Service difficulty report · Actuator · Bombdr DHC8400

Difficulty date
July 4, 2019
Submitted
August 17, 2020
Operation
General aviation
Make and model
Bombdr DHC8400
Part
Actuator
Part number
C1486591
Condition
Worn
Location
Te Flaps
Part time
37,192 hours
Stage of operation
AP
How discovered
O
Nature of condition
F
Precautionary procedure
O

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

What was found

(CAN) `FLAP DRIVE` CAUTION LIGHT DURING APPROACH, FLAPS STALLED AT AROUND 7. RESET OF L7 `FLAP CONTROL` PERFORMED BY CREW. NO MORE FLAP MOVEMENT WAS POSSIBLE (0 AND 15 TESTED BY CREW). LANDING UNEVENTFUL. FOUND RH FLAP ACTUATOR #1 SPINDLE THREAD WORN (FRETTING) AND ACTUATOR AFTER REMOVAL NOT POSSIBLE TO TURN BY HAND. (TC# 20190705003)