# SDR QMLA2016120616138

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 6, 2016
- Submitted: December 8, 2016
- Operation: Air carrier
- Aircraft: [N64UP](https://openairdocs.org/aircraft/N64UP), registered now
- Make and model: Bolkms BK117B2
- Aircraft serial: 7143
- Aircraft time: 13,982 hours, 40,549 cycles
- System (JASC): [6520 · Tail Rotor Gearbox](https://openairdocs.org/jasc/6520)
- Part: Gearbox
- Part number: 4639003007
- Part serial: 457
- Condition: Making Metal
- Location: Tail Rotor
- Part time: 14,097 hours, 5,118 cycles
- Stage of operation: TX
- How discovered: O
- Nature of condition: J
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/QMLA2016120616138

## Discrepancy

DURING RUN UP OF AIRCRAFT FOR A FLIGHT, TAIL ROTOR CHIP LIGHT ILLUMINATED. PILOT ABORTED TAKEOFF AND CALLED MECHANIC. MECHANICS INSPECTION OF TAIL ROTOR CHIP DETECTOR REVEALED A 3MM METAL CHIP IDENTIFIED AS CATEGORY E INDICATING A SIGNIFICANT FAILURE.

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