# SDR SWAA2021081895047

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 14, 2021
- Submitted: August 18, 2021
- Operation: Air carrier
- Aircraft: [N444WN](https://openairdocs.org/aircraft/N444WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 29839
- Aircraft time: 61,121 hours, 35,983 cycles
- System (JASC): [5347 · Fuselage, Seat/Cargo Attach Fittings](https://openairdocs.org/jasc/5347)
- Part: Cargo Track
- Condition: Corroded
- Location: Bs 754
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2021081895047

## Discrepancy

CORROSION ON RAIL AT AFT CARGO BAY BS754 RBL3 WL156. ; / [01] CORROSION ON RAIL AT AFT CARGO BAY BS754 RBL3 WL156 IS OUT OF LIMITS DUE TO FASTENER HOLE PROXIMITY TO CORROSION PER SRM 53-00-53-1A-2 FIG. 103 DETAIL D; [02] UPDATED MEASUREMENTS; [03] CUTOUT DAMAGE:2.3'X.75' PER SRM51-10-02; [04] VERIFIED CORRECTIVE ACTION #3; [05] ACCOMPLISHED HFEC SURFACE SCAN INSP. TO AFT CARGO FLOOR RAIL CUTOUT AREA IAW B737 NDTM P6; 51-00-00 PROC 23. NO CRACKS NOTED. TOOL ID ATS1465; N600; [06] CUTOUT DAMAGE SECTION AT B.S. 754; 2.45' LENGTH PER SRM53-00-53-2R-2; [07] INSPECTED CUTOUT DAMAGE SECTION AT B.S. 754; 2.45' LENGTH PER SRM53-00-53-2R-2; [08] FABRICATED REPAIR CHANNEL BAC 1509-100146 <BR>7050-T76511<BR>LOT#1464335-1; [09] FABRICATED REPAIR CHANNEL BAC 1509-100146 <BR>7050-T76511<BR>LOT#1464335-1<BR>REPAIR SPLICES<BR>53100004-001<BR>BN 110233;

---
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.