# SDR DXTA2026010806434

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 4, 2026
- Submitted: January 8, 2026
- Operation: Air carrier
- Aircraft: [N190QS](https://openairdocs.org/aircraft/N190QS), registered now
- Make and model: Bombdr BD7001A12
- Aircraft serial: 70196
- Aircraft time: 996 hours, 340 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: 340020
- Part serial: 013965
- Condition: Faulty
- Location: Zone 200
- 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/DXTA2026010806434

## Discrepancy

WHEN SETTING UP AIRCRAFT THE EMERG LIGHT ON MESSAGE DOESNT INITIALLY COME ON BUT AFTER A FEW MINUTES OF CHARGING THE LIGHT DOES COME ON COMPLETEING THE TEST.  IT APPEARS THAT ONE OF THE POWER PACKS  MAYBE LOSING THE CHARGE IF IT IS OFF FOR  AN EXTENDED. PERIOD OF TIME.  IT WAS CHECKED UPON LANDING AND WORKING FINE.   R & R NR 1 POWER SUPPLY & REPLACED WITH A NEW UNIT IAW AMM 33-53-09. OPS CHKD GOOD.  R & R NR 2 POWER SUPPLY & REPLACED WITH A TESTED UNIT IAW AMM 33-53-11. OPS CHKD GOOD.  R & R NR 3 POWER SUPPLY & REPLACED WITH A NEW UNIT IAW AMM 33-53-11. OPS CHKD GOOD.  R & R NR 4 POWER SUPPLY & REPLACED WITH A NEW UNIT IAW AMM 33-53-13. OPS CHECK GOOD.

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