# SDR SWAA2022020458243

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 5, 2022
- Submitted: February 4, 2022
- Operation: Air carrier
- Aircraft: [N452WN](https://openairdocs.org/aircraft/N452WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 29846
- Aircraft time: 60,081 hours, 35,724 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Attach Fitting
- Part number: 147A750114
- Condition: Corroded
- Location: Aft Cargo Bay
- Stage of operation: UK
- 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/SWAA2022020458243

## Discrepancy

AFT CARGO FLOOR AREA BS 907 RT RAIL HAS CORROSION AT NET ATTACH FITTING. REMOVED CORROSION IAW SRM 51-10-02-0G-0.   PERFORMED UT THICKNESS INSP ON REWORKED AREA IAW NDT P4 51-00-00 PROC.3,   PERFORMED EVALUATION WITH UT THICKNESS AT REWORKED AREA AND ADJACENT STRUCTURE. IAW NDT PART 4 51-00-00 PROCE 3.  MIN THICK 0.048'.  ORIGINAL MATERIAL THICKNESS 0.070'.   FOUND OUT OF LIMITS IAW SRM 53-00-53-1A-2. FIG. 103; DETAIL G.; [06] ADDING TO STEP 1.  REMOVED  RT TRACK -NET ATTACH FITTING IAW SRM 51-40-02-0G-0.  REPLACEMENT OF RT TRACK-NET ATTACH FITTING WILL BE ACCOMPLISH ON TASK TTG8Q00A4AA4.

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