# SDR QMLA2016092216108

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 22, 2016
- Submitted: September 23, 2016
- Operation: Air carrier
- Aircraft: [N766ME](https://openairdocs.org/aircraft/N766ME), registered now
- Make and model: Bolkms BK117C2
- Aircraft serial: 9066
- Aircraft time: 6,674 hours, 20,508 cycles
- System (JASC): [6520 · Tail Rotor Gearbox](https://openairdocs.org/jasc/6520)
- Part: Gearbox
- Part number: 4639003009
- Part serial: 891
- Condition: Cracked
- Location: Tail Rotor
- Part time: 5,726 hours
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/QMLA2016092216108

## Discrepancy

DURING DAILY INSPECTION OF AIRCRAFT,  MECHANIC FOUND HAIRLINE CRACK IN PAINT ON TAIL ROTOR GEARBOX. PAINT WAS REMOVED  DYE PENETRANT INSPECTION WAS PERFORMED. CRACK WAS VERIFIED.

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