Table 7-2. Simulated Malfunction Details - Continued
Method of
Indications and effects on
Effects sensed by trainee
introduction
related systems as presented
if corrective action is
Malfunction
by instructor
to the instructor and trainee
not taken
DASH fail
674
DASH actuators extend to full
At airspeeds below 100
authority.
KIAS, DASH programs to
full extension (helicopter
pitches down). At air-
speeds above 100 KIAS,
DASH programs to full
extension (aircraft
pitches up). Airspeed
hold function is lost.
DASH stick
675
Airspeed hold function is lost.
If stick position is not
gradient freeze
For failed extended case,
adjusted by means of AFCS
cyclic stick is displaced far-
pitch trim system to alle-
ther forward than normal at
viate unnatural stick
airspeeds below 80 knots. For
position, sufficient stick
failed retracted case. the
travel for certain maneu-
effect is the same as if sys-
vers may not be possible.
tem were turned off. No posi-
tive stick gradient with air-
speed.
Longitudinal CCDA
676
Longitudinal CCDA trim motor
Loss of pitch trim.
trim fail
drives to limit in same direc-
Cyclic transients in
tion as trim selected (forward
pitch axis.
or aft).
Proximity
677
At touchdown, longitudinal
Longitudinal cyclic trim
switch fail
cyclic trim does not drive to
indicator does not drive
ground (GND) position.
to GND position.
UTL system
678
APU hydraulic pump does not
UTL SYSTEM FAIL indicator
fail APU
operate.
illuminates.
7-21
