Service difficulty report · Wire · Lear 31A

Difficulty date
March 16, 2018
Submitted
March 27, 2018
Operation
Air carrier
Aircraft
N955J
Make and model
Lear 31A
Aircraft serial
31228
Aircraft time
3,708 hours, 3,101 cycles
Part
Wire
Condition
Overheated
Location
Lt Gen Buss
Part time
3,708 hours, 3,101 cycles
Stage of operation
IN
How discovered
O
Nature of condition
M
Precautionary procedure
K

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

What was found

DURING FLIGHT PILOT RECEIVED A FALSE INDICATION OF AN OPEN CURRENT LIMITER ON THE LT GENERATOR BUSS. INSPECTION OF E43 POWER DISTRIBUTION PANEL SHOWED THREE 10 GAUGE WIRES ON THE LT GEN BUSS HAD OVERHEATED. THE WIRES LEAD TO J311 CONNECTOR WHERE PIN D HAD STARTED TO MELT THE PIN SUPPORTING MATERIAL. REPLACED THE WIRES & J311 WITH NEW PINS, THEN NOTICED THE RT SIDE IS ALSO SHOWING SIGNS OF HEAT STRESS AT THE RT GEN BUSS. THESE WIRES IN QUESTION LEAD TO THE LT & RT INVERTERS RESPECTIVELY.

More about the Lear 31A