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Autopilot inoperative.
Normal NWS inoperative.
Loss of HUD barometric altitude (radar altitude
available below 5,000 feet).
Standby altimeter available.
Loss of IFF altitude reporting.
Loss of speedbrake function.
MAD sensor data lost.
Figure 15-12. FCS Failure Indications and
Effects
Figure 15-13. FCS Failure Indications and
Effects
A1-F18EA-NFM-000
V-15-24 CHANGE 1
NOTE
A simultaneous failure of channels 1
and 3 prevents the display of any
FCS cautions. The FCS display shows
the word INVALID. Use FCES light
to monitor FCS failures.
EFFECTS:
Autopilot inoperative.
Loss of HUD air data displays.
Roll rate limiting is failed. Use no more than ½
lateral stick with rate limited stores aboard.
FCS G-limiter defaults to 7.5g.
Degraded flying qualities >20° in AUTO
FLAPS.
Use no more than ±15° bank when selecting
HALF or FULL FLAPS from AUTO
FLAPS.
Loss of speedbrake function.
EFFECTS:
FLAP SCHED caution is not displayed.
Left probe AOA blanked from FCS status page.
Autopilot inoperative.
ATC inoperative.
Normal NWS inoperative.
Left leading edge flap locked in failed position.
Left aileron and left rudder failed (flutter
damper).
Left spoiler.
Flaps - AUTO:
Loss of speedbrake function.
Flaps freeze.
Flaps - HALF or FULL:
Right leading edge flap frozen.
Trailing edge flaps 30° or 40° maximum.
Scheduled with airspeed.
No aileron droop.
No rudder toe-in.
Loss of AOA approach/indexer lights.
Loss of AHRS over temperature detection.
Figure 15-14. FCS Failure Indications and
Effects
Figure 15-15. FCS Failure Indications and
Effects
A1-F18EA-NFM-000
V-15-25 CHANGE 1
EFFECTS:
FLAP SCHED caution is not displayed.
Right probe AOA blanked from FCS status page.
Autopilot inoperative.
ATC inoperative.
Normal NWS inoperative.
Right leading edge flap locked in failed position.
Right aileron and right rudder failed
(flutter damper).
Loss of HUD barometric altitude (radar
altitude available below 5,000 feet).
Standby altimeter available.
Loss of IFF altitude reporting.
Loss of AOA/yaw rate warning tone.
MAD sensor data lost.
Flaps - AUTO:
Flaps freeze.
Loss of speedbrake function.
Flaps - HALF or FULL:
Left leading edge flap frozen.
Trailing edge flaps 30° or 40° maximum.
Scheduled with airspeed.
No aileron droop.
No rudder toe-in.
Figure 15-16. FCS Failure Indications and
Effects
A1-F18EA-NFM-000
V-15-26 CHANGE 1
NOTE
If failure occurs in flaps AUTO,
GAIN ORIDE must be selected to
obtain HALF or FULL flaps setting.
EFFECTS:
FLAP SCHED caution is displayed.
Autopilot inoperative.
ATC inoperative.
Loss of HUD barometric altitude, airspeed
and vertical velocity.
Loss of IFF altitude reporting.
Loss of FCES light.
Loss of AOA bracket and AOA approach/indexer
lights.
Loss of speedbrake function.
Loss of AOA/yaw rate warning tone.
Loss of air data.
MAD sensor data lost.
Loss of AHRS over temperature detection
Flaps - AUTO:
Degraded flying qualities.
Flaps function with frozen air data values.
Flaps schedule with AOA.
Flaps - HALF or FULL:
Trailing edge flaps 30° or 40°.
Leading edge flaps and rudder toe-in schedule
with AOA.
NWS inoperative.
Figure 15-17. FCS Failure Indications and
Effects
A1-F18EA-NFM-000
V-15-27 CHANGE 1
EFFECTS:
Autopilot inoperative.
ATC inoperative.
Normal NWS inoperative.
Loss of AOA bracket and AOA approach/indexer
lights.
Loss of speedbrake function.
Loss of AOA/yaw rate warning tone.
Loss of AHRS overtemperature detection.
NOTE
FCS status display is shown for a
right aileron channel 2 failure but is
typical for any single channel failure
of aileron, rudder, leading edge flap,
or spoiler.
EFFECTS:
No change in flying qualities.
One more electrical failure causes the actuator to
revert to degraded mode.
Figure 15-18. FCS Failure Indications and
Effects
Figure 15-19. FCS Failure Indications and
Effects
A1-F18EA-NFM-000
V-15-28 CHANGE 1
NOTE
FCS status display is shown for a left
trailing edge flap channel 1 failure
but is typical for any single channel
failure of trailing edge flap or
stabilator.
EFFECTS:
No change in flying qualities.
Two more electrical failures causes the actuator
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NATOPS Flight Manual 飞行手册 2(58)
