Section 121.162

14 CFR Ch. I (1-1-19 Edition)
chapter unless an airplane of that type
has had, in addition to the airplane
certification tests, at least 100 hours of
proving tests acceptable to the Administrator, including a representative
number of flights into en route airports. The requirement for at least 100
hours of proving tests may be reduced
by the Administrator if the Administrator determines that a satisfactory
level of proficiency has been demonstrated to justify the reduction. At
least 10 hours of proving flights must
be flown at night; these tests are irreducible.
(b) Proving tests for kinds of operations.
Unless otherwise authorized by the Administrator, for each type of airplane,
a certificate holder must conduct at
least 50 hours of proving tests acceptable to the Administrator for each kind
of operation it intends to conduct, including a representative number of
flights into en route airports.
(c) Proving tests for materially altered
airplanes. Unless otherwise authorized
by the Administrator, for each type of
airplane that is materially altered in
design, a certificate holder must conduct at least 50 hours of proving tests
acceptable to the Administrator for
each kind of operation it intends to
conduct with that airplane, including a
representative number of flights into
en route airports.
(d) Definition of materially altered. For
the purposes of paragraph (c) of this
section, a type of airplane is considered
to be materially altered in design if the
alteration includes - 
(1) The installation of powerplants
other than those of a type similar to
those with which it is certificated; or
(2) Alterations to the aircraft or its
components that materially affect
flight characteristics.
(e) No certificate holder may carry
passengers in an aircraft during proving tests, except for those needed to
make the test and those designated by
the Administrator. However, it may
carry mail, express, or other cargo,
when approved.

(e) Operators of turbine-engine powered airplanes with more than two engines do not need to meet the requirements of paragraph (a)(1) of this section until February 15, 2008.
[Doc. No. 7329, 31 FR 13078, Oct. 8, 1966, as
amended by Amdt. 121-162, 45 FR 46739, July
10, 1980; Amdt. 121-251, 60 FR 65927, Dec. 20,
1995; Amdt. 121-329, 72 FR 1879, Jan. 16, 2007]

Section 121.162 ETOPS Type Design Approval Basis.
Except for a passenger-carrying airplane with more than two engines manufactured prior to February 17, 2015 and
except for a two-engine airplane that,
when used in ETOPS, is only used for
ETOPS of 75 minutes or less, no certificate holder may conduct ETOPS unless
the airplane has been type design approved for ETOPS and each airplane
used in ETOPS complies with its CMP
document as follows:
(a) For a two-engine airplane, that is
of the same model airplane-engine
combination that received FAA approval for ETOPS up to 180 minutes
prior to February 15, 2007, the CMP
document for that model airplane-engine combination in effect on February
14, 2007.
(b) For a two-engine airplane, that is
not of the same model airplane-engine
combination that received FAA approval for ETOPS up to 180 minutes before February 15, 2007, the CMP document for that new model airplane-engine combination issued in accordance
with Section 25.3(b)(1) of this chapter.
(c) For a two-engine airplane approved for ETOPS beyond 180 minutes,
the CMP document for that model airplane-engine combination issued in accordance with Section 25.3(b)(2) of this chapter.
(d) For an airplane with more than 2
engines manufactured on or after February 17, 2015, the CMP document for
that model airplane-engine combination issued in accordance with Section 25.3(c)
of this chapter.
[Doc. No. FAA-2002-6717, 72 FR 1879, Jan. 16,
2007]

Section 121.163 Aircraft proving tests.
(a) Initial airplane proving tests. No
person may operate an airplane not before proven for use in a kind of operation under this part or part 135 of this

[Doc. No. 6258, 29 FR 19197, Dec. 31, 1964, as
amended by Amdt. 121-42, 33 FR 10330, July
19, 1968; 34 FR 13468, Aug. 21, 1969; Amdt. 121-
162, 45 FR 46739, July 10, 1980; Amdt. 121-251,
60 FR 65927, Dec. 20, 1995]

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