Service difficulty report · Exciter · Boeing 737890

Difficulty date
December 30, 2017
Submitted
January 2, 2018
Operation
Air carrier
Aircraft
N559AS
Make and model
Boeing 737890
Aircraft serial
35178
Aircraft time
41,942 hours, 12,468 cycles
System (JASC)
7412 · Exciter
Part
Exciter
Part number
9238M66P08
Part serial
UNJEB312
Condition
Failed
Location
Nr 1 Engine
Part time
41,971 hours, 12,478 cycles
Stage of operation
TX
How discovered
O
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

NR 1 ENG NO LIGHT OF WITH IGN L SELECTED. NORMAL START WITH IGN R SELECTED. GROUNDED - YES. R&R NR 1 ENG LT IGNITER PLUG REF AMM 74-21-02. NO HELP. FOUND LT IGNITION LEAD WELDED INSIDE EXCITER BOX PLUG. R&R NR 1 ENG LT IGNITION LEAD REF AMM 74-21-01, R&R NR 1 ENG LT IGNITION EXCITER REF AMM 74-11-01. OPS CHECK GOOD.