What was found
FOUND PAINT SEALANT INSIDE MAIN ROTOR MAST TUBE BLISTERED AND FALLING INTO M/R TRANSMISSION GEARBOX. APPEARED THAT M/R TRANSMISSION OIL MOBILE SHC 626 IS NOT COMPATIBLE WITH SEALANT PAINT ON INSIDE OF M/R MAST.
- Difficulty date
- October 13, 2000
- Submitted
- November 2, 2000
- Operation
- General aviation
- Aircraft
- N521FB
- Make and model
- Hughes 500N
- Aircraft serial
- LN001
- System (JASC)
- 6230 · Main Rotor Mast/Swashplate
- Part
- Mast
- Condition
- Damaged
- Location
- Main Rotor
- Part time
- 9,553 hours
- Component
- M/R Mast
- Component part number
- 369022014
- 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.