757 最低设备清单 Minimum Equipment List (MEL) 2(88)

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 Run the affected engine at idle power setting.
 Record the “SCAV” pressure reading from the PerF/APU page on EICAS.
 If the “SCAV” pressure is less than 3 psi, dispatch is permitted.
 If the “SCAV” pressure is 3 psi or greater, dispatch is not permitted.
 
REPAIR INTERVAL B 2 NUMBER INSTALLED
ITEM
79-31-1 OIL QTY Indications   1 NUMBER REQUIRED FOR DISPATCH
    REMARKS OR EXCEPTIONS
(M+P) One may be inoperative provided:
 Oil tank is filled to recommended capacity before each departure,
 There is no evidence of above normal oil consumption or leakage, and
 Associated ENG OIL PRESS and OIL TEMP indications operate normally, and
 Associated low ENG OIL PRESS light operates normally.

EICAS STATUS MESSAGES
None
PLACARD
As appropriate - L or R ENG OIL QUANTITY INDICATION INOP MAINTENANCE (M)
 Fill associated engine oil tank (AMM 12-13-01/301).
WARNING: WAIT FOR A MINIMUM OF FIVE MINUTES BEFORE YOU REMOVE THE OIL TANK CAP AFTER ENGINE SHUTDOWN. THE PRESSURE IN THE TANK CAN CAUSE A SPRAY OF HOT OIL WHICH CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 Examine engine exterior, including fan stream area, for evidence of oil leakage.
 Check associated engine’s records to ensure oil consumption is within engine manufacturer’s limits (AMM 71-00-00/201) or operator’s approved limits (if more restrictive).
 
REPAIR INTERVAL C 2 NUMBER INSTALLED
ITEM   1 NUMBER REQUIRED FOR DISPATCH
    REMARKS OR EXCEPTIONS
One may be inoperative provided associated OIL PRESS, TEMP and QTY indications operate normally.
79-33-1 Low ENG OIL PRESS
Indication System    

EICAS STATUS MESSAGES
None
PLACARD
Associated ENG OIL PRESS light - INOP
 
EICAS STATUS MESSAGES
None
PLACARD
As appropriate - L and/or R ENG OIL TEMP SENSING ELEMENT INOP OPERATIONS (O)
Position the EICAS computer selector on the forward electronics panel to AUTO, L, or R as necessary to display both engine oil temperatures at the same time.
 
EICAS STATUS MESSAGES
None
PLACARD
Associated start VALVE light on overhead panel - VLV LIGHT INOP OPERATIONS (O)
Engine Start Procedure
1. Start associated engine first, using pneumatic duct pressure indication to ensure that the start valve has closed. Use normal start procedures except:
 Place engine bleed air switch for associated engine in OFF position. NOTE: All pneumatic duct isolation switches should be ON.
 When ENG START selector is moved to GND position, observe a drop in duct pressure, followed by a partial recovery.
 After engine reaches 53% N2:
　
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