Service difficulty report · Actuator · Boeing 737990ER

Difficulty date
March 17, 2019
Submitted
March 19, 2019
Operation
Air carrier
Aircraft
N423AS
Make and model
Boeing 737990ER
Aircraft serial
35206
Aircraft time
23,285 hours, 7,648 cycles
Part
Actuator
Part number
5416744
Part serial
16406
Condition
Failed
Location
Ram Air Inlet
Part time
24,363 hours, 7,966 cycles
Stage of operation
DE
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

AT TOD WHEN CHECKING RECALL LEFT PACK LIGHT ILLUMINATED. HOWEVER RESET WITH MASTER CAUTION RESET. GROUNDED - YES. REMOVED AND REPLACED LEFT RAM AIR DOOR ACTUATOR W/NEW REF AMM 21-51-21-000-801 & AMM 21-51-21-400-801. BONDING CHECK IS GOOD REF AMM 21-51-21. RAM AIR INLET ACTUATOR TEST OK.