Service difficulty report · Retainer · Boeing 75724APF

Difficulty date
July 26, 2026
Submitted
August 18, 2026
Operation
Air carrier
Aircraft
N438UP
Make and model
Boeing 75724APF
Aircraft serial
25469
Aircraft time
31,943 hours, 20,896 cycles
Part
Retainer
Part number
113N820021
Part serial
NSN
Condition
Cracked
Location
Zone 100
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

LEFT MLG FWD TRUNNION FAIRING DOOR ASSY HAS A CRACKED SEAL RETAINER. LOCATED AND DRILLED NEW SEAL RETAINER AT LT MLG FWD TRUNNION FAIRING DOOR ASSY IAW SRM 51-40-05-0G-0.

More about the Boeing 757-24APF