Service difficulty report · Chip Detector · Aerosp AS355*

Difficulty date
April 15, 2009
Submitted
May 13, 2009
Operation
General aviation
Make and model
Aerosp AS355*
Aircraft time
9,032 hours
Engine
Allsn 250C20R
Part
Chip Detector
Condition
Contaminated
Location
M/R Transmission
Part time
8,979 hours
Stage of operation
NR
How discovered
V
Nature of condition
O
Precautionary procedure
O

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

What was found

(CAN) AFTER RECEIVING A COMPLETE TRANSMISSION ASSY FROM OVERHAUL FROM THE ORIGINAL EQUIPMENT VENDOR, A RECEIVING INSP WAS CARRIED OUT. THIS INSP INCLUDED VISUAL INSP OF THE GEARBOX ASSY CHIP PLUGS, OF WHICH THERE ARE TWO. THE UPPER CHIP PLUG, WHICH IS IN THE PATH OF SPLASH OIL FROM A PLANETARY GEAR REDUCTION ASSY, WAS FOUND TO BE COATED WITH EITHER AN ABRASIVE SAND-LIKE CLEANING AGENT, OR HAD BEEN DROPPED ONTO A FLOOR SURFACE AND PICKED UP THE FINE PARTICULATE THERE, AND WAS NOT PROPERLY INSPECTED AND CLEANED AFTERWARD.