Service difficulty report · Ignition Switch · Boeing 767322

Difficulty date
November 7, 2012
Submitted
December 7, 2012
Operation
Air carrier
Aircraft
N661UA
Make and model
Boeing 767322
Aircraft serial
27158
Aircraft time
83,843 hours, 13,404 cycles
Engine
Pwa PW4060
Part
Ignition Switch
Part number
AC3000041
Part serial
2280
Condition
Faulty
Location
Nr 2
Stage of operation
IN
How discovered
O
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

NR 2 ENGINE IGNITION TEST FAILED. BOTH IGNITERS FIRE WITH SWITCH SELECTED ON 1 AND ENGINE START SWITCH ON GROUND, AUTO, AND CONT WITH START SWITCH ON FLT, ONLY ONE IGNITER FIRING ON POSITION 1. IGN SWITCH IN NR 1 POS AND NR 2 ENGINE START SWITCH ON FLT NR 2 IGNITER NOT FIRING. NR 1 ENGINE OPS CHECKS NORMAL. REPLACED RIGHT ENGINE IGN AND START CONT SWITCH, ALSO FOUND TWO WIRES MISWIRED AT START SWITCH REWIRED CORRECTLY. OPS CHECK'S GOOD, NO FAULTS.