# SDR IPXA2025092167557

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 21, 2025
- Submitted: September 23, 2025
- Operation: Air carrier
- Aircraft: [N161UP](https://openairdocs.org/aircraft/N161UP), registered now
- Make and model: Airbus A300 F4-622R
- Registry model: [Airbus A300 F4-622R](https://openairdocs.org/model/airbus-a300-f4-622r) (OpenAirDocs)
- Aircraft serial: 0850
- Aircraft time: 26,086 hours, 15,684 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: 32145410
- Part serial: 006955
- Condition: No Test
- Location: Zone 200
- Stage of operation: IN
- How discovered: C
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/IPXA2025092167557

## Discrepancy

OPERATIONAL TEST OF THE EMERGENCY POWER-SUPPLY UNITS WITH BITE CHECK FAILS. REF STEP 15 OF PSM. T/S PER TSM 33-51-00/101. FOUND UNIT FAULT LIGHT ILLUMINATED ON ESPU. REMOVED AND REPLACED ESPU IAW MM 33-51-14/0401. ALL OPS CHECK GOOD.

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