Required Rest
Mate,
Close. The rules (both 121 and 135 although the rule language is different) states that the certificate holder can not require any activity during a required rest period. FAA general counsel has, in writing, stated that a single telephone call for the purpose of making, modifying or verifying a flight assignment does not interrupt required rest.
The new rules to be contained in 135 will more clearly define these kinds of issues, at least I was told so when the Working Groups met.
TransMach