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If caution on after 1 minute -
2. ECS MODE switch - MAN
If caution clears -
3. Land as soon as practical.
If caution on after another minute or if
cabin pressurization is abnormal -
4. Maintain alt below 25,000 feet (20,000 to 25,000
feet optimum for cooling).
5. Maintain airspeed below 325 KCAS (300 to 325
KCAS opt for cooling)
6. ECS MODE switch - OFF/RAM
7. AV COOL switch - EMERG
8. CABIN TEMP knob - FULL COLD (cabin
pressure will slowly increase)
If caution off AND aft avionics cooling fan
NOT disabled -
9. Land as soon as practical.
If caution on OR aft avionics cooling fan
disabled -
9. Non-essential avionics equip - OFF (e.g., RADAR,
UFCD controlled avionics, ECM, sensors,
MC2).
10. Land as soon as possible.
A1-F18EA-NFM-000
Figure 12-1. Warning/Caution/Advisory Displays (Sheet 8 of 55)
V-12-10 ORIGINAL
DDI Cautions and Caution Lights
INDICATOR · CAUSE / REMARKS CORRECTIVE ACTION
BATT SW
BATT SW
Caution Light
ALL AIRCRAFT
· BATT switch is ON on the ground in the absence
of ac power (first engine start). Battery is
depleting and the switch should be placed to
OFF unless APU start is about to be made.
· BATT switch is OFF inflight. (Switch should be
placed to ON to provide essential bus backup
capability from the PMGs and the battery.)
AIRCRAFT 165533 THRU 165544
· Battery is not being recharged inflight (BATT
switch ON). Battery charger has failed or the R
GEN has failed with the buses isolated (R GEN
and GEN TIE caution lights).
· Battery is powering essential bus inflight (dual
GEN AND a dual PMG failure). At least 5 to 10
minutes of battery power remains to run the
FCCs.
ALL AIRCRAFT
1. BATT switch - CONFIRM ON
AIRCRAFT 165533 THRU 165544
If all cockpit displays operating (battery
charger has failed) -
2. Land as soon as practical.
If accompanied by R GEN and GEN TIE
caution lights -
2. Refer to GEN TIE caution procedures.
3. Land as soon as practical.
If all cockpit power lost (except essential
bus equipment) -
2. Refer to L GEN/R GEN (DUAL GEN FAILURE)
procedures.
3. Land immediately.
BAY DISCH
· Dry bay fire detected and Dry Bay Fire Suppression
System (DBFSS) automatically discharged.
DBFSS is only armed with the LDG GEAR
handle UP.
1. Use all available means to confirm absence of
fire.
2. Land as soon as possible.
BAY FIRE
With LDG GEAR handle UP -
· Dry bay fire condition still detected 3 seconds
after DBFSS discharge (e.g., fire was not extinguished).
With LDG GEAR handle DN -
· Dry bay fire detected. (No extinguishing capability
available.)
If dry bay fire goes out, the BAY FIRE caution is
removed.
1. Use all available means to confirm presence of
fire.
2. Land immediately.
BINGO
²Bingo, Bingo² · Internal fuel level below BINGO setting. 1. Adjust BINGO setting.
A1-F18EA-NFM-000
Figure 12-1. Warning/Caution/Advisory Displays (Sheet 9 of 55)
V-12-11 ORIGINAL
DDI Cautions and Caution Lights
INDICATOR · CAUSE / REMARKS CORRECTIVE ACTION
L BLD OFF
R BLD OFF
(Both BLEED warning
lights out)
· The corresponding primary bleed air shutoff
valve has been commanded closed. Caution(s) are
NOT indications of actual valve position.
1. BALD system detected a leak in one or both
bleed air systems and the overheat condition
no longer exists (L, R, or both cautions)
2. Over pressurization detected in one or both
systems (both cautions)
3. BLEED AIR knob in L OFF, R OFF, or OFF
(L, R, or both cautions).
4. ENG CRANK switch in L or R (L or R caution,
respectively).
5. FIRE test switch in TEST A or TEST B
(both cautions).
· Automatic functioning of the BALD system may
extinguish the red BLEED warning light(s) prior to
aircrew recognition and may not trigger the appropriate
voice alerts. In this case, cycling the BLEED
AIR knob to remove the L or R BLD OFF caution(
s) reintroduces hot bleed air to the leaking
duct. If the sensing element was damaged by the
leak, automatic shutdown and isolation capability
may be lost. Extensive damage or fire may result.
· If the aft avionics cooling fan has been disabled,
the OFF/RAM position of the ECS MODE switch
will not energize the aft avionics cooling fan. In this
case, only limited avionics cooling is available using
ram air. With the AV COOL switch set to EMERG,
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NATOPS Flight Manual 飞行手册 2(20)
