(3)  
AMM 27-31-00/201 Remove the Pressure from the Elevator Hydraulic Systems A & B

 (4)  
AMM 27-31-00/201 Pressurize the Elevator Hydraulic Systems A & B

 B.  Equipment
 (1)  
Stabilizer Trim Lock Assembly, F71336-501

 (2)  
Flexible Video Borescope with (4) four way articulation, .5 inch (12mm) diameter X 10 feet (3m) long insertion tube with forward and side viewing optical tip adapters.

 (3)  
Flexible Fiberoptic Borescope with (4) four way articulation, .35 inch (8mm) diameter X 3 feet (1m) long insertion tube with forward and side viewing optical tip adapters.

 (4)  
Flexible or rigid guide tube - Dekoron is a trade mark for a formable type metal cored tubing.

 C.  Access
 (1)  Location Zones
 708 Rudder
 709 Left Horizontal Stabilizer
 710 Right Horizontal Stabilizer
 711 Left Elevator
 712 Right Elevator

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A
737-300/400/500MAINTENANCE MANUAL
 (2)  Access Panels
 9507L Rudder
 9512L Rudder
 9515L Rudder
 9516L Rudder
 9517L Rudder
 9536L Rudder
 9538L Rudder
 9518L Rudder
 9568L Rudder
 9567R Rudder
 9821 Rudder
 9819 Rudder

 9112L Horizontal Stabilizer
 9111L Horizontal Stabilizer
 9110L Horizontal Stabilizer
 9109L Horizontal Stabilizer
 9108L Horizontal Stabilizer
 9107L Horizontal Stabilizer
 9106L Horizontal Stabilizer
 9105L Horizontal Stabilizer
 9212R Horizontal Stabilizer
 9211R Horizontal Stabilizer
 9210R Horizontal Stabilizer
 9209R Horizontal Stabilizer
 9208R Horizontal Stabilizer
 9207R Horizontal Stabilizer
 9206R Horizontal Stabilizer
 9205R Horizontal Stabilizer

 D. Procedure
 S 046-022-B00
 WARNING:  DEPRESSURIZE THE RUDDER, ELEVATORS, AND HORIZONTAL STABILIZER. PRESSURE IN THESE HYDRAULIC SYSTEMS CAN ALLOW COMPONENTS TO BE MOVED SUDDENLY BY ANOTHER PERSON. THIS CAN CAUSE INJURIES TO PERSONS AND DAMAGE TO THE EQUIPMENT.
 (1)  Remove the pressure from systems A and B for the rudder, (AMM 27-21-00/201).
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
 (2)  S 046-010-B00Remove the pressure from the elevators, (AMM 27-31-00/201).
 (3)  S 866-021-B00Set the stabilizer trim cutout switches to CUTOUT.
 (4)  S 046-013-B00Open these circuit breakers and attach DO-NOT-CLOSE tags: (a) P6 Circuit Breaker Panel 1) STABILIZER TRIM ACTUATOR 2) STABILIZER TRIM CONT (b) P18 Circuit Breaker Panel 1) AUTOPILOT STABILIZER TRIM SERVO
 (5)  S 046-014-B00Use the stabilizer trim wheel on the control stand to set the horizontal stabilizer at zero degrees (3 units of trim).
 (6)  S 046-015-B00Install the trim lock assembly, F71336-501, on the stabilizer trim wheel. (a) Turn the trim wheel to put the handle at the top of the wheel. (b) Adjust the height of the trim lock to set the trim wheel handle tightly in the bottom of the yoke. (c) Install the pin through the yoke and install the safety pin.
 (7)  S 016-008-B00Remove the access panels that are necessary.
 (8)  S 296-002-B00Put the borescope tube into an access hole that is 2 inches in diameter.
 (9)  S 296-003-B00Move the borescope tube until you can see an area where an inspection is necessary.
 NOTE:____ If you can not move the optical tip into the correct areas, use a guide tube.

 S 296-004-B00
 (10) Examine the area for these unsatisfactory conditions:
 NOTE: Do not move the borescope tube while you examine an area.
　
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