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 ALL  ú ú 01 Page 527 ú Feb 10/97
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 (h)  Remove the actuator from the sensor, S398 (left wing gear
 up/lock sensor).
 (i)  Put a rectangular deactuator on the sensor, S401 (left body
 gear down/lock sensor).
 (j)  Make sure the CDU display of label 270/00 is shown as follows:
 ~............................................................
 | Sensor and Bit Location | Bit State | Description |
 ..............................................................
 |L Body Gear Down/Lock on Bit 11 | 0 |NOT DOWN |
 ..............................................................
 |L Wing Gear Down/Lock on Bit 12 | 1 |GEAR DOWN |
 ..............................................................
 |R Wing Gear Down/Lock on Bit 13 | 1 |GEAR DOWN |
 ..............................................................
 |R Body Gear Down/Lock on Bit 14 | 1 |GEAR DOWN |
 ..............................................................
 |L Body Gear Up/Lock on Bit 15 | 0 |NOT UP |
 ..............................................................
 |L Wing Gear Up/Lock on Bit 16 | 0 |NOT UP |
 ..............................................................
 |R Wing Gear Up/Lock on Bit 17 | 0 |NOT UP |
 ..............................................................
 |R Body Gear Up/Lock on Bit 18 | 0 |NOT UP |
 2.................................…............….............1
 (k)  Remove the deactuator from the sensor, S401 (left body gear
 down/lock sensor).
 (l)  Put a circular actuator on the sensor, S400 (left body gear
 up/lock sensor).

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 32-61-00
 ALL  ú ú 01 Page 528 ú Feb 10/97
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
 (m)

(n)

(o)

(p)

A
747-400 MAINTENANCE MANUAL
Make sure the CDU display of label 270/00 is shown as follows:
 ~............................................................ | Sensor and Bit Location | Bit State | Description | .............................................................. |L Body Gear Down/Lock on Bit 11 | 1 |GEAR DOWN | .............................................................. |L Wing Gear Down/Lock on Bit 12 | 1 |GEAR DOWN | .............................................................. |R Wing Gear Down/Lock on Bit 13 | 1 |GEAR DOWN | .............................................................. |R Body Gear Down/Lock on Bit 14 | 1 |GEAR DOWN | .............................................................. |L Body Gear Up/Lock on Bit 15 | 1 |GEAR UP | .............................................................. |L Wing Gear Up/Lock on Bit 16 | 0 |NOT UP | .............................................................. |R Wing Gear Up/Lock on Bit 17 | 0 |NOT UP | .............................................................. |R Body Gear Up/Lock on Bit 18 | 0 |NOT UP | 2.................................…............….............1
Remove the actuator from the sensor, S400 (left body gear
 up/lock sensor).
Put a rectangular deactuator on the sensor, S403 (right body
 gear down/lock sensor).
Make sure the CDU display of label 270/00 is shown as follows:

 ~............................................................ | Sensor and Bit Location | Bit State | Description | .............................................................. |L Body Gear Down/Lock on Bit 11 | 1 |GEAR DOWN | .............................................................. |L Wing Gear Down/Lock on Bit 12 | 1 |GEAR DOWN | .............................................................. |R Wing Gear Down/Lock on Bit 13 | 1 |GEAR DOWN | .............................................................. |R Body Gear Down/Lock on Bit 14 | 0 |NOT DOWN | .............................................................. |L Body Gear Up/Lock on Bit 15 | 0 |NOT UP | .............................................................. |L Wing Gear Up/Lock on Bit 16 | 0 |NOT UP | .............................................................. |R Wing Gear Up/Lock on Bit 17 | 0 |NOT UP | .............................................................. |R Body Gear Up/Lock on Bit 18 | 0 |NOT UP | 2.................................…............….............1
　
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