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Old December 3rd 07, 02:17 AM posted to rec.aviation.piloting, rec.aviation.homebuilt
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Default Spinner strobing as a "Bird Strike Countermeasure"

On Dec 2, 5:59 pm, "Roger (K8RI)" wrote:
On Sun, 2 Dec 2007 17:02:07 -0600, "Maxwell"
wrote:

That's used to let people on the ground know if the engine is still
turning. An engine coasting to a stop is nearly silent and is silent
if you are out on the ramp wearing hearing protection.

Roger (K8RI)


Incorrect. The spiral on the fan hub is a bird deterrent measure. It
has nothing to do with ground personnel.