Sparking on the 737 engine front stage
Hi all,
I work at an airfield above the Artic circle and we use a lot of sand to keep the ramp etc free of ice.
I have noticed when 737s have their engines running, sparks / flashes around the outer part of the disc, next to the engine casing. Looks good but it got me wondering.
Is this sparking caused by sand particles being ingested into the engine when they strike the fan blades ? And as I was always under the impression that only fresh air was meant to pass through the engine, where does this fit in with FOD ingestion / damage ?
Thanks for any answers !
C130JB