# SDR IPXA2026080872397

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 1, 2026
- Submitted: August 12, 2026
- Operation: Air carrier
- Aircraft: [N438UP](https://openairdocs.org/aircraft/N438UP), registered now
- Make and model: Boeing 757-24APF
- Registry model: [Boeing 757-24APF](https://openairdocs.org/model/boeing-757-24apf) (OpenAirDocs)
- Aircraft serial: 25469
- Aircraft time: 31,943 hours, 20,896 cycles
- System (JASC): [5743 · Wing, Landing Gear Attach Fittings](https://openairdocs.org/jasc/5743)
- 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
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/IPXA2026080872397

## Discrepancy

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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