Service difficulty report · Rotary Actuator · Boeing 7474KZF

Difficulty date
July 26, 2022
Submitted
July 26, 2022
Operation
Air carrier
Aircraft
N508KZ
Make and model
Boeing 7474KZF
Aircraft serial
36135
Aircraft time
45,754 hours, 8,650 cycles
Part
Rotary Actuator
Part number
1387T10011
Part serial
TLS28092
Condition
Failed
Stage of operation
IN
How discovered
V
Nature of condition
O
Precautionary procedure
O

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

What was found

FUNCTION FAIL - DUE TO RH BLG ALTERNATE EXTENSION SYSTEM TEST, FOUND THE RH BLG ROTARY ACTUATOR ROTATION ACTION CAN NOT STOP(1) IAW AMM 32-35-01-004-001 REV 104 AND AMM 32-35-01-404-007 REV 104, STEP 3.A TO 3.F (1), REMOVE AND REPLACE RH BLG ROTARY ACTUATOR. 2) IAW AMM 32-51-01-404-007 REV 104 STEP F (2) TO F (6) PERFORM OPS TEST OF THE ALTERNATE EXTENSION SYSTEM OF THE RH BLG, TEST RESULT WAS GOOD. 3) CONDITION CHECK NORMAL</P>)

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