# SDR ASAA2026040465321

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 4, 2026
- Submitted: April 6, 2026
- Operation: Air carrier
- Aircraft: [N472AS](https://openairdocs.org/aircraft/N472AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 60580
- Aircraft time: 41,134 hours, 12,596 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: D71701100
- Condition: Inoperative
- 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/ASAA2026040465321

## Discrepancy

INTERIOR FWD LEFT BANK OF EMERGENCY EXIT LIGHTS INCLUDING EXTERIOR FWD LEFT OVERWING EXIT INOP. GROUNDED - YES. TRANSFERED TO MIG-5 S/N: OK464659 REMOVED AND REPLACED BATTERY PACK OPS CK GOOD IAW B737-900 AMM 33-51-06-960-805.

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