# SDR 2004UALA01038

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 9, 2004
- Submitted: November 16, 2004
- Operation: Air carrier
- Aircraft: [N318UA](https://openairdocs.org/aircraft/N318UA), registered now
- Make and model: Boeing 737322
- Aircraft serial: 23950
- Aircraft time: 49,512 hours, 27,463 cycles
- Engine: Ge CFM56*
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Duct
- Part number: 65C280023
- Condition: Failed
- Location: Ac Dist Bay
- 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/2004UALA01038

## Discrepancy

SKIN, STRINGER AND FRAME HEAT DAMAGE FROM FS 516.5 TO 540. STR 26 TO 28.  SUPPLEMENTAL DATA UPDATE - MIX MUFF DUCT OF DUCT ASSEMBLY LOCATED IN MIX CHAMBER AIR DISTRIBUTION BAY AT APPROXIMATE STA 540, BL 0 BLOWN CAUSING HOT AIR TO ESCAPE AND DAMAGE THE STRUCTURE BENEATH.  MAJOR REPAIR ACCOMPLISHED.

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