NOTE: If one or more A/P Engage Switches is inoperative, comply with Item 22-10-1. If A/T ARM switch is inoperative OFF, comply with Item 22-30-1. If one or more F/D Switches is inoperative OFF, comply with Item 34-22-4.
EICAS STATUS MESSAGES
None
PLACARD
Affected MCP switch(es) - INOP OPERATIONS (O)
If A/P Engage Switches/Paddles are inoperative, the associated autopilot may not be selectable for an automatic landing. If associated autopilots operate normally, all operative autopilots will engage automatically at 1,500 feet AGL after selection of the APP switch (if installed) during an autoland approach. Monitor autoland status annunciators (ASA) for autoland status.
If A/T SPD mode engage switch is inoperative, Autothrottle Speed mode cannot be manually selected. A/T Speed mode is the default autothrottle mode upon exit of FL CH or V NAV or G/A, which is not affected by an inoperative SPD switch. V NAV normally commands the autothrottle to speeds determined by the FMC, which is also not affected by an inoperative SPD switch.
If LOC switch is inoperative, the Localizer mode is not available for use during a localizer-dependent approach (examples: localizer-only, localizer backcourse, LDA, or SDF) or departure procedure. L NAV, HDG SEL, or manual flight may be used.
If either the LOC or B/CRS switch is inoperative, Backcourse mode for backcourse localizer approach is not available. L NAV, HDG SEL, or manual flight may be used.
If a pitch and/or roll mode engage switch is inoperative, flight crews must consider usage of other autopilot modes appropriate for the planned route. The default autopilot mode is Vertical Speed and Heading Hold. These modes may be used to hold vertical speed (or altitude with targeted V/S = 000) and heading even if the associated mode engage switches are inoperative. Flight Level Change and Vertical Speed modes automatically transition to Altitude Hold even if the ALT HOLD switch is inoperative.
For enroute operations requiring altitude hold capability, either V NAV, ALT HOLD, or VERT SPD may be used.
EICAS STATUS MESSAGES
None
PLACARD
Mask affected MCP window(s) - WINDOW INOP OPERATIONS (O)
If IAS/MACH and/or HDG windows are inoperative, associated target values may still be set and appropriate autopilot modes used by observing bugs on ADI and/or HSI.
If VERT SPD window is inoperative, do not manually select Vertical Speed mode. Vertical Speed mode may engage as the default autopilot mode, but another pitch mode should then be selected.
B757 - 200 MINIMUM EQUIPMENT LIST
REPAIR INTERVAL NUMBER INSTALLED
ITEM
22-11-6 Mode Control Panel
Switch Lights NUMBER REQUIRED FOR DISPATCH
REMARKS OR EXCEPTIONS
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本文链接地址：757 最低设备清单 Minimum Equipment List (MEL) 1(55)
