# SDR DALA2019100425712

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 1, 2019
- Submitted: October 4, 2019
- Operation: Air carrier
- Aircraft: [N539US](https://openairdocs.org/aircraft/N539US), registered now
- Make and model: Boeing 757251
- Aircraft serial: 26486
- Aircraft time: 71,392 hours, 26,976 cycles
- System (JASC): [5311 · Fuselage Main, Frame](https://openairdocs.org/jasc/5311)
- Part: Frame
- Condition: Dented
- Location: Bs 1600
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2019100425712

## Discrepancy

(AIRCRAFT 5639, L/P 1295557) DENT FOUND IN AFT CARGO ON LOWER FRAME STA 1600 LH AT APPROX STR 25. CUT OUT DAMAGED AREA AT STA 1600 BTW STR 25 & 26 L/H IAW B757 SRM 53-00-07 REP 5 DETAIL III FABRICATED FRAME REPAIR IAW B757 SRM 53-00-07 REP 5 INSTALLED FRAME REPAIR AND 3 EA STRINGER CLIPS AT STA 1600 BTW STR 24 L TO 26L IAW B757 SRM 53-00-07 REP 5 DETAIL III INSPECTION THRESHOLD IS ZONE 1 CATAGORY B REPAIR 37,500 FLIGHT CYCLES AFTER REPAIR INSTALLATION OR 50,000 AIRFRAME FLIGHT CYCLES WHICH EVER COMES FIRST.

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