(a) Except as provided in paragraph (b) of this section, no person may
operate the following airplanes without a pilot who is designated as
second in command of that airplane:
(1) A large airplane, except that a person may operate an airplane
certificated under SFAR 41 without a pilot who is designated as second in
command if that airplane is certificated for operation with one pilot.
(2) A turbojet-powered multiengine airplane for which two pilots are
required under the type certification requirements for that airplane.
(3) A commuter category airplane, except that a person may operate a
commuter category airplane notwithstanding paragraph (a)(1) of this
section, that has a passenger seating configuration, excluding pilot
seats, of nine or less without a pilot who is designated as second in
command if that airplane is type certificated for operations with one
(b) The Administrator may issue a letter of authorization for the
operation of an airplane without compliance with the requirements of
paragraph (a) of this section if that airplane is designed for and type
certificated with only one pilot station. The authorization contains any
conditions that the Administrator finds necessary for safe operation.
(c) No person may designate a pilot to serve as second in command, nor
may any pilot serve as second in command, of an airplane required under
this section to have two pilots unless that pilot meets the qualifications
for second in command prescribed in §61.55 of this chapter.