Federal Aviation Administration, DOT

Section 121.161

(e), and was type certificated in the
commuter category.
(f) Other nontransport category airplanes. No certificate holder may operate under this part a nontransport category airplane type certificated after
December 31, 1964, unless it meets the
applicable requirements of Section 121.173 (a),
(b), (d), and (e), was manufactured before March 20, 1997, and meets one of
the following:
(1) Until December 20, 2010:
(i) The airplane was type certificated
in the normal category before July 1,
1970, and meets special conditions
issued by the Administrator for airplanes intended for use in operations
under part 135 of this chapter.
(ii) The airplane was type certificated in the normal category before
July 19, 1970, and meets the additional
airworthiness standards in SFAR No.
23, 14 CFR part 23.
(iii) The airplane was type certificated in the normal category and
meets the additional airworthiness
standards in appendix A of part 135 of
this chapter.
(iv) The airplane was type certificated in the normal category and complies with either section 1.(a) or 1.(b) of
SFAR No. 41 of 14 CFR part 21.
(2) The airplane was type certificated
in the normal category, meets the additional requirements described in
paragraphs (f)(1)(i) through (f)(1)(iv) of
this section, and meets the performance requirements in appendix K of
this part.
(g) Certain newly manufactured airplanes. No certificate holder may operate an airplane under this part that
was type certificated as described in
paragraphs (f)(1)(i) through (f)(1)(iv) of
this section and that was manufactured after March 20, 1997, unless it
meets the performance requirements in
appendix K of this part.
(h) Newly type certificated airplanes.
No person may operate under this part
an airplane for which the application
for a type certificate is submitted after
March 29, 1995, unless the airplane is
type certificated under part 25 of this
chapter.

Section 121.159 Single-engine airplanes prohibited.
No certificate holder may operate a
single-engine airplane under this part.
[Doc. No. 28154, 60 FR 65927, Dec. 20, 1995]

Section 121.161 Airplane limitations: Type of
route.
(a) Except as provided in paragraph
(e) of this section, unless approved by
the Administrator in accordance with
Appendix P of this part and authorized
in the certificate holder-s operations
specifications, no certificate holder
may operate a turbine-engine-powered
airplane over a route that contains a
point - 
(1) Farther than a flying time from
an Adequate Airport (at a one-engineinoperative cruise speed under standard conditions in still air) of 60 minutes for a two-engine airplane or 180
minutes for a passenger-carrying airplane with more than two engines;
(2) Within the North Polar Area; or
(3) Within the South Polar Area.
(b) Except as provided in paragraph
(c) of this section, no certificate holder
may operate a land airplane (other
than a DC-3, C-46, CV-240, CV-340, CV-
440, CV-580, CV-600, CV-640, or Martin
404) in an extended overwater operation
unless it is certificated or approved as
adequate for ditching under the ditching provisions of part 25 of this chapter.
(c) Until December 20, 2010, a certificate holder may operate, in an extended overwater operation, a nontransport category land airplane type
certificated after December 31, 1964,
that was not certificated or approved
as adequate for ditching under the
ditching provisions of part 25 of this
chapter.
(d) Unless authorized by the Administrator based on the character of the
terrain, the kind of operation, or the
performance of the airplane to be used,
no certificate holder may operate a reciprocating-engine-powered
airplane
over a route that contains a point farther than 60 minutes flying time (at a
one-engine-inoperative cruise speed
under standard conditions in still air)
from an Adequate Airport.

[Doc. No. 6258, 29 FR 19197, Dec. 31, 1964, as
amended by Amdt. 121-251, 60 FR 65927, Dec.
20, 1995; Amdt. 121-256, 61 FR 30434, June 14,
1996]

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