# SDR SWAA2023050524636

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 7, 2023
- Submitted: May 5, 2023
- Operation: Air carrier
- Aircraft: [N7747C](https://openairdocs.org/aircraft/N7747C), registered now
- Make and model: Boeing 737-7BD
- Registry model: [Boeing 737-7BD](https://openairdocs.org/model/boeing-737-7bd) (OpenAirDocs)
- Aircraft serial: 36091
- Aircraft time: 50,468 hours, 25,711 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Channel
- Condition: Broken
- 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/SWAA2023050524636

## Discrepancy

FWD CARGO LEFT 'Z' CHANNEL IS BROKEN AT 500A-500B ALSO INTERCOSTAL SUPPORT ATTACHED TO 'Z' CHANNEL IS ALSO BROKEN.<[01] REMOVED Z CHANNEL SECTION FROM STA 480-500D PER SRM 51-40-02-0G-0<BR>LOCATED AND DRILLED NEW Z CHANNEL SECTION FROM STA 480-500D PER SRM 51-40-05-0G-0 MAT USED: BAC1496-444-7075-T62 (PO:2009251).<BR>FABRICATED SPLICE REPAIR AT L/H Z CHANNEL STA 480+10' PER SRM 53-00-53-2R-5<BR>TREATED AND PRIMED NEW Z CHANNEL SECTION 480+10' -500D AND NEW SPLICE REPAIR PLATE PER AMM 51-21-41-370-803 AND AMM 51-21-72-370-804<BR>APPLIED BMS 10-11; TYPE 2 ENAMEL TO NEW Z CHANNEL SECTION 480-500D AND NEW SPLICE REPAIR; PER SOPM 20-41-02.<BR>INSTALLED NEW Z CHANNEL SECTION FROM STA 480-500D PER SRM 51-40-02-0G-0;[02] VERIFIED STEP # 1

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