What was found
UPON DISASSEMBLY OF GEARBOX FOR METAL. FOUND SPALLING AND GALLING ON GEAR TEETH CAUSING METAL CONTAMINATION AND DAMAGE TO T/M GEAR PN E6893673 S/N PG4068. ASSURE PROPER MACHINING AND MESHING OF GEAR TEETH AT FACTORY.
- Difficulty date
- May 7, 2001
- Submitted
- June 28, 2001
- Operation
- Air carrier
- Aircraft
- N376AL
- Make and model
- Skrsky S76A
- Aircraft serial
- 760002
- System (JASC)
- 6320 · Main Rotor Gearbox
- Part
- Pinion Gear
- Part number
- E6893672
- Part serial
- A09060
- Condition
- Spalled
- Location
- N2 Gear Train
- Part time
- 255 hours
- Component
- Gearbox · Allsn · C30S
- Component part number
- 23035179
- 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.