Service difficulty report · Actuator · Bombdr DHC8402

Difficulty date
November 14, 2018
Submitted
December 13, 2018
Operation
Air carrier
Aircraft
N453QX
Make and model
Bombdr DHC8402
Aircraft serial
4489
Aircraft time
8,716 hours, 9,236 cycles
Part
Actuator
Part number
478301
Part serial
MALNMC0122
Condition
Inoperative
Location
Nlg
Part time
8,716 hours, 9,236 cycles
Stage of operation
CL
How discovered
O
Nature of condition
J
Precautionary procedure
O

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

What was found

UPON GEAR RETRACTION NOSE DOOR AND NOSE UNSAFE LIGHT REMAINED ILLUMINATED APPROXIMATELY 10 SECONDS AFTER MAIN GEAR WIRE UP. FERRIED. REMOVED FROM SERVICE. R+R OF NLG MECHANICAL SEQUINCE VALVE, NLG DOORS SOLENOID SEQUINCE VALVE AND NLG DOORS ACTUATOR. OPERATIONAL TESTS OF THE LANDING GEAR EXTENSION + RETRACTION IS GOOD IAW AMM 32-31-00-710-801. PERFORMED 10 CYCLES OF EXTENSION + RETRACTION, ALL GEAR INDICATIONS ARE NORMAL. AIRCRAFT RETURNED TO SERVICE.