Service difficulty report · Guide Arm · Boeing 737990ER

Difficulty date
December 25, 2025
Submitted
December 26, 2025
Operation
Air carrier
Aircraft
N457AS
Make and model
Boeing 737990ER
Aircraft serial
36355
Aircraft time
42,746 hours, 13,456 cycles
Part
Guide Arm
Condition
Lack Of Lube
Location
Zone 800
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

FOLLOW UP TO REPORTS OF L-2 DOOR HARD TO OPEN. ACCOMPLISH FIM 52-10 TASK 807 TO SEE WHAT IS CAUSING L-2 DOOR HARD TO OPEN. GROUNDED - YES. WHILE PERFORMING FIM 52-10 TASK 807, FOUND CONDENSATION ON L2 DOOR FRAME, ROLLER BEARINGS, GUIDE ARM GUIDE PLATE & EXTERIOR DOOR HANDLE ACTUATING ROD. ALSO FOUND NO LUBRICATION ON GUIDE ARM GUIDE PLATE & EXTERIOR DOOR HANDLE ACTUATING ROD. SUSPECT CONDENSATION IS FREEZING MAKING DOOR HARD TO OPEN. ALSO FOUND JAM NUT ON GUIDE ARM LOOSE. COMPLETED AFT ENTRY DOOR LUBRICATION PER AMM 12-25-12-640-801 & RETORQUED GUIDE ARM JAM NUT PER AMM 52-13-00-820-801. OPS CHECK GOOD. THIS CLEARS TSR 718654.