# SDR 99ZZZM299

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 20, 1999
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N159PL
- Make and model: Boeing 737242
- Aircraft serial: 21186
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: 5521981
- Condition: Discharged
- Location: Cabin
- Stage of operation: IN
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/99ZZZM299

## Discrepancy

EMERGENCY TRACK LIGHTING REMAINS ON IN ARM POSITION WITH A/C POWER ON LINE AND EXTERIOR EMERGENCY LIGHTS INOPERATIVE.  CYCLED SWITCH TO OFF AND REPLACED EMERGENCY LIGHT BATTERY PACKS PER B737 CHAPTER 33 AND OPERATIONAL CHECK NORMAL.  (M)

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