Service difficulty report · Bearing Race · Boeing 75724APF

Difficulty date
August 1, 2026
Submitted
August 12, 2026
Operation
Air carrier
Aircraft
N438UP
Make and model
Boeing 75724APF
Aircraft serial
25469
Aircraft time
31,943 hours, 20,896 cycles
Part
Bearing Race
Part number
183N13411
Part serial
RKB1538
Condition
Corroded
Location
Zone 700
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 AFT TRUNNION BEARING RACE HAS PITTING CORROSION ON THE INSIDE. INSTALLED LMLG FWD TRUNNION SUPPORT ASSY IAW AMM 57-54-05-404-001, T/W ID: 21-968. PROCURED AND VERIFIED LT MLG AFT TRUNNION BEARING IS EFFECTIVE ON AIRCRAFT IAW AIPC 57-54-03-02, ITEM 660.

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