Service difficulty report · Actuator · Boeing 74787UF

Difficulty date
December 7, 2020
Submitted
December 11, 2020
Operation
Air carrier
Aircraft
N853GT
Make and model
Boeing 74787UF
Aircraft serial
37572
Aircraft time
35,446 hours, 5,250 cycles
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

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

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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