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时间:2011-04-21 08:06来源:蓝天飞行翻译 作者:航空
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A
757 MAINTENANCE MANUAL
 S 285-019
 (2)  Make sure the EICAS message WARN ELEX shows. S 845-105
 WARNING:_______ MAKE SURE THE ENGINE FAN COWLS ARE CLOSED BEFORE OPERATION OF
 STALL WARNING TEST SWITCHES.  OPERATION OF STALL WARNING TEST
 SWITCHES CAN CAUSE THE SLATS TO MOVE TO THEIR FULLY EXTENDED
 POSITION.  MOVEMENT OF THE SLATS CAN CAUSE INJURY TO PERSONS OR

 DAMAGE TO EQUIPMENT TO OCCUR.
 (3)  
Make sure the left and right fan cowls are closed (Ref 71-11-04/201).

 S 985-020

 (4)  
Hold down the LEFT and RIGHT STALL TEST switches on the P61 panel.

 S 285-021

 (5)  
Make sure you find these conditions:

 (a)  
The L and R stick shakers shake the columns.

 (b)  
The Windshear PLI shows on the L and R EADI's.

 (c)  
The EICAS message WARN ELEX shows.

 (d)  
All segments of LEFT STALL and RIGHT STALL hex displays come on, on the WEU BITE module (P51).


 S 865-022
 (6)  
Close the circuit breaker below on the P11 panel:

 (a)  
11J33, WARN ELEX A


 S 865-023
 (7)  
Open this circuit breaker on the P11 panel:

 (a)  
11B18, WARN ELEX B


 S 285-024
 (8)  
Make sure the stick shakers still shake the columns.

 S 985-026

 (9)  
Release the R STALL TEST switch.

 S 285-025

 (10)
 Make sure you find these conditions:

 (a)  
The R stick shaker stops.

 (b)  
The Windshear PLI does not show on the R EADI.

 (c)  
All segments of the LEFT STALL hex display on the WEU BITE Module (P51) stay on, and the RIGHT STALL hex display shows the code D9.

 (11)
 Release the L STALL TEST switch.


 S 985-025
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 27-32-00
 ALL  ú ú 02A Page 510 ú Sep 20/98
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

757
MAINTENANCE MANUAL

 S 285-027
 (12)
 Make sure you find these conditions:

 (a)  
The L stick shaker stops.

 (b)  
The Windshear PLI does not show on the L EADI.

 (c)  
The LEFT STALL and RIGHT STALL hex displays on the WEU BITE Module show the code 4F.


 S 865-117
 (13)
 Close this circuit breaker on the P11 panel:

 (a)  
11B18, WARN ELEX B


 S 285-179
 (14)
 Make sure the EICAS message WARN ELEX does not show.

 G.
Do a Test of the Stall Warning System Interface


 S 285-026
 (1)  
Make sure the Captain's and First Officer's IRS Source Select switches are in the usual position (ALTN legend is not displayed).

 S 985-027

 (2)
Put the L, C, and R IRS Mode Select switches in the OFF position.

 S 285-028

 (3)  
Make sure the LEFT and RIGHT STALL hex displays on the WEU BITE Module (P51) show the code D6.

 S 985-029

 (4)  
Put the Left and Right IRS Mode Select switches in the NAV position, and wait until the Left and Right IRS ALIGN lights are OFF.

 S 285-030

 (5)  
Make sure the LEFT and RIGHT STALL hex displays on the WEU BITE Module (P51) show the code 4F.


 NOTE: It can be up to 10 seconds before the code is shown.
____
 S 985-033
 (6)
Put the Captain's IRS Source Select switch in the ALTN position.

 S 285-032

 (7)  
Make sure the LEFT STALL hex display on the WEU BITE Module (P51) shows the code D6.

 S 985-036

 (8)  
Put the CENTER IRS Mode Select switch in the NAV position, and wait until the CENTER IRS ALIGN light is OFF.


 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 27-32-00
 ALL  ú ú 02A Page 511 ú Sep 20/98
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
 
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