A340-600 scheduled igniter plugs replacement on the Rolls Royce Trent 500 engine. Replacement of the igniter plugs is quite an easy task, the most work is the preparation and getting the access to the igniter plugs. You have to pull the circuit breakers, open the fan cowls, inhibit the thrust reverser and open the reverser cowls. There are two igniter plugs installed, one for system A and one for system B. After the replacement it is mandatory to perform an ignition test where a second mechanic has to check audible if the igniters are sparking. The 20k volt ignition system is used during engine start, takeoff thrust, engine flame out detection and approach idle. One igniter plug costs about 2500,- USD and will be replaced every 1250 flight cycles. This is not a tutorial ! Always stick to the actual maintenance manual ! #aviation #aircraftmaintenance #aircraftmechanic #lufthansa #airbus #a340 #a340thursday #rollsroyce #trent500 #ilovemyjob