SDR ASAA2019022228333

Service difficulty report · Ignition Sys · Boeing 737990ER

Difficulty date: February 22, 2019
Submitted: February 26, 2019
Operation: Air carrier
Aircraft: N409AS
Make and model: Boeing 737990ER
Aircraft serial: 41733
Aircraft time: 24,184 hours, 7,957 cycles
System (JASC): 7400 · Ignition System
Part: Ignition Sys
Condition: Malfunctioned
Location: Lt Engine
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

LEFT IGNITION FAILED TO LIGHT OFF ENGINE NR 1 DURING START. GROUNDED - YES. C/W FIM 74-21 TASK 806. PERFORMED ENGINE EEC BITE CHECK PER AMM 73-00-00 WITH NO FAULTS FOUND. PERFORMED IGNITION SYSTEM AUDIBLE TEST WITH NO FAULTS FOUND PER AMM 74-00-00. STARTED NR 1 ENGINE ON L/H IGNITER MULTIPLE TIMES PER AMM 71-00-00 WITH NO DEFECTS NOTED. PERFORMED REPAIR CONFIRMATION OF FIM TASK 74-21-806 WITH NO FAULTS FOUND. REPAIR CONFIRMATION SUCCESSFUL. IGNITION SELECTOR PLACED FROM BOTH TO LEFT.