Federal Aviation Administration, DOT

Section 135.399

weight that would allow a full stop
landing within 60 percent of the effective length of the most suitable runway at the destination airport; and
(2) Is greater than the weight allowable if the landing is to be made on the
runway - 
(i) With the greatest effective length
in still air; and
(ii) Required by the probable wind,
taking into account not more than 50
percent of the headwind component or
not less than 150 percent of the tailwind component.
(b) For the purpose of this section, it
is assumed that - 
(1) The airplane passes directly over
the intersection of the obstruction
clearance plane and the runway at a
height of 50 feet in a steady gliding approach at a true indicated airspeed of
at least 1.3 Vso;
(2) The landing does not require exceptional pilot skill; and
(3) The airplane is operating in standard atmosphere.
Section 135.395 Large nontransport category
airplanes: Landing limitations: Alternate airports.
No person may select an airport as
an alternate airport for a large nontransport category airplane unless that
airplane (at the weight anticipated at
the time of arrival), based on the assumptions in Section 135.393(b), can be
brought to a full stop landing within 70
percent of the effective length of the
runway.
Section 135.397 Small transport category airplane performance operating limitations.
(a) No person may operate a reciprocating engine powered small transport
category airplane unless that person
complies with the weight limitations
in Section 135.365, the takeoff limitations in
Section 135.367 (except paragraph (a)(3)), and
the landing limitations in SectionSection 135.375 and
135.377.
(b) No person may operate a turbine
engine powered small transport category airplane unless that person complies with the takeoff limitations in
Section 135.379 (except paragraphs (d) and (f))
and the landing limitations in SectionSection 135.385
and 135.387.

Section 135.398 Commuter category airplanes
performance operating limitations.
(a) No person may operate a commuter category airplane unless that
person complies with the takeoff
weight limitations in the approved Airplane Flight Manual.
(b) No person may take off an airplane type certificated in the commuter category at a weight greater
than that listed in the Airplane Flight
Manual that allows a net takeoff flight
path that clears all obstacles either by
a height of at least 35 feet vertically,
or at least 200 feet horizontally within
the airport boundaries and by at least
300 feet horizontally after passing the
boundaries.
(c) No person may operate a commuter category airplane unless that
person complies with the landing limitations prescribed in SectionSection 135.385 and
135.387 of this part. For purposes of this
paragraph, SectionSection 135.385 and 135.387 are applicable to all commuter category airplanes notwithstanding their stated applicability to turbine-engine-powered
large transport category airplanes.
(d)
In
determining
maximum
weights, minimum distances and flight
paths under paragraphs (a) through (c)
of this section, correction must be
made for the runway to be used, the
elevation of the airport, the effective
runway gradient, and ambient temperature, and wind component at the
time of takeoff.
(e) For the purposes of this section,
the assumption is that the airplane is
not banked before reaching a height of
50 feet as shown by the net takeoff
flight path data in the Airplane Flight
Manual and thereafter the maximum
bank is not more than 15 degrees.
[Doc. No. 23516, 52 FR 1836, Jan. 15, 1987]

Section 135.399 Small nontransport category
airplane performance operating
limitations.
(a) No person may operate a reciprocating engine or turbopropeller-powered small airplane that is certificated
under Section 135.169(b) (2), (3), (4), (5), or (6)
unless that person complies with the
takeoff weight limitations in the approved Airplane Flight Manual or
equivalent for operations under this
part, and, if the airplane is certificated
under Section 135.169(b) (4) or (5) with the

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