# SDR SWAA2022111759795

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 13, 2022
- Submitted: November 17, 2022
- Operation: Air carrier
- Aircraft: [N569WN](https://openairdocs.org/aircraft/N569WN), registered now
- Make and model: Boeing 737-7CT
- Registry model: [Boeing 737-7CT](https://openairdocs.org/model/boeing-737-7ct) (OpenAirDocs)
- Aircraft serial: 33656
- Aircraft time: 66,340 hours, 34,395 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Sidewall Support
- Condition: Corroded
- Location: Zn 100 Fus Lower
- 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/SWAA2022111759795

## Discrepancy

CORROSION ON AFT CARGO BAY FLOOR TO SIDEWALL SUPPORT AT LBL 21 BS 727E+6; BS 727E+10; BS 727E+14; BS 747+2; BS 747+6; BS 747+10; BS 747+14; BS 767+3; BS 767+8. / [01] VERIFIED APPLICABILITY SRM 53-60-53-01-2 FOR IDENTIFICATION AND SRM 53-00-53-1A-2 FOR ALLOWABLE DAMAGE.;[02] REMOVED CORROSION ON AFT CARGO BAY FLOOR TO SIDEWALL SUPPORT AT LBL 21 BS 747+6 IAW SRM 51-10-02.<BR><BR>EVALUATED DAMAGE REMOVAL AT BLENDED AREA L=0.300' W=0.300' ORIGINAL THICKNESS 0.040' PER BAC1496-377 REMAINING 0.032' LOSS 0.008'; MAX MAT REMOVE ALLOWABLE 0.004'; FOUND TO BE OUT OF LIMITS IAW SRM 53-00-53-1A-2 PARA 4A (2) FIG 103 DETAIL D.<BR>TOOL ID: ATS1672 S/N: 65092939 DUE:03/2023;[03] VERIFIED CORRECTIVE ACTION STEPS 1 AND 2.;[04] THIS JOB CARD IS COMPLETE ON CUSTOMER CARD [TTG8Q00FFFDR].;[05] VERIFIED ALL STEPS COMPLETE. REMOVAL AND INSTALLATION OF AFT CARGO BAY FLOOR TO SIDEWALL SUPPORT WILL BE COMPLETED ON CUSTOMER CARD TTG8Q00FFFDR;[06] VERIFIED ACTION #5

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