Service difficulty report · Compressor · Snias AS350B2

Difficulty date
July 9, 2010
Submitted
January 4, 2011
Operation
Air carrier
Make and model
Snias AS350B2
Aircraft time
740 hours
Engine
Tmeca ARRIEL1D1
Part
Compressor
Part number
590008
Condition
Out Of Position
Location
Air Con
Part time
782 hours
Stage of operation
IN
How discovered
V
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

THIS PROBLEM IS WITH THE INSTALLATION OF AN IFS AIR CONDITIONING. VISUAL INSP REVEALED A NICK MID WAY UP THE LT AFT MGB SUSPENSION BAR. THIS IS WHERE THE IFS COMPRESSOR PULLEY AND CLUTCH ROTATES, CURRENTLY WITHIN ABOUT .1875" CLEARANCE TO THE BAR. DAMAGE TO BAR WAS WITHIN PUBLISHED LIMITS AND REPAIRED. AIR CONDITIONER COMPRESSOR ASSY MOVED FWD SLIGHTLY WITH WASHERS AT MOUNTING POINTS WHILE MAINTAINING THE ALIGNMENT WITH PULLEY AND DRIVESHAFT TO INCREASE THE CLEARANCE. THE BAR, AFTER REPAIR WAS ROTATED 180 DEGREES AND INSTALLED . CLEARANCE IS NOW APPROX .3125 BETWEEN THE AC COMPRESSOR AND BAR. THIS AREA WILL BE MONITORED WITH A DI.