# SDR SWAA2023042629541

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 20, 2023
- Submitted: April 26, 2023
- Operation: Air carrier
- Aircraft: [N8529Z](https://openairdocs.org/aircraft/N8529Z), registered now
- Make and model: Boeing 737-8H4
- Registry model: [Boeing 737-8H4](https://openairdocs.org/model/boeing-737-8h4) (OpenAirDocs)
- Aircraft serial: 36974
- Aircraft time: 19,991 hours, 9,666 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Condition: Inoperative
- Location: Zn 200 Fus Top
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2023042629541

## Discrepancy

L/H G-4 GALLEY EMERGENCY EXIT LIGHT IS INOP.<[01] SWAPPED BATTERY PACKS FROM M1672 FOR M1673 AND PROBLEM FOLLOWED LIGHTS CAME ON FOR M1673. SWAPPED BACK TO NORMAL CONFIGURATION M1672 FOR M1673 IAW AMM 33-51-06-960-805.;[02] VERIFIED ACTION 1;[03] VERIFIED CORRECTIVE ACTIONS STEP 1.;[04] COMPLETED STEP 1;[05] VERIFIED REMOVAL; REPLACEMENT OF BATTERY PACK M1673 AND PERFORMED GOOD TEST IAW AMM 33-51-06-960-805;[06] VERIFIED CORRECTIVE ACTION ITEMS; CARD COMPLETE.

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