What was found
STUD HAD SHEARED OFF OF THE TAIL ROTOR GEARBOX MOUNTING FLANGE AT ONE O`CLOCK POSITION. NOTICED POSITIONS THREE, FIVE AND ELEVEN O`CLOCK STUDS WERE LOOSE AS WELL. REMOVED TAIL ROTOR GEARBOX FROM THE ACFT.
- Difficulty date
- September 4, 2013
- Submitted
- September 5, 2013
- Operation
- Air carrier
- Aircraft
- N557UH
- Make and model
- Bell 430
- Aircraft serial
- 49120
- Aircraft time
- 5,414 hours, 17,317 cycles
- Engine
- Allsn 250C40B
- System (JASC)
- 6520 · Tail Rotor Gearbox
- Part
- Stud
- Condition
- Broken
- Location
- T/R Gearbox
- Part time
- 7,207 hours
- Component
- Gearbox · Bell
- Component part number
- 222042001103
- 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.