# SDR DALA2023042103151

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 20, 2023
- Submitted: April 22, 2023
- Operation: Air carrier
- Aircraft: [N939DZ](https://openairdocs.org/aircraft/N939DZ), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 38720
- Aircraft time: 27,661 hours, 14,366 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Unknown
- Condition: Unknown
- Location: Unknown
- 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/DALA2023042103151

## Discrepancy

AIRCRAFT 3939, PASSENGER COMPARTMENT, FLOOR SUPPORT HAS CORROSION AT BS. 951, LBL 51. CORRECTIVE ACTION: REMOVED DAMAGED FLOOR SUPPORT FROM PASSENGER COMPARTMENT BS 951 (947-967) LBL 51 WL 208 PER B737 S.R.M 51-40-02-0G AND INSTALLED A NEW FLOOR SUPPORT PER B737 S.R.M 51-40-02-0G AND DWG# 147A5650 REV-A. FOUND CORROSION TO EXCEED 10% MATERIAL LOSS AT STA 951 LBL 51 INTERCOSTAL IAW B737 SRM 53-70-51-1A FIG 103 DET. C. OUT OF LIMITS (LP 2728943)

---
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.