EICAS STATUS MESSAGES
None
PLACARD
Anti-ice control panel as appropriate - L(R) WAI VLV LIGHT INOP OPERATIONS (O)
During operations in icing conditions, monitor valve operation by observing pressure indicator when repositioning the WING ANTI-ICE switch. Pressure fluctuation is an indication of valve movement.
B757 - 200 MINIMUM EQUIPMENT LIST
EICAS STATUS MESSAGES
L ENG TAI VALVE
R ENG TAI VALVE
PLACARD
Anti-ice control panel as appropriate - L(R) EAI COWL VLV INOP CLOSED (or OPEN)
MAINTENANCE (M)
1. Deactivate thrust reverser isolation valve for ground maintenance (AMM 78-31-00/201)
2. Access engine inlet thermal anti-ice valve by opening the access panel on the appropriate engine.
For left engine, open access panel 414AR.
For right engine, open access panel 424AR.
3. Disconnect, cap and stow TAI valve connector.
NOTE: Disconnecting the TAI valve connector will cause the associated engine anti-ice switch-light
to remain illuminated for the duration of flight.
4. Perform the following if desired valve position is closed.
A. Check that vane manual drive indicates valve CLOSED.
B757 - 200 MINIMUM EQUIPMENT LIST
B. Pull vane lock out and rotate 90° clockwise to LOCK CLOSED position. 5. Perform the following if desired valve position is open.
CAUTION: IF THE TAI VALVE WILL BE LOCKED OPEN FOR DISPATCH, CLOSE THE VALVE DURING
GROUND OPERATIONS WHEN THE ASSOCIATED PNEUMATIC DUCT IS PRESSURIZED
BY THE APU OR GROUND CART AIR. REOPEN THE VALVE FOR DISPATCH.
Check that vane manual drive indicates valve OPEN.
Pull vane lock out and rotate 90° counterclockwise to LOCK OPEN position.
ENGINE INLET THERMAL ANTI-ICING DUCT
MANUAL
MANUAL VALVE POSITIONING
ENGINE INLET COWL TAI
OPERATIONS (O)
Observe MEL limitations. Reduced thrust takeoffs using derate or assumed temperature are not permitted.
Apply the following EPR adjustments to the appropriate engine and thrust setting:
Thrust EPR Adjustments
Setting
Altitude (1,000 feet)
-1 to 6 6.1 to 15 15.1 to 25 25.1 to 40 40.1 to 42
All Thrust
Settings -0.03 -0.04 -0.05 -0.07 -0.085
Apply the following performance limited weight adjustments as appropriate: 中國航空網 www.k6050.com 航空翻譯 www.aviation.cn 本文鏈接地址：757 最低設備清單 Minimum Equipment List (MEL) 2(24)
