SDR ASAA2016100218188

Service difficulty report · Exciter · Boeing 737990ER

Difficulty date: October 2, 2016
Submitted: October 4, 2016
Operation: Air carrier
Aircraft: N471AS
Make and model: Boeing 737990ER
Aircraft serial: 41703
Aircraft time: 7,905 hours, 2,601 cycles
System (JASC): 7410 · Ignition Power Supply
Part: Exciter
Part number: 9238M66P08
Part serial: UNNCW573
Condition: Intermittent
Location: Nr 2 Engine
Part time: 68,709 hours, 36,158 cycles
Stage of operation: TX
How discovered: V
Nature of condition: O
Precautionary procedure: O

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

What was found

#2 ENGINE LEFT IGNITION INOP. GROUNDED - YES. UNABLE TO DUPLICATE FAULT, PRECAUTIONARY REPLACEMENT OF L/H EXCITER, REF B737-900 AMM 74-11-01, AND REPLACEMENT OF IGNITION PLUG, REF B737-900 AMM 74-21-02. OPS CHECK NORMAL, REF B737-900 AMM 74-00-00.