# SDR UIEA2026013000026

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 5, 2026
- Submitted: February 9, 2026
- Operation: Air carrier
- Aircraft: [N439GT](https://openairdocs.org/aircraft/N439GT), registered now
- Make and model: Boeing 747409F
- Aircraft serial: 30767
- Aircraft time: 99,231 hours, 18,065 cycles
- System (JASC): [5343 · Fuselage, Landing Gear Attach Fittings](https://openairdocs.org/jasc/5343)
- Part: Trunnion
- Condition: Corroded
- Location: Zone 700
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2026013000026

## Discrepancy

CORROSION ON LT NLG TRUNNION BEARING CAP INBD SIDE.  BLENDED OUT CORROSION ON THE LT NLG TRUNNION BEARING CAP INBD SIDE FACE AREA, WITHIN LIMITS. TREATED AREA PROTECTIVE FINISH ON BLENDED AREA IAW SRM 53-10-90-2R-1, REPAIR 1, FIG 201, DETAIL II. NO FURTHER DEFECTS NOTED.

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