# SDR CALA2021031200312

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 11, 2021
- Submitted: March 12, 2021
- Operation: Air carrier
- Aircraft: [N77867](https://openairdocs.org/aircraft/N77867), registered now
- Make and model: Boeing 757-33N
- Registry model: [Boeing 757-33N](https://openairdocs.org/model/boeing-757-33n) (OpenAirDocs)
- Aircraft serial: 32592
- Aircraft time: 59,503 hours, 17,360 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Floor Support
- Part number: 141N517056
- Condition: Corroded
- Location: Cabin
- 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/CALA2021031200312

## Discrepancy

B757-53-3-0551 FLOOR SUPPORT BS338 LBL22 HAS CORROSION REF HAE CO GSO NR 9281262 BLENDED AREA ORIGINAL .050" REMOVED .027 REMAINING .023 FOUND TO BE OUT OF LIMITS PER B757-3 SRM 53-00-51 AND BAC 1500-6232. REM OVED AND REPLACED FLOOR SUPPORT PER B757-3 SRM 51-40-02 AND BOEI NG DWG 141N5170 REV C. REF HAECO GSO NR 9281262 HAECO GSO MECH V 932795 INSP QC418 V901877

---
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.