Service difficulty report · Gear · Boeing 1072

Difficulty date
January 28, 2015
Submitted
February 2, 2015
Operation
General aviation
Aircraft
N188CH
Make and model
Boeing 1072
Aircraft serial
107
Aircraft time
68,134 hours
Engine
Ge CT581402
Part
Gear
Part number
107D22904
Part serial
TA127
Condition
Cracked
Location
Accessory Drive
Part time
4,772 hours
Stage of operation
IN
How discovered
M
Nature of condition
O
Precautionary procedure
K

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

What was found

INDICATION FOUND AROUND THE BASE OF THE BEARING JOURNAL, CLOSEST TO THE GEAR TEETH THAT ARE DRIVEN BY THE ACCESSORY DRIVE GEAR DURING MPI REQUIRED FOR O/H OF COMPONENT. PART HAS BEEN SENT OUT FOR FURTHER TESTING SINCE INDICATION SEEMS ISOLATED TO THE OUTER SURFACE.