# SDR SWAA2021090300908

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 1, 2021
- Submitted: September 3, 2021
- Operation: Air carrier
- Aircraft: N7839A
- Make and model: Boeing 737-73V
- Registry model: [Boeing 737-73V](https://openairdocs.org/model/boeing-737-73v) (OpenAirDocs)
- Aircraft serial: 30243
- Aircraft time: 57,802 hours, 35,522 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Support
- Part number: 143A750180
- Condition: Corroded
- Location: Fwd Cargo
- 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/SWAA2021090300908

## Discrepancy

CORROSION ON FCB L/H FLOOR-TO-SIDEWALL SUPPORT; BS 460+12; LBL 24; WL 156 (MARKED) ; / [01] VEREFIED APPLICABILITY OF SRM 53-30-53-0I-2 FOR IDENTIFICATION AND SRM 53-00-53-1A-2 FOR ALLOWABLE DAMAGE; [02] REMOVED CORRISION FROM FCB L/H FLOOR-TO-SIDEWALL SUPPORT; BS 460+12; LBL 24; WL 156. P/N 143A7501-80; IN AREA 0.7' X 0.5' X 0.021' DEEP; ORIGINAL THICKNESS 0.040' FOUND TO BE OUT OF LIMITS IAW SRM 53-00-53-1A-2 PER 4.A(2) FIG. 103 DETAIL A <BR>TOOL USED <BR>-DEPTH GAGE <BR>ID:ATS2472. S/N: UNKNOWN. DUE DATE: 06/2022; [03] VERIFIED REMOVED CORRISION FROM FCB L/H FLOOR-TO-SIDEWALL SUPPORT; BS 460+12; LBL 24; WL 156. P/N 143A7501-80; IN AREA 0.7' X 0.5' X 0.021' DEEP; ORIGINAL THICKNESS 0.040' FOUND TO BE OUT OF LIMITS IAW SRM 53-00-53-1A-2 PER 4.A(2) FIG. 103 DETAIL A.; [04] PART WAS FOUND TO BE OUT OF LIMITS. REMOVAL OF FLOOR TO SIDEWALL SUPPORT WAS ACCOMPLISHED ON CUSTOMER CARD: TTG8Q004G1EL STEP 11 AND WILL BE FABRICATED AND INSTALLED ON CUSTOMER CARD: TTG8Q0060HB5; [05] VERIFIED FLOOR TO SIDEWALL SUPPORT WAS ACCOMPLISHED ON CUSTOMER CARD TTG8Q004G1EL STEP 11 AND WILL BE FABRICATED AND INSTALLED ON CUSTOMER CARD: TTG8Q0060HB5

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