# SDR DL757002008

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 14, 2000
- Submitted: October 18, 2000
- Operation: Air carrier
- Aircraft: [N6708D](https://openairdocs.org/aircraft/N6708D), registered now
- Make and model: Boeing 757232
- Aircraft serial: 30480
- Aircraft time: 749 hours, 357 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Valve
- Condition: Failed
- Location: Lt A/C Bay
- Stage of operation: CL
- How discovered: O
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DL757002008

## Discrepancy

CLIMBING THRU 37000 FT, NOTICED A SUDDEN SMELL OF BURNING  RUBBER.  F/A''S REPORTED THAT IT SOUNDED LIKE THE A/C AIR WENT OFF IN THE CABIN.  R DUCT PRESSURE DROPPED TO APPROX 25 PSI, EVENTUALLY RETURNED TO NORMAL AND SMELL DISSIPATED.  SMELL WAS CONFINED TO COCKPIT.  F/A''S IN FWD GALLEY DID NOT SMELL IT UNTIL COCKPIT DOOR WAS OPENED.  REPLACED LEFT ACM AND LOW LIMIT VALVE PER MM.

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