# SDR HALA20240705180

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 3, 2024
- Submitted: July 5, 2024
- Operation: Air carrier
- Aircraft: [N215HA](https://openairdocs.org/aircraft/N215HA), registered now
- Make and model: Airbus A321-271N
- Registry model: [Airbus A321-271N](https://openairdocs.org/model/airbus-a321-271n) (OpenAirDocs)
- Aircraft serial: 8266
- Aircraft time: 17,876 hours, 3,911 cycles
- System (JASC): [4900 · Airborne Auxiliary Power Unit (APU) System](https://openairdocs.org/jasc/4900)
- Part: Master Switch
- Part number: UNKNOWN
- Condition: Faulted
- Location: Apu
- 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/HALA20240705180

## Discrepancy

DMI 209186 - APU MASTER S/W INTERMIT HAVE TO TAP ( MASTER SWITCH ON LIGHT ). REPLACED APU MASTER SWITCH 14KD PER ESPM 20-45-11  OPS CHECK APU PER AMM 49-00-00  OK

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