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时间:2011-04-17 09:20来源:蓝天飞行翻译 作者:航空
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 (1)  The data that follows applies to a severe or unusual turbulence condition.
 (a)  The pilot must make a decision if a structural inspection is necessary.
 NOTE: If an inspection is necessary, refer to the "Examine the
____ Airplane Structure" in this section.
 NOTE: Severe turbulence is identified as turbulence which
____ causes large, abrupt changes in the altitude and/or attitude. The airplane could be out of control for short periods. It usually causes large variations in airspeed. Passengers and crew are moved violently against their seat belts and loose objects are moved around the airplane.
 (b)  The flight vertical load acceleration limits that follow are specified in the FAA Flight Manual, Section I. If these flight maneuvering vertical load acceleration limits are exceeded, refer to the Examine Airplane Structure procedure in this section. 1) Flaps up . . . . . . . . . . . . . . . . . 2.5g to -1.0g 2) Flaps down . . . . . . . . . . . . . . . . 2.0g to 0.0g
 NOTE: These flight maneuvering vertical load
____ acceleration limits are not directly applicable to severe or unusual turbulence. Severe or unusual turbulence inspections may be required for conditions that do not exceed these limits.
 B.  The data that follows applies to a stall or severe/unusual buffet condition:
 (1)  
If an unusual maneuver or a severe or unusual buffet condition occurs in flight, do the Examine Airplane Structure in this section. Also do this examination if an unusual vibration occurs in flight.

 (2)  
If a stall occurs after the initial buffet or stick shaker condition, a part of the structural examination is necessary. Do the examination in the Stall (After initial buffet or stick shaker) Examination procedure in this section.


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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

757
MAINTENANCE MANUAL

 C.  The data that follows applies to airplane speeds greater than the design speeds:
 (1)  
The maximum design speed of the airplane for usual flight operations is the Maximum Operating Speed. The Maximum Operating Speed is found in Section 1, LIMITATIONS of the airplane Flight Manual. The aural warning horn will operate at this speed condition.

 (2)  
If the airplane speed is 20 knots, or more than the Maximum Operating Speed (20 knots above Vmo or 0.02 mach above Mmo), do the Examine Airplane Structure procedure in this section.


 TASK 05-51-04-212-019
 2.  Examine Airplane Structure__________________________
 A.  References
 (1)  
05-51-10/201, Dragged Engine Nacelle/Engine Seize and Strut Damage

 (2)  
27-11-00, Ailerons

 (3)  
27-21-00, Rudder

 (4)  
27-31-00, Elevators

 (5)  
27-51-00, Trailing Edge Flaps

 (6)  
27-61-00, Spoiler and Drag Devices

 (7)  
27-81-00, Lift Augmentation


 B.  Procedure
 S 862-002
 WARNING: DO THE DEACTIVATION PROCEDURE FOR THE FLAP/SLAT ACTUATION
_______ SYSTEMS. INJURY TO A PERSON OR DAMAGE TO EQUIPMENT CAN OCCUR IF THE FLAPS/SLATS MOVE. FLAP/SLAT ACTUATION SYSTEMS MUST NOT BE OPERATED DURING THIS INSPECTION. FAILURE TO OBEY CAN CAUSE INJURY TO PERSONS.
 (1)  
Do the deactivation procedure for the trailing edge flap system (Ref 27-51-00).

 S 862-003

 (2)  
Do the deactivation procedure for the leading edge slat system (Ref 27-81-00).

 S 212-004

 (3)  
Do the examinations that follow:

 (a)  
Examine the external surface of the lower keel beam below the wing for distortion, paint that has flaked, and for cracks. Also look for fasteners that have pulled out or are not there.

 (b)  
Examine the fuselage area above the trailing edge part of the wing (aft of the wing rear spar) for distortion, paint that has flaked, and for cracks. Also look for fasteners that have pulled out or are not there.

 


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 05-51-04
 
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