Service difficulty report · Arm · Boeing 737890

Difficulty date
July 22, 2023
Submitted
July 25, 2023
Operation
Air carrier
Aircraft
N581AS
Make and model
Boeing 737890
Aircraft serial
35188
Aircraft time
56,622 hours, 16,867 cycles
Part
Arm
Part number
213A31609
Condition
Corroded
Location
Lh Ram Air Inlet
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

DURING WALK AROUND FOUND IN L/H RAM AIR INLET BOTH LINKS THAT GO FROM TORQUE TUBE TO BLOCKER DOOR TO HAVE CORROSION. GROUNDED - YES. INTIATED MIG 2C 40-0054719,40-0054720 & 40-0054721. REMOVED LH RAM AIR DOOR SHAFT ASSY REF AMM 21-51-22-000-802 PG 43305 07/22/2023. REPLACED LH RAM AIR INLET DEFLECTOR DOOR SHAFT ASSY UP THROUGH STEPS AMM 21-51-22-400-802 5.(E)2. PG 43305 07-22-2023 COMPLETED LH RAM AIR INLET DEFLECTOR SHAFT INSTALL REF MM 21-51-22-400-802. ADJUSTMENT TEST GOOD. MIG 2C # 40-0054719-40-0054721 CLOSED.