What was found
(CAN) WHEN MAST WAS RECEIVED FROM SUPPLIER, A MPI REVEALED SEVERAL CRACKS WHICH RUN BETWEEN 2 BORES AND OUTSIDE CIRCUMFERENCE OF FLANGE. SENT TO AARPE FOR FOLLOW-UP INVESTIGATION WITH FAA.
- Difficulty date
- March 2, 2000
- Submitted
- April 14, 2000
- Operation
- Air carrier
- Make and model
- Bolkms BK117A4
- System (JASC)
- 6230 · Main Rotor Mast/Swashplate
- Part
- Mast
- Part number
- 4639205011
- Condition
- Cracked
- Location
- M/R Head
- Part time
- 3,926 hours
- Component
- Transmission · Kawski · 1171201001
- Stage of operation
- IN
- How discovered
- M
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.