Service difficulty report · Clutch · Boeing 767332

Difficulty date
May 24, 2011
Submitted
May 29, 2011
Operation
General aviation
Filed by
ANZY188C
Air New Zealand Limited
Aircraft
N597HA
Make and model
Boeing 767332
Aircraft serial
23277
Part
Clutch
Part number
253T72042
Part serial
DL12
Condition
Misoverhauled
Location
Autothrottle
Stage of operation
IN
How discovered
9
Nature of condition
W
Precautionary procedure
K

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

What was found

UNABLE TO FIT BOLTS TO REPLACEMENT AUTO THROTTLE CLUTCH PACK. THE REPLACEMENT AUTO THROTTLE CLUTCH PN 253T7204-2 WAS REQUIRED TO ALLOW REMOVAL OF A LOAN ITEM. WHEN MX FITTED THE REPLACEMENT ITEM, THE MOUNTING BOLTS WOULD ONLY ENGAGE THE CLUTCH PACK SUPPORT BRACKET BY ONE THREAD. MX HAVE RAISED AN OR FOR THIS DEFECT. ENGINEERING FOUND THE CLUTCH PACK WAS REMOVED AND ENGINEERING STAFF WERE REQUESTED TO INVESTIGATE THE ISSUE, ER 190142217-0001 REFERS. DWG 253T7425-10 SHEET 5, CLUTCH PACK SUPPORT BRACKET INDICATES THE INSERT AND BOLT ARE INSTALLED FROM THE FAR SIDE OF VIEW B6. THE PN 253T7204-2, CLUTCH PACK ASSY SUPPLIED HAS THE CLUTCH PACK SUPPORT BRACKET INSERTS ON THE NEAR SIDE. THIS IS SHOWN IN DWG 253T7425-10 SHEET 5, VIEW B6, THE INSERTS AS INSTALLLED ARE INCORRECT IAW THIS DWG. HAVE REQUESTED A REPLACEMENT PN 253T7204-2, CLUTCH PACK ASSY TO REPLACE THE INCORRECTLY ASSEMBLED -0- HOUR DEFECT ITEM.