# SDR UALA2013031401529

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 14, 2013
- Submitted: March 20, 2013
- Operation: Air carrier
- Aircraft: N521UA
- Make and model: Boeing 757222
- Aircraft serial: 24891
- Aircraft time: 73,083 hours, 27,199 cycles
- Engine: Pwa PW2037
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Channel
- Part number: 00000
- Part serial: 0000
- Condition: Corroded
- Location: Bs 345-365
- 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/UALA2013031401529

## Discrepancy

BS 345-365 RBL 60 HAT CHANNEL UPPER AND LOWER SURFACE CORRODED.   HAT CHANNEL WAS FOUND WITH 100% MATERIAL LOSS.  REMOVED AND REPLACED HAT CHANNEL IAW SRM 51-40-02 & DWG 141N5160. MAJOR REPAIR.

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