# SDR SWAA2023070754529

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 31, 2023
- Submitted: July 7, 2023
- Operation: Air carrier
- Aircraft: [N8302F](https://openairdocs.org/aircraft/N8302F), registered now
- Make and model: Boeing 737-8H4
- Registry model: [Boeing 737-8H4](https://openairdocs.org/model/boeing-737-8h4) (OpenAirDocs)
- Aircraft serial: 36680
- Aircraft time: 36,881 hours, 16,672 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Channel
- 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/SWAA2023070754529

## Discrepancy

CORROSION AT AFT CARGO COMPARTMENT FLOOR SUPPORT Z CHANNEL S-26R FROM STA 727I TO STA 767 WL 151<[01] FOUND EXFOLIATED CORROSION THROUGH OUT OF LIMITS PER SRM 53-00-53-1A-2<BR>REMOVED AFT CARGO R/H Z CHANNEL FROM SECTION 727F - 767 PER SRM 51-40-02-0G-0<BR>LOCATED AND DRILLED NEW Z-CHANNEL AT AFT CARGO COMPARTMENT FLOOR SUPPORT S-26R STA 727I TO STA767 WL151 PER SRM 51-40-05-0G-0<BR>MAT USE:BAC1496-377 7075 T6<BR>TREATED AND PRIMED NEW Z-CHANNEL SECTION AT AFT CARGO COMPARTMENT FLOOR SUPPORT S-26R FROM STA 727I TO STA 767 PER AMM 51-21-41-370-803 AND AMM 51-21-72-370-804<BR>INSTALLED NEW Z-CHANNEL SECTION AT AFT CARGO COMPARTMENT FLOOR SUPPORT AT STR 26R STA 727I TO STA 767 WL 151 PER SRM 51-40-02-0G-0<BR>DWG# 146A7502;[02] RII- VERIFIED REPLACEMENT

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