SDR DELR050710

Service difficulty report · Bearing · Lear 60LEAR

Difficulty date
May 7, 2010
Submitted
May 7, 2010
Operation
General aviation
Aircraft
N360AN
Make and model
Lear 60LEAR
Aircraft serial
137
Aircraft time
7,291 hours, 5,220 cycles
Part
Bearing
Part number
AA40112
Condition
Mismanufactured
Location
Spoilers
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

NEW SPOILERON BEARINGS THAT WERE ORDERED, P/N AA401-12, WERE RECEIVED WITH THE OUTSIDE DIAMETER BELOW THE TOLERANCE LISTED IN THE SRM CAUSING A LOOSE FIT WHEN INSTALLED. SRM STATES .4400 OUTSIDE DIAMETER WITH NO TOLERANCE ALLOWED. ALL BEARINGS RECEIVED MEASURED .438. NOTIFIED LEARJET AND THEY STATED ALL THEIR BEARINGS IN STOCK ALSO MEASURE .438. REFERENCE LEARJET 60 SRM, 51-71-03, PAGE 1 & 2, ITEM 12.