# SDR UIEA2016121901041

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 16, 2016
- Submitted: December 20, 2016
- Operation: Air carrier
- Aircraft: [N747BC](https://openairdocs.org/aircraft/N747BC), registered now
- Make and model: Boeing 747-4J6
- Registry model: [Boeing 747-4J6](https://openairdocs.org/model/boeing-747-4j6) (OpenAirDocs)
- Aircraft serial: 25879
- Aircraft time: 42,431 hours, 10,912 cycles
- System (JASC): [3130 · Data Recorders (Flight/Maintenance)](https://openairdocs.org/jasc/3130)
- Part: Beacon
- Part number: DK120
- Part serial: SC94992
- Condition: No Test
- Location: Fdr
- 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/UIEA2016121901041

## Discrepancy

FOUND FLIGHT DATA RECORDER ULB TEST FAILED IAW AMM 23-71-03-002-001 AND 23-71-03-402-015 REV.87 REPLACED DFDR ULB AND CONDITION CHECKED NORMAL.  IAW AMM 23-71-03-712-114 REV.87.  PERFORMED ULB OPERATIONAL TEST AND THE RESULT WAS SATISFACTORY.

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