# SDR SWAA2022041993751

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 12, 2022
- Submitted: April 19, 2022
- Operation: Air carrier
- Aircraft: [N472WN](https://openairdocs.org/aircraft/N472WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 33831
- Aircraft time: 58,559 hours, 34,804 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Light
- Part number: M1668
- Condition: Inoperative
- 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/SWAA2022041993751

## Discrepancy

EMERGENCY EXIT LIGHTS ASSOCIATED WITH BATTERY PACK M1668 ARE INOP / [01] PARTIAL UPDATE TO STEP 1.;[02] CERTIFIED PARTIAL UPDATE TO STEP 1.;[03] REPLACED EMERGENCY EXIT LIGHTS BATTERY PACK M1668 AND PERFORMED GOOD TEST PER AMM 33-51-06-960-805.;[04] VERIFIED PARTIAL TO STEP 1 OK TO CLOSE;[05] VERIFIED PARTIAL TO STEP 1 OK TO CLOSE GIVEN.;[06] COMPLETED STEP 1.<BR><BR>VERIFIED ALL STEPS COMPLETE.;[07] CERTIFIED COMPLETED STEP 1.;[08] VERIFIED STEP 1.

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