Service difficulty report · Spacer · Boeing 767322

Difficulty date
December 1, 2005
Submitted
December 6, 2005
Operation
Air carrier
Aircraft
N651UA
Make and model
Boeing 767322
Aircraft serial
25389
Aircraft time
59,748 hours, 9,685 cycles
Engine
Pwa PW4060
Part
Spacer
Condition
Burned
Location
Apu Gen
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

BURNED SPACER BLOCKS BETWEEN APU GENERATOR 3 CABLES. FAILING SPLICE INSTALLATIONS REVEALED A MISMATCH BETWEEN THE SPLICE AND CRIMPER USED. MANUFACTURERS' SPLICES AND CRIMPER DIES MUST BE USED AS A MATCHED SET; IF NOT, AN INCOMPLETE SWAGE WILL RESULT IN HEAT GENERATION FROM GAPS BETWEEN CABLE AND SPLICE SURFACES. UA DEVELOPING A CHANGE ORDER TO REPLACE OLD AL SPLICES WITH NEWER "COPALUM" VERSION, P/N AMP277161-1 IN THE APU GEN POWER FEEDER CABLES.