757 最低设备清单 Minimum Equipment List (MEL) 2(53)

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4. AIR DATA Switch:
1) Place the L AIR DATA COMPTR TEST SWITCH (P61) in the test position and observe that test data (airspeed, altitude, etc.) are displayed on only one pilot’s instruments.
 
EICAS STATUS MESSAGES
None
PLACARD
Appropriate indicator - INOP
If both mach indications are inoperative attach a placard on the instrument panel - ALTITUDE LIMITED TO 30,000 FT
If the Command Airspeed cursor is inoperative, placard near airspeed indicator - COMMAND AIRSPEED CURSOR INOP
OPERATIONS (O)
Use CDU Speed Tape Markings to obtain operational reference speeds.
 
NUMBER INSTALLED

  NUMBER REQUIRED FOR DISPATCH
2 1 REMARKS OR EXCEPTIONS

 
EICAS STATUS MESSAGES
None
PLACARD
As appropriate
 
NUMBER INSTALLED

 NUMBER REQUIRED FOR DISPATCH
REMARKS OR EXCEPTIONS
1 0 May be inoperative provided VMC exists at departure and arrival airports.
 
EICAS STATUS MESSAGES
None
PLACARD
As appropriate
 
REPAIR INTERVAL C 1 NUMBER INSTALLED
ITEM   0 NUMBER REQUIRED FOR DISPATCH
    REMARKS OR EXCEPTIONS
(O) May be inoperative provided one other temperature indication (RAT or SAT) is available.
34-13-7 Total Air Temperature
Indication (TAT)    

EICAS STATUS MESSAGES
None
PLACARD
Near EICAS display - TAT INOP
OPERATIONS (O)
SAT is available on FMC Progress Page 2/2. The following table may be used to convert SAT to TAT:
 TAT (°C)
SAT (°C) M.50 M.60 M.68 M.70 M.72 M.74 M.76 M.78 M.80 M.82 M.84 M.86
40 56 62 69 70        
35 51 57 64 65 66 68 70     
30 45 52 58 59 61 63 65 67 68 70  
25 40 47 52 54 56 57 59 61 63 64 66 68
20 35 41 47 48 50 51 53 55 57 58 60 63
15 30 36 42 43 44 46 48 49 51 53 55 57
10 24 31 36 37 38 40 43 44 46 47 49 51
5 19 25 31 32 33 35 37 38 40 41 43 45
0 13 20 25 26 28 29 31 33 34 36 38 40
-5 8 14 20 21 22 24 26 27 29 30 32 34
-10 3 9 14 15 17 19 20 22 23 25 26 28
　
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