Schaumburg ACA P-50 Came Down Today…

[Thesaurus_1003]

soo uh they bought this siren to Sirencon 2024 and the rotor got friction welded to the stator so its very much dead now

[ThatGuy2020]

Message from Snowpix:

Here’s an explanation of what happened to the P-50:
“The P-50 had already been decommissioned previously after seizing from ingesting fibreglass. However, fibreglass ingestion doesn't seem to be the issue here. The rotor was already damaged from coming to a sudden stop before, and likely had microfractures that were undetectable. Those fractures opened up during operation forming a crack, which expanded the rotor until it rubbed against and ultimately friction welded the stator. The videos don't show any fibreglass falling from the siren, even after the siren violently shakes upon failing. In addition, the sound goes flat shortly before the siren fails, which suggests the rotor rubbing against the stator.”