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Note
l If uncommanded roll and/or yaw occurs
during high AOA maneuvering (above 15
units), assume departure from controlled
flight and apply appropriate departure
and/or spin recovery procedures. Gtherwise,
perform appropriate procedures
below.
. Failures that may cause uncommanded roll
and/or yaw include, but are not limited to
the following:
a. Engine failure
b. Stuck up spoilers
c. Asymmetric flaps and slats
d. Uncommanded differential stabilizer
and/or rudder automatic flight control
system inputs caused by abnormal
power transients.
e. Rudderhardoverfr om yaw SAS (19O)).
* 1. Iftlap transition FLAP handle- previous Position.
*2. Rudder and stick - Opposite Roll/Yaw. If light remains illuminated: I Note
For spoiler malfunctions, use lateral stick as
primary lateral control and rudder only as
needed to maintain balanced flight.
*3. AOA - Below 12 Units.
*4. Downwingengine-h&4XTHRUST(iimquired).
5. Roll SAS -ON.
3. Decelerate below 1.0 TMN,
4. YAW SAS PWR cb’s-Cycle (LB3, LC3, LD3).
5. If light remains illuminated, remain below 1.0
TMN.
If light out:
6. Reset YAW STAB switch.
6. Roll trim - Opposite Stick (if required).
7. Out of control below 10,000 feet -EJECT.
8. Control regained climb and investigate for:
a. Flap and slat asymmetry
b. SAS malfunction
14.12.3 Pitch or Roll Channel Failure. Failure
of a single pitch or roll channel damper is indicated by
that channel STAB caution light The remaining channel
provides 50 percent of the scheduled gain and damping
authority. The affected STAB AUG switch remains in
ON if only one channel fails.
Failure of two channels illuminates both STAB lights
ofthe affected system. The affected STAB AUG switch
NAVAlR 0%F14AAD-1
c. Spoiler malfunction
d. Bardovermdder
e. Stmctumldamage
9. Slow-fly aireraft to determine controllability at
10,000 feet AGL minimum.
14.12.2 Yaw Channel Failure. Failure of a single
yaw channel does not affect yaw stabilization since the
system is triply redundant. Single channel Mute is indicated
when the YAW STAB OP light illumina@while
the STAB AUG switch remains ON. A second yaw
channel failure is indicated when the YAW STAB OUT
light illuminates. The YAW STAB switch is not automatically
positioned to OFF. CV landings with total
YAW SAS failure require increased attention to yaw
oscillations in turbulence and/or adverse yaw during
lineup corrections.
14.12.2.1 YAW STAB OP Light
1. MASTER RESET pushbutton - Depress.
2. If light remains illuminated - Stay Below 1.0
-MN.
14.g2.2.2 YAW STAB OUT Llght
1. YAW STAB switch-OFF.
2. MASTER RESET pushbutton-Depress.
---~
NAVAIR gl-Fl4AAD-1
is automatically positioned to OFF. If the stability augmentation
system self-test circuit can isolate the faulty
channel, the remaining channel light will go out; however,
the STAB AUG switch must be reset to the ON
position. CV landings with either or both PITCH and
ROLL SAS failures can be accomplished with some
degradation in normal approach handling qualities.
14.12.3.1 Single PITCH or ROLL STAB Light
1. MASTER RESET pushbutton - Depress.
2. If light remains illuminated -No Limitations.
14.12.3.2 Both PITCH or Both ROLL STAB
Lights
fzlJ+-J
With both PITCH and ROLL lights illtinated,
ground-roll braking may be inhibited.
1. Airspeed -Reduce to Stab Limits.
2. Pitch-Not Restricted.
3. Roll - 1.6 TMN.
4. Wait 10 seconds for self-test.
5. PITCH CMPTR AC cb or ROLL CMPTR AC cb
-Cycle (LA1 or LBl).
6. Recheck lights:.
a. If one STAB light off - Reset STAB AUG
Switch, No Limits.
b. If both lights remain illuminated- Leave Appropriate
STAB AUG Switches OFF, Stay Below
Stab Limits.
14.12.4 STAB AUG Transients
1. Paddle switch - Depress.
2. Airspeed - Decelerate Below 1 .O TMN.
3. STAB AUG switches -All OFF.
4. MASTER RESET pushbutton - Depress.
5. STAB AUG switches - RESET (reset individually
to isolate failure).
Note
Pitch SAS loss may result in loss of outboard
spoilers. Roll SAS loss may result in loss of
inboard spoilers.
14.12.5 Rudder Authority Failure. Scheduling of
allowable rudder deflection is computed in the CADC
as a function of dynamic pressure. If the command signals
and position feedback do not agree, power is m
moved, stopping further movement and the RUDDER
AUTH light illuminates. Directional authority is never
less than 9.5’ of rudder.
14.12.5.1 RUDDER AUTH Light
　
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