# SDR ASAA2026010763606

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 7, 2026
- Submitted: January 8, 2026
- Operation: Air carrier
- Aircraft: [N560AS](https://openairdocs.org/aircraft/N560AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35179
- Aircraft time: 69,840 hours, 21,344 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: D71702001
- Condition: Discharged
- 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/ASAA2026010763606

## Discrepancy

WHILE PERFORMING TC 78233001 , FOUND R1/R2 OUTSIDE AFT DOOR , RH AFT WING , RH AFT UNDER WING , L1 AFT DOOR OUTSIDE , L1 OVERHEAD INSIDE , LH AFT WING , LH AFT UNDER WING , ALL INSIDE WING EXIT DOOR , AND R2 INSIDE SMALL GALLEY LIGHTS INOP BEFORE 15 MINUTES. GROUNDED - YES. REMOVED AND REPLACED POWER SUPPLY ASSY M1670, M1671, M1676, M1694, M1695 M2335 AND M1675 REF BOEING AMM TASK 33-51-06-960-806. INSTALLATION TEST GOOD WITH ALL LIGHTS ILLUMINATING AS REQUIRED. NO FURTHER DEFECTS.

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