Federal Aviation Administration, DOT

Section 135.387

below from a point 50 feet above the
intersection of the obstruction clearance plane and the runway. For the
purpose of determining the allowable
landing weight at the destination airport the following is assumed:
(1) The airplane is landed on the most
favorable runway and in the most favorable direction, in still air.
(2) The airplane is landed on the most
suitable runway considering the probable wind velocity and direction and
the ground handling characteristics of
the airplane, and considering other
conditions such as landing aids and terrain.
(c) A turbopropeller powered airplane
that would be prohibited from being
taken off because it could not meet
paragraph (b)(2) of this section, may be
taken off if an alternate airport is selected that meets all of this section except that the airplane can accomplish a
full stop landing within 70 percent of
the effective length of the runway.
(d) Unless, based on a showing of actual operating landing techniques on
wet runways, a shorter landing distance (but never less than that required by paragraph (b) of this section)
has been approved for a specific type
and model airplane and included in the
Airplane Flight Manual, no person may
take off a turbojet airplane when the
appropriate weather reports or forecasts, or any combination of them, indicate that the runways at the destination airport may be wet or slippery at
the estimated time of arrival unless
the effective runway length at the destination airport is at least 115 percent
of the runway length required under
paragraph (b) of this section.
(e) A turbojet airplane that would be
prohibited from being taken off because it could not meet paragraph
(b)(2) of this section may be taken off if
an alternate airport is selected that
meets all of paragraph (b) of this section.
(f) An eligible on-demand operator
may take off a turbine engine powered
large transport category airplane on an
on-demand flight if all of the following
conditions exist:
(1) The operation is permitted by an
approved Destination Airport Analysis
in that person-s operations manual.

(2) The airplane-s weight on arrival,
allowing for normal consumption of
fuel and oil in flight (in accordance
with the landing distance in the Airplane Flight Manual for the elevation
of the destination airport and the wind
conditions expected there at the time
of landing), would allow a full stop
landing at the intended destination airport within 80 percent of the effective
length of each runway described below
from a point 50 feet above the intersection of the obstruction clearance plane
and the runway. For the purpose of determining the allowable landing weight
at the destination airport, the following is assumed:
(i) The airplane is landed on the most
favorable runway and in the most favorable direction, in still air.
(ii) The airplane is landed on the
most suitable runway considering the
probable wind velocity and direction
and the ground handling characteristics of the airplane, and considering
other conditions such as landing aids
and terrain.
(3) The operation is authorized by operations specifications.
[Doc. No. 16097, 43 FR 46783, Oct. 10, 1978, as
amended by Amdt. 135-91, 68 FR 54588, Sept.
17, 2003]

Section 135.387 Large transport category airplanes: Turbine engine powered:
Landing limitations: Alternate airports.
(a) Except as provided in paragraph
(b) of this section, no person may select an airport as an alternate airport
for a turbine engine powered large
transport category airplane unless
(based
on
the
assumptions
in
Section 135.385(b)) that airplane, at the weight
expected at the time of arrival, can be
brought to a full stop landing within 70
percent of the effective length of the
runway for turbo-propeller-powered
airplanes and 60 percent of the effective length of the runway for turbojet
airplanes, from a point 50 feet above
the intersection of the obstruction
clearance plane and the runway.
(b) Eligible on-demand operators may
select an airport as an alternate airport for a turbine engine powered large
transport category airplane if (based
on the assumptions in Section 135.385(f)) that
airplane, at the weight expected at the

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