What was found
DURING DISASSEMBLY, THE RIGHT OIL PASSAGE O-RING FLANGE WAS FOUND DAMAGED. THE DAMAGE WAS OBVIOUSLY NOTED DURING LAST OVERHAUL DUE TO THE INSTALLATION OF 2 O-RINGS TO MAKE IT SEAL.
- Difficulty date
- September 15, 1995
- Submitted
- March 26, 2000
- Operation
- General aviation
- Aircraft
- N491HL
- Make and model
- Bolkms BO105S
- Aircraft serial
- S664
- System (JASC)
- 6320 · Main Rotor Gearbox
- Part
- Housing
- Part number
- 4619201011
- Condition
- Flange Damage
- Location
- M/R Gearbox
- Part time
- 5,575 hours
- Stage of operation
- IN
- Nature of condition
- W
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.