Ok , the Bells that they use for US army training ( I was informed by Butch Grafton) are certified to fly IFR I am not sure how they are equipped but I would assume they have at least 2 axis autopilot. American Eurocopter obtained an STC for a single example of an AS350BA that was certified single pilot IFR , as well as 2 axis coupled autopilot with failure passivation ( avoids runaways I guess ) they had to install a second generator and a device to ease use of collective in case of hydraulic failure ( only single pump ). This ended up as a very expensive installation .
I do not think there are any 407's certified single pilot IFR although I think there were some 206's ( see s.n 51152 for sale in aeroads) .
http://www.aeroads.ca/cgi-bin/heliad...opter_option=3
The biggest problem on most singles are Single hydraulic and single generator.
Usually it would be the manufacturer that certifies an aircraft for IFR use there will normally be an IFR section in the flight manual which also lists minimum equipment ( is it in the 206 manual ?) , main reason beeing the expense involved in showing compliance to the relevant authorities. Is the Koala certified IFR in the USA ?.
just checked stc dtabase and found:-
STCNumber SH4699SW (Click To Print Record)
Manufacturer BELL HELICOPTER TEXTRON (A DIVISION OF TEXTRON CANADA)
MakeModel 206L-1, 206L-3
TCNumber H2SW
Description Installation of single pilot IFR kit.
Status Reissued 2/9/83
ACO SW
STCHolder Bell Helicopter Textron
P.O. Box 482
Dept 81, Mail Stop 1303
Fort Worth TEXAS 76101-0482 UNITED STATES
[ 29 November 2001: Message edited by: widgeon ]