# SDR SWAA2023122936245

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 7, 2023
- Submitted: December 29, 2023
- Operation: Air carrier
- Aircraft: N7845A
- Make and model: Boeing 737-71B
- Registry model: [Boeing 737-71B](https://openairdocs.org/model/boeing-737-71b) (OpenAirDocs)
- Aircraft serial: 29366
- Aircraft time: 50,501 hours, 32,811 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Plate
- 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/SWAA2023122936245

## Discrepancy

AFT CARGO COMPARTMENT-EXISTING FLOOR SUPPORT ZEE CHANNEL HAS CORROSION ON SEVERAL SPOTS BTW STA 767 AND STA 847 LH SIDE 2023-748549<[01] TOOL USED: ULTRASONIC THICKNESS GAGE. P/N: 45MG. S/N: 130061901. DUE DATE: 09-JUN-24.;[02] REPLACED FLOOR SUPPORT ZEE CHANNEL AND SIDE PLATE (1E/A) AND FASTENERS LOC BTW 767 TO BS 847 AT LH SIDE AFT CARGO COMPARTMENT IAW B737-700 SRM 53-00-53-2R-6 REPAIR 6; SRM 51-10-02 AND DWG 146A7500 REV A<BR>SEE INDIVIDUAL SIGN OFFS BELOW;[03] CORRECTED STEP 2<BR>REPLACED FLOOR SUPPORT ZEE CHANNEL AND SIDE PLATE (1E/A) AND FASTENERS LOC BTW 747 PLUS 13.5 INCHES TO BS 847 AT LH SIDE AFT CARGO COMPARTMENT IAW B737-700 SRM 53-00-53-2R-6 REPAIR 6; SRM 51-10-02 AND DWG 146A7500 REV A<BR>SEE INDIVIDUAL SIGN OFFS BELOW;[04] REPLACED FLOOR SUPPORT ZEE CHANNEL AND SIDE PLATE (1E/A) AND FASTENERS LOC BTW 747 PLUS 13.5 INCHES TO BS 847 AT LH SIDE AFT CARGO COMPARTMENT IAW B737-700 SRM 53-00-53-2R-6 REPAIR 6; SRM 51-10-02 AND DWG 146A7500 REV A.

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