What was found
MAIN GEAR BOX UPPER SURFACE WHERE IT MATES WITH THE RING GEAR HAS MINOR PITTING CORROSION MEASURING APPROXIMATELY .002” - .003” IN DEPTH.
- Difficulty date
- July 2, 2021
- Submitted
- July 2, 2021
- Operation
- Air carrier
- Filed by
- 2A6D933B
Air Methods LLC - Aircraft
- N4613
- Make and model
- Snias AS350B3
- Aircraft serial
- 4613
- Aircraft time
- 5,507 hours, 11,300 cycles
- System (JASC)
- 6320 · Main Rotor Gearbox
- Part
- Gearbox
- Part number
- 350A32315602
- Part serial
- MAP743
- Condition
- Corroded
- Location
- Main Rotor
- Part time
- 11,774 hours, 22,810 cycles
- Stage of operation
- IN
- How discovered
- 9
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.