Aladdinsane
7th Jul 2003, 20:13
Can anyone inform me or send me in the right direction to find about published helicopter dB levels, in particular BK117's??
Thanks
Aladdin
Ascend Charlie
8th Jul 2003, 07:25
Look in ICAO Annex 16, Volume 1, Chapter 8.
The BK has already been judged by CASA to be quiet enough to use R405, despite the 2500kg limit on other machines. See ERSA FAC-S 313.
Talk to Dan Tyler at Careflight or Steven Cooper, a noise expert, lives in Hunters Hill if you have a fone book.