What was found
DURING INSPECTION OF ACFT AFTER REMOVAL OF TAILROTOR AFT DRIVE SHAFT FOUND FLEX COUPLING BROKEN STRAPS AND GROOVE MARKS IN TAILROTOR GEARBOX HSG. NO DAMAGE ALLOWED IAW AEC INSTRUCTIONS. REMOVED FOR REPAIR.
- Difficulty date
- February 4, 2013
- Submitted
- February 6, 2013
- Operation
- Air carrier
- Aircraft
- N89SM
- Make and model
- Aerosp AS365N2
- Aircraft serial
- 6425
- Aircraft time
- 11,238 hours, 32,010 cycles
- System (JASC)
- 6520 · Tail Rotor Gearbox
- Part
- Flex Coupling
- Part number
- 365A33621300
- Condition
- Broken
- Location
- Tail Rotor Drive
- Part time
- 1,918 hours
- Component
- Tail Rotor Gear
- Component part number
- 365A33600506
- Stage of operation
- IN
- How discovered
- V
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.