Service difficulty report · Trunnion · Boeing 7478F

Difficulty date
December 18, 2025
Submitted
December 22, 2025
Operation
Air carrier
Aircraft
N607UP
Make and model
Boeing 7478F
Aircraft serial
64265
Aircraft time
32,415 hours, 4,645 cycles
Part
Trunnion
Part number
144U225010
Condition
Corroded
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

RIGHT BODY GEAR INBD TRUNNION OUTBD FACE OF UPPER TRUNNION CAP HAS CORROSION AND DAMAGE WHERE BUSHING SEATS. VERIFIED REPAIRED TO RH BODY GEAR INBD TRUNNION OUTBD FACING OF UPPER TRUNNION CAP IAW SRM 53-40-90 AND GMM 04.02.

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