SDR ASAA2022072039196

Service difficulty report · Ignition Sys · Boeing 7379

Difficulty date: July 20, 2022
Submitted: July 25, 2022
Operation: Air carrier
Aircraft: N291BT
Make and model: Boeing 7379
Aircraft serial: 44088
Aircraft time: 3,798 hours, 1,091 cycles
Engine: Cfmint LEAP1B28
System (JASC): 7420 · Ignition Harness (Distribution)
Part: Ignition Sys
Condition: Warning Light
Stage of operation: LD
How discovered: V
Nature of condition: J
Precautionary procedure: K

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

What was found

MAINT LIGHT ON OVERHEAD PANEL ILLUMINATED UPON LANDING. GROUNDED - YES. FOUND FAULTS FOR ENG1 AND ENG2 IGNITION LEFT RELEASED PER MEL 74-00-01B BOTH LT HAND IGN INOP. REPLACED IGNITION SWITCH S858 REF B737-9 WDM 74-31-11-1 PERFORMED EEC IGNITION TEST CHAN A+B ON ENG #1+#2 REF AMM 71-00-00-730-804/805-G00 ALL TEST PASSED PERFORMED ENG RUNS WITH IGNITION SWITCH IN LEFT POSITION OPS NORMAL. NO FAULTS COULD BE VERIFIED ALL FAULTS ON A/C HISTORY ARE MISSING. NO ACTIVE FAULTS. MAINT LIGHT IS EXTINGUISHED.

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