# SDR P5CA2020120700391

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 7, 2020
- Submitted: December 11, 2020
- Operation: Air carrier
- Aircraft: [N853GT](https://openairdocs.org/aircraft/N853GT), registered now
- Make and model: Boeing 747-87UF
- Registry model: [Boeing 747-87UF](https://openairdocs.org/model/boeing-747-87uf) (OpenAirDocs)
- Aircraft serial: 37572
- Aircraft time: 35,446 hours, 5,250 cycles
- System (JASC): [3250 · Landing Gear Steering System](https://openairdocs.org/jasc/3250)
- Part: Actuator
- Part number: 1U11715
- Part serial: TLS15052
- Condition: Malfunctioned
- Location: Steering System
- Stage of operation: TO
- How discovered: O
- Nature of condition: J
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/P5CA2020120700391

## Discrepancy

REJECTED TAKE-OFF AT 40 KTS FOR  "CONFIG GEAR CTR" EICAS MESSAGE.  BODY GEAR STEERING RESTORATION, IAW 32-00-00-440-815.  BODY GEAR STEERING BITE VERIFICATION TEST CARRIED OUT, IAW 32-53-16-744-027.  CONFIRMED ALL PRIMARY LOCK SWITCHES LOCK AND UNLOCK ALL BUT RT BODY GEAR RT ALT SWITCH LOCKING AND UNLOCKING SWITCH REMAINS UNLOCKED AT ALL RANGE OF MOVEMENT.  ITEM 2-BODY GEAR STEERING DEACTIVATED, IAW MEL 32-53-01.  TRANSFERRED TO MDDR 138966, CAT C.  REMOVED AND REPLACED BOTH RT ACTUATORS ON BOTH LT AN RT B/G, IAW AMM 32-53-11 (OFF PART: PN 1U1171-5, SN A0131287AVW).  LOCK SWITCHES BIT TEST AND OPERATIONS CHECK NORMAL.  THIS CLEARS MDDR 138966.  T/I SR1231.

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