Originally Posted by
zondaracer
A Beech 1900 could be operated under part 135 for non-scheduled operations. Scheduled operations would be part 121. Great Lakes got a supplemental type certificate for 9 seats, so they can operate the 9 seat version as part 135 on scheduled operations.
0-9 seats - part 135 scheduled or non scheduled
10-30 seats - part 135 non scheduled only
Yup, that's the way Great Lakes changed configuration so they could avoid the new 121 rules for FO's requiring an ATP certificate. Under 135, they can still use right-seaters with way less time and only a commercial pilot certificate.
Just to confuse things even more, I may be wrong, but I believe there are several freight operators using 1900's, single pilot, under 135 for freight-only. The Metroliner and EMB 110 work for this, too, 135 freight ops.