Vmax8
Using my helmet in a R22 or R44 is kind of a problem, as the low RRPM warning horn gets so muffled by the sound isolation of the helmet, that it's hardly noticeable. Therefore I prefer not to use a helmet on these aircrafts as I worry I won't hear the horn in a low RRPM situation. Is there any solution to it?
I don't think a helmet gives much more 'muffling' than a decent headset, does it?
Anyway, it would seem after a bit of a google, that it isn't too much of a problem out there
heli-college.com however, perhaps there are some other issues that may need attention first !!!
"
... one day I had a solo flight to OKC for maintanance, and had my music cranked up a little louder than when I have pax with me (not excessivly loud) and was surprised that I could barely hear the horn on my check. "
Helmet Comms - Vertical Reference Helicopter Forums
On a more serious and useful note, I wonder what the follow up on this was;
The FAA Technical Panel Final Report (17 March 1995) proposed the following:
Design Changes
An improved engine RPM governor
An increased low rotor RPM warning threshold.
Provide low rotor RPM warning horn through the intercom system.
http://www.aaiu.ie/sites/default/fil...4%20EI-MAC.pdf