Was in 2008 on board of new AW139VIP
ANR system was active, do not remember
marketing name, but remember that 3rd antivibration
was built in. Have asked switch system on loudspeakers,
than to earphones and finally to switch off.
My estimation was 50% improvement....on active system,
and noise level less than in Q400 fix wing.
Last edited by 9Aplus; 10th Mar 2010 at 17:55.