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l Sufftcient hydraulic pressure for smooth
flight control inputs should be available
with one engine windmilling at 18-
percent rpm or two engines at 11 percent.
l Dive angles should not exceed 45”. At
7,500 feet AGL minimum, commence a
smooth 2g pullup to a 20” dive, maximum.
At 2,000 feet AGL minimum, pull up to
level flight. If the airstatt is unsuccessful,
convert airspeed to altitude and eject at
350 knots or less before controllability is
lost.
*5. Airspeed - 450 Knots (altitude permitting).
6. OBOGS master switch - BACKUP.
men start is completed:
7. BACK UP IGNITION switch - OFF.
8. ENG MODE SELECT - PRI.
9. OBOGS master switch - ON.
‘m
Ensure ECS service air is available to
OBOGS prior to selecting the OBOGS master
switch ON.
When primary mode is restored:
10. Maintain constant subsonic Mach in level flight.
11. Affected L or R AICS cb - Cycle (LF 1, left or
LG 1, right).
p-K-1
If WMG SWEEP advisory light is illuminated,
cycling L AICS circuit breaker (LFl)
may cause unintentional wing sweep unless
WING SWEEP DRIVE NO. 1 (LDl) and
WG SWP DR NO. 2iMANUV FLAP (LEl)
cb’s are pulled.
1452.3 Crossbleed Airstart
1. Throttle (had engine) - OFF.
2. FUEL SHUT OFF handle - Check In.
3. Throttle (good engine)- SO-PercenRt pm
(minimum).
4. BACK UP IGNITION switch - ON.
5. ENG MODE SELECT - PRI.
6. ENG CRANK switch (bad engine) - ON.
7. Throttle (bad engine) - IDLE Immediately.
Note
Quickest light-offs are achievedwith throttle
to IDLE at less than lo-percent ‘pm.
If hung start:
8. Throttle (bad engine) - OFF Then IDLE.
If still hung:
9. ENG MODE SELECT - SEC.
When start is completed:
10. BACK UP IGNITION switch-OFF.
11. ENG MODE SELECT - PRI.
When primary mode is restored:
12. Maintain constant subsonic Mach in level flight.
13. Affected L or R AICS cb - Cycle (LFl, left or
LGl , right).
[W/\RNING(
If WING SWEEP advisory light is illuminated,
cycling L AICS circuit breaker (LFl)
may cause unintentional wing sweep unless
WING SWEEP DRIVE NO. 1 (LDI) and
WG SWP DR NO. 2IMANUV FLAP (LEl)
cb’s are pulled.
14.5.3 Single-Engine Flight Characteristics.
Single-engine flight characteristics are dependent on
gross weight, configuration, angle of attack, wing
sweep, and maneuvering requirements. In the cruise
configuration, with one engine operating at military/
high power settings, rudder deflection and/or trim is
required to prevent yaw toward the failed engine. However,
s ingle-enginep erformancec apabilitiesc an be significantly
restricted by adverse flying qualities in
approachp ower configuration,p articularly at high gross
weights in turning flight because of the effects of thrust
asymmetry at normal approach speed. This degrades
with turns into the failed engine such that mdderrequiremerits
to maintain level flight can exceed available rudder
control. Flight in this configuration should be
planned to avoid turns into the failed engine with bank
angles limited to 20” maximum and AOA limited to 12
units. The aircraft design is such that no one system
(flight control, pneumatic, electrical, etc.) depends on a
specific engine. Therefore, loss of an engine does not
result in loss ofany complete system as long as the HYD
TRANSFER PUMP is operative. Refer to NAVAIR Ol-
F14AAP-1.1 for single-engine performance data.
14.5.3.1 Single-Engine Failure During Flight.
It is uncommon to encounter compressor stalls that require
immediate engine shutdown. Occasionally, mechanical
failure of FllO engine components results in
engine failure. These failures may be obvious as when
accompaniedb y severee nginev ibration or may be subtle
as indicated by a lack of engine response to throttle
changesT. urbine failure for example, may appearo nly
NAVAIR Ol-Fl4AAD-1
as an apparenlto ss of thrusta nd/ort he inability to obtain
a successfual irstart.F or confirmed mechanicalf ailures,
the engines houldb e secureda nd the FUEL SHUT OFF
handle pulled.
If an engine fails or a mechanical malfunction
has been determined, the respective
FUEL SHUT OFF handle shall be pulled
immediately after engine shutdown to reduce
the possibility of fire or fuel migration.
Note
ECS service air pressure may be inadequate
for OBOGS when operating on a single engine
at idle. Increasing the throttle position
for the operating engine above IDLE will
increase pressure. This will also close the
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F-14D 飞行手册 Flight Manual 2(103)
