# SDR CALA2010111500545

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 15, 2010
- Submitted: November 15, 2010
- Operation: Air carrier
- Aircraft: [N12109](https://openairdocs.org/aircraft/N12109), registered now
- Make and model: Boeing 757224
- Aircraft serial: 27299
- Aircraft time: 62,079 hours, 16,156 cycles
- System (JASC): [3520 · Passenger Oxygen System](https://openairdocs.org/jasc/3520)
- Part: Oxygen Mask
- Part number: 417T4205193
- Condition: Cracked
- Location: Cabin
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2010111500545

## Discrepancy

SUPPORT TASK - ROW 2A AND 2B O2 MASK AT FLOW LIMITER, FOUND STRESS CRACKS AT CENTER WELD OF LIMITER.  PB 174080-193, REV C CUST 417T4205-193.  MFG DATE 6-94 TO 8-94.  REPLACED O2 MASKS PER MM 35-21-05.

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