# SDR MASA2010080700851

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 7, 2010
- Submitted: August 10, 2010
- Operation: Air carrier
- Aircraft: [N929LR](https://openairdocs.org/aircraft/N929LR), registered now
- Make and model: Cndair CL6002D24
- Aircraft serial: 15029
- Aircraft time: 14,588 hours, 11,513 cycles
- System (JASC): [3620 · Pneumatic Indicating System](https://openairdocs.org/jasc/3620)
- Part: Unknown
- Condition: Malfunctioned
- Location: Bleed Air Sys
- Stage of operation: CR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: G, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/MASA2010080700851

## Discrepancy

LEFT BLEED DUCT MASTER WARNING IN FLT, CREW ELECTED TO RTF AND DURING DESCENT WHILE PASSING THROUGH 15000 FEET THE CAPTAIN MANUALLY DEPLOYED THE 02 MASKS.  MX RE-SECURED MT137 AND CLEANED MT138 RAN ENGINES OPS CHECKED 0, RE-SECURED MT137 AND CLEANED MT138 RAN ENGINES OPS CHECKED.  MX FERRIED TO OKC FOR O2 GENERATOR REPLACEMENT REQUIRED BY MASK DEPLOYMENT.

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