Service difficulty report · Gearbox · Bell 407

Difficulty date
January 19, 2021
Submitted
January 21, 2021
Operation
Air carrier
Aircraft
N762MT
Make and model
Bell 407
Aircraft serial
54612
Aircraft time
2,080 hours, 9,489 cycles
Part
Gearbox
Part number
407040007103
Part serial
BH241690
Condition
Making Metal
Location
Main Rotor
Part time
1,664 hours, 808 cycles
Stage of operation
CR
How discovered
O
Nature of condition
J
Precautionary procedure
A

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

PILOT REPORTED MGB CHIP FOR 1 SECOND DURING STRAIGHT AND LEVEL FLIGHT AT 3500 FT MSL, 88% Q 685 MGT. PRECAUTIONARY LANDING INTO TLH. PATIENT WHO WAS ON BOARD WAS PICKED UP BY COMPANY AIRCRAFT AND TRANSPORT WAS COMPLETED TO GAINESVILLE, FL. MECHANIC FOUND ONE HAIR LIKE FERROUS DEBRIS APPROXIMATELY .75 INCH LONG ON THE LOWER MGB CHIP PLUG. AS PER THE AMM THE CHIP PLUG WAS CLEANED AND REINSTALLED GROUND RAN FOR 15 MINS LIGHT ON SKIDS WITH NO FURTHER DEFECTS NOTED AT THIS TIME. AIRCRAFT RELEASED FOR SERVICE.

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