(a)  
7F23 LANDING GEAR DSP & CONT ALTN

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 32-61-00
 ALL  ú ú 01 Page 525 ú Jun 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 (b)  7F26 PSEU SECT 2
 S 745-055
 (3)  
Do a test of the body and wing gear, uplock and downlock position indication:

 (a)  
Push the PREVIOUS PAGE button on the CDU as necessary to show the logic conditions of label 270/00.

 (b)  
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 | 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

 (c)  
Put a rectangular deactuator on the sensor, S399 (left wing gear down/lock sensor).

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 32-61-00
 ALL  ú ú 01 Page 526 ú Feb 10/97
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
 (d)

(e)

(f)

(g)

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 | 0 |NOT 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
Remove the deactuator from the sensor, S399 (left wing gear
 down/lock sensor).
Put a circular actuator on the sensor, S398 (left wing gear
 up/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 | 1 |GEAR DOWN | .............................................................. |L Body Gear Up/Lock on Bit 15 | 0 |NOT UP | .............................................................. |L Wing Gear Up/Lock on Bit 16 | 1 |GEAR 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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本文鏈接地址：747-400 AMM 飛機(jī)維護(hù)手冊(cè) 起落架 LANDING GEAR 9(39)