# SDR DALA2026021801141

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 17, 2026
- Submitted: February 18, 2026
- Operation: Air carrier
- Aircraft: [N584NW](https://openairdocs.org/aircraft/N584NW), registered now
- Make and model: Boeing 757351
- Aircraft serial: 32984
- Aircraft time: 79,077 hours, 26,068 cycles
- System (JASC): [5310 · Fuselage Main, Structure](https://openairdocs.org/jasc/5310)
- Part: Box Beam
- Condition: Corroded
- Location: Zone 200
- 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/DALA2026021801141

## Discrepancy

CORROSION OUT OF LIMITS. IN REF NRC 423: CORROSION ON BOX BEAM BTW STA 1660-1680 AND LBL 55 AT PASSENGER CABIN IS OUT OF LIMITS PER B757-300 SRM 53-00-51-1A PROCEDURE 1 AD 1. FIG. 101 DETAIL VI SECTION B-B.   NEW BOX BEAM WAS REPLACED ON BTW STA 1660- 1680 AND LBL 55 AT PASSENGER CABIN PER B757-300 SRM 51-40-02-0G PAR 7 (D), CORROSION LEVEL 2. (1455344)

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