S 712-096

 (8)  
Release the seat recline lever.

 S 712-097

 (9)
Make sure the seat back cushion is locked in the middle position.

 K. Do this thigh support test for the captain and first officer seats.
 S 712-098
 (1)  
Operate the control handwheel, for thigh pad adjustment, to move the thigh pads up and down.

 S 712-099

 (2)  
Make sure the thigh pads move up and down smoothly.

 S 712-100

 (3)  
Make sure the thigh pads move down when the control handwheel is moved forward.

 S 712-101

 (4)  
Operate the control handwheel to move the thigh pads to the middle position.

 (5)  
Push down to apply pressure to the top of each thigh pad.

 (6)  
Make sure each thigh pad moves down against spring pressure.

 (7)  
Release the pressure you applied to the thigh pads.

 (8)
Make sure each thigh pad moves freely back to the middle position.

 S 712-102
 S 712-103
 S 712-104
 S 712-105
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 25-11-00
 ALL  ú ú 08 Page 207 ú Feb 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 L. Do this armrest test for each flight compartment seat.
 S 712-106
 (1)  
Operate the control knob, for armrest adjustment, to move the armrest to the lowest position.

 S 712-107

 (2)  
Make sure the armrest does not move down when you push down on the armrest.

 S 712-108

 (3)  
Operate the control knob to move the armrest to the highest
 position.

 S 712-109

 (4)  
Make sure the armrest moved up 6 inches as measured from the forward end of the armrest.

 S 712-110

 (5)  
Make sure the armrest does not move down when you push down on the armrest.

 S 712-111

 (6)  
Lift the armrest to the vertical position and move it to the center of the seat back cushion.

 S 712-112

 (7)  
Make sure the armrest stays next to the seat back cushion in the vertical position.

 M. Do this lumbar support test for each flight compartment seat.
 S 712-113
 (1)  
Operate the control handwheel, for lumbar support in and out adjustment, to move the seat back cushion forward and aft.

 S 712-114

 (2)  
Make sure the seat back cushion moves 1.5 inches from the most forward to the most aft position.

 S 712-115

 (3)  
Operate the control handwheel, for lumbar support up and down adjustment, to move the seat back cushion up and down.

 S 712-116

 (4)  
Make sure the seat back cushion moves 2.8 inches from the lowest to the highest position.

 S 712-117

 (5)  
Make sure the seat back cushion is locked in place when you release the control handwheel.

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 25-11-00
 ALL  ú ú 08 Page 208 ú Feb 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 712-142
 (6)  Do the Operation Test of the Crew Restraint System task.
 TASK 25-11-00-702-143
 3.  Do an Operational Test of the Crew Restraint System___________________________________________________
 A. General
 (1)  
The function of this task is to make sure the crew restraints on the flight compartment seats operate correctly.

 (2)  
Do this crew restraint/shoulder harness test for each flight compartment seat.

 B. Access
 (1)  Location Zones
 221 Control Cabin, Left
 222 Control Cabin, Right

 C. Procedure
 S 712-118
 (1)  
Make sure the control lever, for the inertia reel lock, is not in the locked position.

 S 712-119
　
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