Service difficulty report · Post · Lear 60LEAR

Difficulty date
December 15, 2010
Submitted
February 10, 2011
Operation
General aviation
Aircraft
N7734T
Make and model
Lear 60LEAR
Aircraft serial
60139
Aircraft time
6,409 hours, 3,581 cycles
Part
Post
Part number
541021511
Condition
Mismanufactured
Location
Window
Part time
6,409 hours, 3,581 cycles
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

LT WINDSHIELD WAS BEING CHANGED DUE TO HEAT ELEMENT FAILURE. DURING REMOVAL OF THE CENTER-POST, IT WAS DISCOVERED THE BOTTOM 2 HOLES IN THE CENTER-POST WERE OVER COUNTER BORED BY THE FACTORY. THIS CREATED A LIGHTNING HOLE AROUND THE FASTENERS, THUS PROVIDING ZERO SUPPORT FOR THE LOWER PORTION, (ABOUT 5 IN) OF THE CENTER-POST. THE ONLY FIX IS TO INSTALL AN NEW CENTER-POST FROM MFG. THE NEW PART COMES WITHOUT HOLES AND TAKES A FULL DAY TO DRILL AND FIT; IF YOU CAN GET A CENTER-POST FROM MFG.