Service difficulty report · Exciter · Boeing 737890

Difficulty date
April 27, 2012
Submitted
April 30, 2012
Operation
Air carrier
Aircraft
N569AS
Make and model
Boeing 737890
Aircraft serial
35184
Aircraft time
19,478 hours, 6,308 cycles
Engine
Cfmint CFM567B27
System (JASC)
7412 · Exciter
Part
Exciter
Part number
9238M66P08
Part serial
UNJGA997
Condition
Failed
Location
Nr 1 Engine
Part time
19,498 hours, 6,315 cycles
Stage of operation
TX
How discovered
O
Nature of condition
J
Precautionary procedure
D

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

What was found

NR 1 ENGINE HAS FUEL FLOW NO LIGHT OFF WITH RT IGNITION. ACFT GROUNDED. REMOVED NR 1 ENGINE RT IGNITER & INSPECTED NO FAULTS. REPLACED IGNITER REF AMM TASK 49-41-51 AND REPLACED EXCITER UNIT AS A PRECAUTIONARY REF AMM 74-11-01 ACCOMPLISHED GROUND VERIFICATION OF NR 1 ENGINE RT IGNITER SYS REF AMM 74-00-00 AUDIBLE TEST & EEC BITE IGNITION TEST. RAN ENGINE BOTH RT & LT IGNITION SYS.