# SDR DALA2026073004415

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 27, 2026
- Submitted: July 31, 2026
- Operation: Air carrier
- Aircraft: [N315NB](https://openairdocs.org/aircraft/N315NB), registered now
- Make and model: Airbus A319-114
- Registry model: [Airbus A319-114](https://openairdocs.org/model/airbus-a319-114) (OpenAirDocs)
- Aircraft serial: 1230
- Aircraft time: 69,471 hours, 36,120 cycles
- System (JASC): [2300 · Communications System](https://openairdocs.org/jasc/2300)
- Part: Microphone
- Condition: Inoperative
- Location: Oxygen Mask
- Component: Oxygen Mask
- Component part number: MF100511
- Stage of operation: TX
- 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/DALA2026073004415

## Discrepancy

DURING PREFLIGHT, DISCOVERED FO O2 MASK BOOM MIC INOP.    SWAPPED FO WITH 4TH OCCUPANT SEAT MASK PER A319 AMM 35-12. DEFERRED 4TH OCCUPANT SEAT TO MEL 25-11-07. M PROCEDURES C/W AND PLACARD INSTALLED.  R & R F/O MASK BOOM MIC IAW AMM 35-13. OPS/LEAK CHECK GOOD. RFID UPDATED, SWAPPED PROCEDURE REVERESED. PLACARD REMOVED. (LP: 8847386, AIRCRAFT WAS GROUNDED)

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