# SDR SWAA2023102099583

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 12, 2023
- Submitted: October 20, 2023
- Operation: Air carrier
- Aircraft: [N7862A](https://openairdocs.org/aircraft/N7862A), registered now
- Make and model: Boeing 737-79P
- Registry model: [Boeing 737-79P](https://openairdocs.org/model/boeing-737-79p) (OpenAirDocs)
- Aircraft serial: 33009
- Aircraft time: 54,202 hours, 36,257 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Floor Support
- Part number: UNKNOWN
- 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/SWAA2023102099583

## Discrepancy

CORROSION FLOOR STRUCTURE INNER CHORD LOCATED BS986.5 RBL 60 AND WL 208.1 AFT GALLEY AND LAV 2023-577884<[01] TOOL USED: ULTRASONIC THICKNESS GAGE; P/N: 45MG; S/N: 221860711; CAL DUE DATE: 07-NOV-23;[02] REPLACED INNER CHORD LOCATED BS887 + 6 INCHES TO BS1006 RBL 60 AND WL 208.1 AFT GALLEY AND LAV AND FASTENERS I.A.W B737-700 SRM 51-10-02 ITEM 9; SRM 51-40-02 AND DWG: 147A8501 SHEET: 93 REV: A . SEE INDIVIDUAL SIGNOFF BELOW;[03] TASK CARD COMPLETED <BR>REPLACED INNER CHORD LOCATED BS887 + 6 INCHES TO BS1006 RBL 60 AND WL 208.1 AFT GALLEY AND LAV AND FASTENERS I.A.W B737-700 SRM 51-10-02 ITEM 9; SRM 51-40-02 AND DWG: 147A8501 SHEET: 93 REV: A . SEE INDIVIDUAL SIGNOFF BELOW<BR>RII

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