# SDR DALA2026050702909

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 6, 2026
- Submitted: May 7, 2026
- Operation: Air carrier
- Aircraft: [N585NW](https://openairdocs.org/aircraft/N585NW), registered now
- Make and model: Boeing 757351
- Aircraft serial: 32985
- Aircraft time: 78,886 hours, 26,159 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Intercostal
- Condition: Out Of Limits
- Location: Zone 100
- 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/DALA2026050702909

## Discrepancy

IN REFERENCE NRC 00185: CORROSION OUT OF LIMITS, THICKNESS MEASURE WAS ACOMPLISHED ON INTERCOSTALS BTW STA 1500 TO STA 1521 AND S30-S29L PER B757-300 SRM 53-00-04-1A PROCEDURE 1, NOTE F, DETAIL II.  COROSION LEVEL 2. INTERCOSTALS BTW STA 1500 TO STA 1521 AND S30-S29L WAS REPLACED PER B757-300 SRM 51- 40-02-0G PAR 7, D.(1580815) AIRCRAFT WAS GROUNDED

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.