# SDR 2DYA201804160001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 11, 2018
- Submitted: April 16, 2018
- Operation: Air carrier
- Aircraft: [N770JM](https://openairdocs.org/aircraft/N770JM), registered now
- Make and model: Boeing 767233
- Aircraft serial: 24145
- Aircraft time: 83,150 hours, 20,069 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: 20131A
- Condition: Discharged
- Location: Emergency Light
- Stage of operation: IN
- How discovered: C
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2DYA201804160001

## Discrepancy

DURING INSPECTION, AN EMERGENCY LIGHT DID NOT ILLUMINATE DURING THE PRESS TO TEST CHECK. ON TROUBLESHOOTING IT WAS DETERMINED THE FAILURE WAS DUE TO A WEAK BATTERY.  REMOVED AND REPLACED THE BATTERY PACK IAW AMM 25-65-17 AND OPS CHECKED GOOD. NO FURTHER ISSUES.

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