What was found
DURING 100 HOUR LUBRICATION OF TAIL ROTOR DRIVE SHAFT SPLINES THE #3 TAIL ROTOR DRIVE SHAFT WAS FOUND CRACKED AT ONE ATTACHMENT EAR. TOTAL TIME OF PART IS UNKNOW AS IT IS AN ON CONDITION PART.
- Difficulty date
- July 31, 2020
- Submitted
- August 4, 2020
- Operation
- Air carrier
- Aircraft
- N34BM
- Make and model
- Bell 407
- Aircraft serial
- 53310
- Aircraft time
- 13,087 hours, 33,018 cycles
- Engine
- Allsn 250C47B
- Engine time
- 12,315 hours, 10,446 cycles
- System (JASC)
- 6510 · Tail Rotor Drive Shaft
- Part
- Drive Shaft
- Part number
- 407040325105
- Condition
- Cracked
- Location
- Tail Rotor
- 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.