Squawk,
Many apologies for the delay but we have had numerous problems with the analysis software. All sorted now.
I conducted a test in a PA38 over 1.5 hours with the sound meter sitting unprotected in the cockpit whilst I flew a series of circuits (I figured this would produce the highest noise level over the limited time period, given the amount of full power operations).
Nedless to say, the unprotected noise level was above the threshold requiring hearing protection at 92.5dB(A) but 28 dB NRR protection would provide adequate protection.
If you or anyone would like to take a look at the detailed analysis file (MS Excel) I would be more than happy to send it on (with an obvious disclaimer). Sorry, I don't have a host at the moment to which I can provide a link.
And if anyone is going on a trip in a light twin and would like a similar analysis done, pro bono, I would be more than happy to come along.
Best Regards,
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