Service difficulty report · Actuator · Boeing 737890

Difficulty date
July 25, 2021
Submitted
July 28, 2021
Operation
Air carrier
Aircraft
N531AS
Make and model
Boeing 737890
Aircraft serial
35199
Aircraft time
39,516 hours, 11,481 cycles
Part
Actuator
Part number
5416744
Part serial
584199
Condition
Faulted
Location
Ram Air Inlet
Part time
17,876 hours, 6,311 cycles
Stage of operation
NR
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

RT PACK CAUTION ILLUM AFTER RECALL. GROUNDED - YES. VERIFIED FAULT, ACCOMP PACK/ZONE TEMP CONT BITE ON BOTH CONT. #1 NO FAULTS. #2 FAULTS RAM AIR ACTR REF B737-800 AMM 21-61-00-700-806-0032. RH RAM AIR DOOR ACTUATOR REMOVED AND REPLACED REF B737-800 AMM 21-51-21. INSTALLATION TESTS GOOD AND NO FAULTS ON PZTC.