# SDR SWAA2022072721332

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 21, 2022
- Submitted: July 28, 2022
- Operation: Air carrier
- Aircraft: [N486WN](https://openairdocs.org/aircraft/N486WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 33852
- Aircraft time: 59,624 hours, 35,506 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Sidewall Support
- Part number: 146A75022
- Condition: Corroded
- Location: Aft Cargo Bay
- 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/SWAA2022072721332

## Discrepancy

CORROSION ON AFT CARGO BAY FLOOR TO SIDEWALL SUPPORT AT RBL 21 BS 727C; BS 727C+2; BS 727C+6; BS 727C+10; BS 727C+14; BS 727C+18; BS 727D+3; BS 727D+7; BS 727D+10; BS 727D+14. / [01] ALL STEPS COMPLETED;[02] VERIFIED STEPS 1-8 ARE OUT OF LIMITS PER SRM 53-00-53-1A-2 STEP 4A(2)(A) FIG 103 AND THE MEASUREMENT TABLE.;[03] CORRECTED MEASUREMENT 19;[04] VERIFIED MEASUREMENT TABLE CORRECTION;[05] DUE TO OUT OF LIMIT STATEMENTS. PART TO BE REPLACE AT DISCREPANCY AREA FROM 727 TO 767 RBL 21 WL 154 ON FAULT TTG8Q00D4W02.;[06] VERIFIED CORRECTIVE ACTION 5; PART REPLACEMENT ON FAULT TTG8Q00D4W02

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