# SDR UIEA2020120102496

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 28, 2020
- Submitted: December 1, 2020
- Operation: Air carrier
- Aircraft: [N498MC](https://openairdocs.org/aircraft/N498MC), registered now
- Make and model: Boeing 747-47UF
- Registry model: [Boeing 747-47UF](https://openairdocs.org/model/boeing-747-47uf) (OpenAirDocs)
- Aircraft serial: 29259
- Aircraft time: 87,880 hours, 13,876 cycles
- System (JASC): [2750 · Trailing Edge Flap Control System](https://openairdocs.org/jasc/2750)
- Part: Transmission
- Part number: 256U32105
- Part serial: AS00550
- Condition: Malfunctioned
- Location: Te Flaps
- Stage of operation: CL
- How discovered: O
- Nature of condition: F
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2020120102496

## Discrepancy

AFTER TAKE OFF THE FLAP INDICATOR COULD NOT BE VERIFIED IN THE UP (COMMANDED) POSITION, SAME ON LANDING.  TROUBLESHOOTING FOUND NR 3 FLAP  TRANSMISSION SLEEPING DURING LAST FEW INCHES FROM FULLY UP.  NR 3 FLAP TRACK/TRANSMISSION REPLACED, IAW AMM 27-51-33 REV 99.  FLAPS OPERATE NORMAL.

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