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to prevent ECS compressor/turbine failure
when icing occurs. Depending on the severity of the
failure which caused the icing condition, the capacity
of the bypass valve may be exceeded. If an ECS
ICING caution appears (without MSPs 8A0, 8A1, or
8E1), there is one of two outcomes: (1) bypass, in
which case the system needs to be de-iced but the
ECS continues to function or (2) the ECS
compressor/turbine fails and conditioned ECS airflow
is lost (loss of cabin pressurization and AV
AIR HOT caution).
The ECS ICING caution may or may not be removed
after selecting OFF/RAM.
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,
only the following essential avionics receive adequate
cooling: FCC A, one AHRS, and the right
transformer rectifier. All other avionics systems are
susceptible to failure or shutdown due to heat. Ambient
temperature significantly influences the rate
at which avionics systems fail.
GROUND
1. Throttles - IDLE
2. BLEED AIR knob - OFF
3. ECS MODE switch - OFF/RAM
4. Do not takeoff.
INFLIGHT
1. MSP codes - CHECK
If MSP 8A0 or 8A1 (ECS control fail) or 8E1
(sensor fail) present -
2. Throttles - Minimum practical (to reduce cabin
pressure surge).
3. BIT/HYDRO-MECH/ECS RESET option -
SELECT
If ECS continues to operate (good
pressure and no AV AIR HOT caution) -
1. ENG format - SELECT
2. Airspeed - Increase to at least 0°C INLET
TEMP (if possible)
If cabin temp extremely cold -
3. ECS MODE switch - MAN
4. CABIN TEMP knob - FULL HOT
5. Land as soon as practical.
If ECS fails (pressurization lost or AV AIR
HOT caution) -
1. Maintain alt below 25,000 feet (20,000-25,000
feet optimum for cooling).
2. Maintain airspeed below 325 KCAS (300 to 325
KCAS opt for cooling)
3. ECS MODE sw - OFF/RAM
4. AV COOL switch - EMERG
5. CABIN TEMP knob - FULL COLD (cabin
pressure slowly increases)
If aft avionics cooling fan NOT disabled -
6. Land as soon as practical.
If aft avionics cooling fan disabled OR AV
AIR HOT caution -
6. Non-essential avionics equip - OFF
(e.g., RADAR, UFCD controlled avionics, ECM,
sensors, MC2).
7. Land as soon as possible.
L EGT HIGH
R EGT HIGH
²Engine Left (Right),
Engine Left (Right)²
· Designated exhaust gas temperature out of limits.
*1. Throttle affected engine - IDLE
2. ENG format - CHECK EGT
If EGT high at IDLE -
3. Throttle affected engine - OFF
A1-F18EA-NFM-000
Figure 12-1. Warning/Caution/Advisory Displays (Sheet 14 of 55)
V-12-16 ORIGINAL
DDI Cautions and Caution Lights
INDICATOR · CAUSE / REMARKS CORRECTIVE ACTION
L ENG
R ENG
²Engine Left (Right)
Engine Left (Right)²
· Abnormal engine condition due to a failure(s) in
the engine control system. The failure(s) result in
a change in ENG STATUS on the ENG format:
a. PERF90 - 10% or less thrust loss and/or
slower engine transients. AB is not inhibited.
b. AB FAIL - No afterburner capability.
c. THRUST - Engine thrust limited to between
40% and 90% and significantly slower transients.
d. IDLE - Engine limited to idle power.
e. SHUTDN - Engine automatically shutdown.
If ENG STATUS has changed, a FADEC reset
should not be attempted, particularly airborne, as
any degrade in ENG STATUS is most likely indicative
of the failure of a mechanical component. Under
these conditions, the engine may fail to restart
following shutdown and FADEC reset attempt.
With an ENG STATUS of PERF90, AB FAIL,
THRUST, or IDLE, engine performance is degraded,
but the FADEC is still controlling the engine
and there are NO throttle restrictions.
A FADEC reset should not normally be attempted.
GROUND
1. Do not takeoff.
INFLIGHT
1. ENG format - Determine ENG STATUS
If PERF 90, ABFAIL, THRUST, or IDLE -
2. Land as soon as practical.
For landing -
3. FLAP switch - HALF (THRUST or IDLE)
4. Assess throttle response in the landing configuration.
If SHUTDN -
2. Throttle affected engine - OFF
3. Refer to Single Engine Approach and Landing
Procedure.
If SHUTDN and operational necessity dictates
-
2. Throttle affected engine - OFF
3. Reset lined out FADEC by commanding a
channel transfer.
If caution clears -
4. Attempt affected engine restart.
　
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本文鏈接地址：NATOPS Flight Manual 飛行手冊 2(23)