HORIZONTAL FIGURE OF EIGHT (CUBAN EIGHT)
In this manoeuvre the aeroplane is flown around the first five-eights of a loop, but at the
commencement of the inverted 45° down line after the five-eights loop, the aeroplane is rolled from the
inverted to the upright position in order to finish in a 45° dive in the opposite direction to that at which
the loop was entered, before entering a second loop and repeating the rolling manoeuvre on the 45°
down line after the second five-eights loop, thereby completing the manoeuvre on the same heading as
the first loop entry.
2. PRE-FLIGHT BRIEFING
Refer to information provided in exercises on the Loop, Slow Roll and Roll off the Top of the Loop.
3. DESCRIPTION OF AIR EXERCISE
a. APPLICABLE PROCEDURES AND CHECKLISTS
b. AEROPLANE HANDLING TECHNIQUES:-
DEMONSTRATION OBSERVATION
1. HORIZONTAL FIGURE OF EIGHT i. Lookout.
ii. Complete aerobatic checks – HASELL.
iii. Carry out the same procedures and flying
technique as applicable for the Loop, up to the
position where the aeroplane is inverted at the
top of the loop.
iv. Allow the inverted aeroplane to enter the down
side of the loop.
v. When aeroplane’s longitudinal axis is pointed
45° below the horizon with wings level and
aligned with line feature, roll aeroplane to
upright position.
vi. Heading has now changed 180° from entry
direction.
vii. Continue dive in order to build up speed for
entry into second half of manoeuvre.
viii. Gain loop entry speed.
ix. Fly aeroplane around the second loop until
aeroplane’s longitudinal axis is once again
pointed 45° below the horizon – check wings
level.
x. Roll aeroplane to upright position.
xi. Direction of the dive should be the same as
that for entry into the first loop.
xii. Recover to flight path required and set power
accordingly.
xiii. Minimum height for the aeroplane to be at an
even keel is 2000ft agl.
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