SDR CA130923006

Service difficulty report · Pinion Gear · Bell 407

Difficulty date: July 25, 2013
Submitted: September 14, 2015
Operation: General aviation
Make and model: Bell 407
Aircraft time: 4,802 hours
Engine: Allsn 250C47B
System (JASC): 7210 · Turbine Engine Reduction Gear
Part: Pinion Gear
Part number: 6893672
Condition: Broken
Location: Gearbox
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

(CAN) PILOT EXPERIENCED ENGINE CHIP LIGHT IN FLIGHT. ACFT LANDED, CHIP PLUGS INSPECTED. NOTHING APPARENT FOUND ON SELF SEALING QUICK DISCONNECT PLUG. PLUG REINSTALLED LIGHT STILL ON. MAINTENACE WENT TO SITE, REMOVED CHIP PLUG BOSS, FOUND GEAR TOOTH. ACFT GROUNDED. NEW GEARBOX INSTALLED.

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