# SDR ASAA2026012364091

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 23, 2026
- Submitted: February 20, 2026
- Operation: Air carrier
- Aircraft: [N581AS](https://openairdocs.org/aircraft/N581AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35188
- Aircraft time: 59,926 hours, 17,945 cycles
- System (JASC): [5310 · Fuselage Main, Structure](https://openairdocs.org/jasc/5310)
- Part: Seat Track
- Part number: BAC15202789
- 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/ASAA2026012364091

## Discrepancy

MAIN CABIN,  LBL 45.50,  727I + 14 INCHES, SEAT TRACK CORRODED.   CORROSION LEVEL 1 & NOT MAJOR REPAIR   GROUNDED - YES.  REMOVED CORROSION ON THE SEAT TRACK BS 727I + 14", LBL 45.50. ORIGINAL MATL. THICKNESS ON BOTTOM OF TRACK IS .230", REMOVED .027", REMAINING MATL. THICKNESS .203" AND FOUND TO BE WITHIN LIMITS. ORIGINAL MATL. THICKNESS ON TOP SURFACE OF TRACK IS .146", REMOVED .011", REMAINING MATL. THICKNESS .135" AND FOUND TO BE WITHIN LIMITS IAW B737-800 SRM 53-30-52-01-1, SRM 53-00-52-1A-1, SRM 51-10-02-0G-0 AND BOEING PROPRIETARY BAC 1520-2789 REV:B. TOOL# T8493V, DUE 12DEC26 AND TOOL# T8930P, DUE 01DEC26. PERFORMED 10X DVI, NO DEFECTS NOTED IAW B737-800 SRM 51-10-02-0G-0. RESTORED AREA IAW B737-800 SRM 51-20-01-0G-0 AND SOPM 20-41-04.

---
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.