# SDR ASAA2020021093130

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 9, 2020
- Submitted: February 11, 2020
- Operation: Air carrier
- Aircraft: [N551AS](https://openairdocs.org/aircraft/N551AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 34593
- Aircraft time: 50,715 hours, 17,415 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: D71702001
- Condition: Discharged
- Location: Emergency Lights
- 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/ASAA2020021093130

## Discrepancy

WHILE ACCOMPLISHING T/C 78233008 EMERGENCY LIGHTS OP CHECK FOUND BOTH R1 INSIDE & OUTSIDE LIGHTS INOP, ALSO RIGHT BELLY LIGHT INOP. GROUNDED - YES. REMOVED & REPLACED POWER SUPPLY WITH BATTERY PACK M1671 & M1674 REF B737-800 AMM 33-51-06 OPS CKS NORMAL.

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