# SDR DL73E962788

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 30, 1996
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N239WA](https://openairdocs.org/aircraft/N239WA), registered now
- Make and model: Boeing 737247
- Aircraft serial: 23187
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Duct
- Condition: Collapsed
- Location: Rt Pack
- Component: 65544728
- Stage of operation: TO
- Nature of condition: B
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DL73E962788

## Discrepancy

ON TAKEOFF AFTER RETRACTING L/GEAR, LOUD BANG FOLLOWED BY SMOKE IN CABIN.  A/C RETURNED TO GATE.  FOUND DUCT FROM RT PACK HOT AIR SIDE OF MIX VALVE DISCONNECTED AND COLLAPSED (P/N 65-54474-1).  MUFFLER 21-20-0-46A REF G COLLAPSED(P/N     65-78947-10) AND MIX CHAMBER REF 360 (P/N 65-54472-8) PARTIALLY COLLAPSED.  DUCTS REPLACED AND SYS CHKS OK.

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