# SDR 0101746641

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 27, 2001
- Submitted: May 11, 2001
- Operation: Air carrier
- Aircraft: N641NW
- Make and model: Boeing 747 212B
- Registry model: [Boeing 747 212B](https://openairdocs.org/model/boeing-747-212b) (OpenAirDocs)
- Aircraft serial: 21941
- Aircraft time: 73,790 hours, 16,094 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Condition: Discharged
- Location: Cabin
- Stage of operation: CR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/0101746641

## Discrepancy

DURING CRUISE, THE EMERGENCY ESCAPE PATH LIGHTING WENT INTERMITTENTLY ON AND OFF.  MAINTENANCE REPLACED D-ZONE BATTERY PACK AND POWER SUPPLY.  OPERATIONAL CHECK NORMAL.  P/N 60840017-7 AND 60840053-3.

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