(2)  
Install the end fitting of the inboard lap belt, the crotch strap, and each shoulder harness strap into the rotary buckle.

 S 712-120

 (3)  
Pull on each strap to make sure each end fitting is locked into the rotary buckle.

 S 712-121

 (4)  
Turn the handle on the rotary buckle.

 S 712-122

 (5)  
Make sure the inboard lap belt, the crotch strap, and each shoulder harness strap releases from the rotary buckle.

 (6)
Pull quickly on each shoulder harness strap, one after the other.

 S 712-124

 (7)  
Make sure the inertia reel stops the movement of each shoulder harness strap.

 (8)  
Release the pressure on each shoulder harness strap.

 S 712-126

 (9)  
Make sure the inertia reel releases and retracts each shoulder harness strap.

 S 712-123
 S 712-125
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 25-11-00
 ALL  ú ú 10 Page 209 ú Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 S 712-127
 (10)
 Pull slowly on each shoulder harness strap, one after the other, as far as the strap will go.

 S 712-128

 (11)
 Make sure each shoulder harness strap is not damaged or worn.

 S 712-129

 (12)
 Release the pressure on each shoulder harness strap.

 S 712-130

 (13)
 Make sure each shoulder harness strap retracts smoothly into the inertia reel.

 S 712-131

 (14)
 Pull slowly on each shoulder harness strap, one after the other, as far as the strap will go.

 S 712-132

 (15)
 Move the control lever, for the inertia reel lock, to the locked position.

 S 712-133

 (16)
 Release the pressure slowly on each strap, one after the other so that each strap retracts a small distance.

 S 712-134

 (17)
 Pull on each shoulder harness strap, one after the other.

 S 712-135

 (18)
 Make sure the inertia reel locks the movement of each strap.

 S 712-136

 (19)
 Do steps (16) thru (18) until each shoulder harness strap is retracted fully into the inertia reel.

 S 712-137

 (20)
 Move the control lever, for the inertia reel lock, to the not locked position.

 TASK 25-11-00-202-033
 4. Do an Inspection/Check of the Flight Compartment Seats
______________________________________________________
 A. Access
 (1)  Location Zones
 221 Control Cabin, Left
 222 Control Cabin, Right

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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 ALL  ú ú 05 Page 210 ú Feb 18/01
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A
747-400 MAINTENANCE MANUAL
 B. Procedure
 S 212-138
 (1)  
Make sure the seat cushions and seat base is clean and not damaged.

 S 212-139

 (2)  
Make sure the seat controls are not damaged or broken.

 S 212-140

 (3)  
On the captain and first officer seats, do these steps:

 (a)  
Make sure the seat tracks and the bogie units are clean and are not blocked by loose material.

 (b)  
Make sure the seat tracks and the bogie units are free of cracks, distortion, corrosion, dents and wear.

 (c)  
Make sure the stop blocks are installed on the seat tracks and are not damaged.

 S 212-141
 (4)  Make sure each seat is installed correctly (AMM 25-11-01/401 and AMM 25-11-03/401).
 TASK 25-11-00-822-147
 5. Microswitch Adjustment
______________________
 A. General
 (1)  This task gives the adjustment of the forward and aft microswitches on the captain and first officer's seats.
 B. Access
 (1)  Location Zones
 221 Control Cabin, Left
　
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