Interesting.

14 CFR 61-3(e) takes care of the pilot but the original question pertained
to motor gliders.

AC 21 17-2(a) states:
h. Section 91.205 of the FAR. Powered gliders are considered to be powered
aircraft for the
purpose of complying with § 91.205.

91.205, of course, specifies the requirements for flying IFR.

A distinction must be made between flying IFR and flying in clouds.

While I doubt any motor glider can meet the requirements for flying IFR (and
no unpowered glider can), flying in clouds in uncontrolled airspace seems to
be a simple matter of having an instrument rating and having no day VFR
restrictions in your glider handbook or operating restrictions.

In uncontrolled airspace, you can do just about anything you want, if
properly certificated. The problem is finding uncontrolled airspace.

Allan


"Mark James Boyd" wrote in message
news:40e9c2ea$1@darkstar...
In the USA:

(e) Instrument rating. No person may act as pilot in command of a civil
aircraft under IFR or in weather conditions less than the minimums
prescribed for VFR flight unless that person holds:

(3) For a glider, a pilot certificate with a glider category rating and an
airplane instrument rating; or


.......Snip.....