SDR CA050217001

Service difficulty report · Drive Shaft

Difficulty date: February 4, 2005
Submitted: March 3, 2005
Operation: General aviation
Engine: Pwa JT15D5
System (JASC): 7210 · Turbine Engine Reduction Gear
Part: Drive Shaft
Condition: Failed
Location: Agb
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.

What was found

(CAN) UPON REMOVAL OF THE AGB FROM THE ENGINE IT WAS FOUND THAT THE AGB DRIVE SHAFT HAD DECOUPLED FROM THE HIGH ROTOR AND HAD FALLEN INTO THE GEARBOX CAUSING INTERNALDAMAGE. THE SHAFT FELL INTO THE AGB DUE TO THE SHAFT SUPPORT PLUG COMING OUT OF THE AGB DRIVE BEVEL GEAR (P/N 3105380-01). THE PIN THAT IS INTENDED TO RETAIN THE SHAFT SUPPORT PLUG IN THE GEAR APPEARED TO BE MISSING.