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wing-sweep electrical command path is indicated by
illumination of the WING SWEEP advisory light followed
by normal operation on the remaining channel.
Failure of the remaining channel is indicated by a W/S
caution legend on the MFD and requires that wingsweep
control be exercised through the emergency
WING SWEEP handle. Transient failures in the CADC
can be reset by pressing the MASTER RESET pushbutton,
which recycles the failure detection system.
2.20.4.2 Preflight Check. A preflight check of the
wing-sweep system to assure proper operation of the
electrical command circuits without moving the wings
should be accomplished after starting engines while the
wings are in oversweep (759.
1. Set wing-sweep mode switch to AUTO.
Note
The CADC caution light will illuminate and
test will not run if AUTO is not selected on
the wing-sweep switch.
2. Press MASTER RESET pushbutton.
3. Set MASTER TEST switch to WG SWP.
4. Monitor test by observing:
a. Wing-sweep limit pointer drives to 44O.
b. Illumination of the WING SWEEP advisory
light and FLAP caution light.
ORIGINAL 2-88
NAVAIR Ol-FUAAD-1
Figure 2-48. Wing-Sweep Interlocks
2-87 ORIGIhlAL
NAVAIR Ql-F14AAD-l
Note
The WING SWEEP advisory light will illuminate
3 seconds after test starts, then go off
and illuminate again at 8 seconds into test.
c. RDC SPD warning legend on MFD.
d. At end of test (approximately 25 seconds) the
limit pointer will drive to 20’ and the above
lights will go off.
5. Set MASTER TEST switch to OFF.
Note
Ignore illumination of RUDDER AUTH
caution or MACH TRIM advisory lights and
motion of the control stick ifthey occur during
the test.
2.21 FLAPS AND SLATS
The flaps and slats form the high-lift system, which
prwides the aircraft with augmented lift during the two
modeso f operation:t akeoff or landing,a nd maneuvering
ilight, The flaps am.o f the single-slottedt ype, sectioned
into threep anelso ne achw ing. The two outboards ections
am the main Saps utilixed during both modes of operation.
The inbeard section (auxilii flap) is commanded only
during takeoff or landing. The slats consist oftwo sections
per wing mechanically linked to tbe main flaps. Flaps
down greater than lo0 enables the wheels warning light
interlock, and greater than 25’ enables direct li8 control
andp ower approachs poilerg earing.
2.21.1 Flap and Slat Controls
Pilot controls for flap and slat takeoff, landing, and
maneuvering modes are illustrated in Figure 2-49.
2.21.1.1 FLAP Handle. The FLAP handle, located
outboard of the throttles, is used to manually command
flaps and slats to the takeoff and landing position. Flap
handle commands are transmittedby control cable to the
flap and slat and wing-sweep control box where they are
integrated with CADC electromechanical inputs to
command proper flap and slat position.
2.21 .I .I .l Emergency Flaps. EMER UP enables
the pilot to override any electromechanical commands
that may exist becauseo f malfunction of the CADC. Te
position the flaps, move the FLAP handle to the end of
the normal travel range; then, move the handle outboard
and continue moving to extreme EMER UP. While moving
the handle, forces may be higher than normal.
EMER DN has no function.
A slip clutch assembly is installed between
the combined system forward flap hydraulic
motor and the center gearbox assembly.
While this will relieve some stall torque on
the hydraulic motor, extremely fast reversals
of flap direction while flaps are in motion
may result in eventual faihue. of the flap and
slat flexible driveshaft.
2.21.1.2 Maneuver Flap and Slat Thumbwheel.
The maneuver flap and slat thumbwheel is located
on the left side ofthe stick grip and is spring loaded
to the center position. With LDG GEAR and FLAP
handles up, automatic CADC flap and slat positioning
can be overridden with pilot thumbwheel inputs to partially
or frilly extend or retract the maneuvering flaps
and slats; however, the next time angle of attack crosses
an extension or retraction threshold, the automatic commandwill
again take precedenceu, nlessm anually overridden
again. Manual thumbwheel command is a
proportional command.
2.21.1.3 Main Flaps. The main flaps on each wing
consist of two sections simultaneously driven by four
mechanical actuators geared to a common flap driveshaft.
Each wing incorporates a flap asymmetry sensor
and flap overtravel switches for both the extension and
retraction-cycles.
Cove doors, spoilers, eyebrow doors, and gusses operate
　
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