(a) Except as provided in §91.715, no person may operate a civil
aircraft unless it has within it the following:
(1) An appropriate and current airworthiness certificate. Each U.S.
airworthiness certificate used to comply with this subparagraph (except a
special flight permit, a copy of the applicable operations specifications
issued under §21.197(c) of this chapter, appropriate sections of the air
carrier manual required by parts 121 and 135 of this chapter containing
that portion of the operations specifications issued under §21.197(c), or
an authorization under §91.611) must have on it the registration number
assigned to the aircraft under part 47 of this chapter. However, the
airworthiness certificate need not have on it an assigned special
identification number before 10 days after that number is first affixed to
the aircraft. A revised airworthiness certificate having on it an assigned
special identification number, that has been affixed to an aircraft, may
only be obtained upon application to an FAA Flight Standards district
(2) An effective U.S. registration certificate issued to its owner or,
for operation within the United States, the second duplicate copy (pink)
of the Aircraft Registration Application as provided for in §47.31(b), or
a registration certificate issued under the laws of a foreign country.
(b) No person may operate a civil aircraft unless the airworthiness
certificate required by paragraph (a) of this section or a special flight
authorization issued under §91.715 is displayed at the cabin or cockpit
entrance so that it is legible to passengers or crew.
(c) No person may operate an aircraft with a fuel tank installed within
the passenger compartment or a baggage compartment unless the installation
was accomplished pursuant to part 43 of this chapter, and a copy of FAA
Form 337 authorizing that installation is on board the aircraft.
(d) No person may operate a civil airplane (domestic or foreign) into
or out of an airport in the United States unless it complies with the fuel
venting and exhaust emissions requirements of part 34 of this chapter.