Backup for dropping the gear

In a previous article, "Peter Duniho" said:
Still, it doesn't explain why an engine failure would in and of itself cause
the gear to extend. Presumably the hydraulic pressure is still holding the
gear up; the prop thrust would be a backup for that, not the sole mechanism
for holding the gear up. The extension mechanism still would need to be
triggered by airspeed or MP changes.

Right?

If the hydraulic system was still holding pressure, then I think you're
right.


--
Paul Tomblin http://xcski.com/blogs/pt/
What happens if a big asteroid hits the Earth? Judging from realistic
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can assume it will be pretty bad. -- Dave Barry