SDR CA110810004

Service difficulty report · Sun Gear · Dhav DHC6300

Difficulty date: May 21, 2011
Submitted: September 9, 2011
Operation: Air carrier
Make and model: Dhav DHC6300
Engine: Pwa PT6A27
System (JASC): 7210 · Turbine Engine Reduction Gear
Part: Sun Gear
Condition: Damaged
Location: Rgb
Stage of operation: CR
How discovered: O
Nature of condition: R, J
Precautionary procedure: E, A

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

What was found

IMPROPER MX USED REPLACEMENT GEARS INSTALLED IFSD, ABOUT 10 MINUTES INTO FLIGHT THE PILOT REPORTED HEARING A LOUD BANG AND SUBSEQUENT POWER LOSS. PILOT SECURED NR 2 ENGINE AND FLIGHT CONTINUED AND LANDED SAFELY ON 1 ENGINE. ENGINE WAS REMOVED AND SENT WHERE INVESTIGATION REVEALED RGB PLANET AND SUN GEAR DISTRESS. MFG INVESTIGATION REVEALED THE GEARS HAD BEEN SUPPLIED BY A 3RD PARTY OPERATION AND INSTALLED BY A NON-MFG SHOP.