# SDR CALA2023080202394

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 31, 2023
- Submitted: August 2, 2023
- Operation: Air carrier
- Aircraft: [N73270](https://openairdocs.org/aircraft/N73270), registered now
- Make and model: Boeing 737824
- Aircraft serial: 31632
- Aircraft time: 68,306 hours, 23,827 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: ADD71701100
- Part serial: 177838
- Condition: Discharged
- Location: Row 20 Rh
- Stage of operation: IN
- How discovered: C
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2023080202394

## Discrepancy

EMERGENCY LIGHTING SYSTEM OPERATIONAL CHECK  {B737-33-3-0235} - OVERWING CEILING EXIT SIGN, BOTH R/H OVERWING ESCAPE HATCH UPPER EXIT SIGNS AND BOTH L/H & R/H OVERWING ESCAPE HATCH LOWER EXIT SIGNS ARE INOP. REPLACED BATTERY PACK UNDER DATO PANEL AT ROW 20 RH SIDE IN REFERENCE TO AMM 33-51-06. ALL EMERGENCY LIGHTS OPS CHECKS GOOD. PARTS USED:  99-3351-3-0015,QTY :1

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