Rotax 582 sudden stoppage ?

[Jean Crous]

The aircraft mentioned in the accidents and incidents thread, has come to my facility for repair. Part of the excercise is , ofcourse, to establish the cause of this accident. According to the PIC and co-pilot, there was a lot of heavy static just before the motor cut out. The PIC said it was "as if someone had turned the mags off" , that is how sudden the stoppage was. On arrival at my w/shop we turned the motor with the mags on, and there was spark with both mags......now the puzzelling questions start. Can it be coil breakdown, or a stator problem ? Has anyone got some advice as to where the most likely place would be to start looking ? BTW there were NO fuel related problems at all.
Regards
Jean Crous.

[Duck Rogers]

It's unlikely to be a coil breakdown as both coils would have to quit simultaneously for the engine to die (dual ignition)
I would start looking for the chafed magneto wires that shorted to earth (or the faulty mag switch) causing the "mags to be turned off" and then you'll also find the source of the static.
Magneto stator coil would be last place I'd go looking

[Jean Crous]

Baie dankie Oom Eend

[Duck Rogers]

And don't rule out a cold seizure if its a silvertop 582. Better check the pistons and sleeves for scoring........
Don't know what the static noise will have to do with a cold seizure though unless it was just coincidental

[Jean Crous]

Gerrie, nee hierdie een is n Blue Top. But that being said, we will still look for signs of cold seize, although the pilot said at least 5-7 min spent on run up and taxi before t-off.
Jean.

[Boet]

Oompie Jaan, ga lees de ferkin manual. Die seg: "This enjaain by it`s design is prone to sudden stoppages ens ens " ............. Maar ons koop dit wragtig!

Ht jy al die fout gekry?? Hu, hu, vertel vi ons ook??

[Jean Crous]

Oompie Boet, ek skeer my gat vir jou se-goed... . Nee ek moet nog die enjin na Louis toe neem , hy sal seker kan vasstel wat verkeerd gegaan het.
Oor daai se manual, jjjjaaaa......ekke het hom galees, maar tja-wragtag on koop hom nogsteeds
Jean.

[Boet]

Nou hoekom het hy gesudden stopage? Mmmmm???? Virtel vi ons ook?????

[Duck Rogers]

Nou hoekom het hy gesudden stopage? Mmmmm???? Virtel vi ons ook?????

Want hy kan...........because dit sê so oppie boks en innie pamfletjie...

[Jean Crous]

Oompie Boet, en Oom Eend,.........Baas Louis se dit was seizure op die agterste cylinder. Nou dit is my gat se deksel, want so iets gebeur mos nie met n reg verkoelde Blue-Top 582 ?????

BTW Boet, baaaie geluk met daai herhinnering aan toe jy die eerste keer die daglig gesien het Of HAPPY BIRTHDAY
Jean.