What was found
RUBBER BOOT CAME LOOSE AND SPRINGS ROTATED INSIDE FRAHM. HELICOPTER HAD A 4 PER VIBRATION AND COULD NOT BE ELIMINATED. REPLACED FRAHM ASSY AND BALANCED HELICOPTER ROTOR SYSTEM TO ACCEPTABLE LEVELS.
- Difficulty date
- October 9, 1997
- Submitted
- March 26, 2000
- Operation
- General aviation
- Aircraft
- N58236
- Make and model
- Bell 407
- Aircraft serial
- 53069
- System (JASC)
- 6220 · Main Rotor Head
- Part
- Frahm Assy
- Part number
- 407010150101A
- Condition
- Worn
- Location
- M/R
- Part time
- 317 hours
- Stage of operation
- NR
- Nature of condition
- E
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.