Service difficulty report · Actuator · Boeing 737890

Difficulty date
July 31, 2019
Submitted
August 3, 2019
Operation
Air carrier
Aircraft
N518AS
Make and model
Boeing 737890
Aircraft serial
35693
Aircraft time
39,840 hours, 11,851 cycles
Part
Actuator
Part number
5416744
Part serial
187277
Condition
Failed
Location
Ram Air Exhaust
Part time
63,644 hours, 31,000 cycles
Stage of operation
IN
How discovered
V
Nature of condition
O
Precautionary procedure
K

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

What was found

UPON ETOPS EXTERIOR WALK FOUND R/H RAM DOOR FULL CLOSED. GROUNDED - YES. PERFORMED PACK ZONE TEMP CONTROL BITE PER B737-800 AMM 21-61-00-700-806-002. R/H RAM AIR DOOR ACTUATOR IS BAD. REMOVED RAM AIR DOOR ACTUATOR PER AMM 21-51-21-000-801. INSTALLED RAM AIR DOOR ACTUATOR PER AMM 21-51-21-400-801. INSTALLED / REMOVED 3 MIG 51A TAGS PERFORMED RAM AIR ACTUATOR TEST PER AMM SUBTASK 21-51-21-740-001 ACTUATOR TEST PASSED.