This seems to corroborate the statutory language that airport reserve, deadheading, and flight sim time are only part of the same FDP when it occurs BEFORE or IN BETWEEN any assigned flight segment. The regulation is very clear that an FDP ENDS (if flying is assigned) when the plane is in the chocks with no intention of further aircraft movement by the same crewmember. From the FAA "Clarification Letter" in the Federal Register regarding the final 117 rule:

"SWAPA asked for clarification about
the type of duty that is part of an FDP.
SWAPA provided the following three
types of duty as examples, and it asked
which of these examples would be part
of an FDP: (1) duty prior to an FDP; (2)
duty after an FDP; and (3) flight training
device duty after an FDP.
The definition of FDP in § 117.3 states
that ‘‘[a] flight duty period includes the
duties performed by the flightcrew
member on behalf of the certificate
holder that occur before a flight segment
or between flight segments without a required
intervening rest period.’’ Thus,
duty that occurs prior to an FDP is part
of that FDP if there is no required
intervening rest period between the
duty and the flight segments that make
up the FDP. Duty that takes place after
an FDP, such as flight training device
duty, is not part of an FDP, as it does
not occur before a flight segment or
between flight segments"


Available here: http://www.faa.gov/about/office_org/...rification.pdf