Section 135.353
Section 135.353

14 CFR Ch. I (1-1-19 Edition)
[Reserved]

Subpart I - Airplane Performance
Operating Limitations
Section 135.361 Applicability.
(a) This subpart prescribes airplane
performance operating limitations applicable to the operation of the categories of airplanes listed in Section 135.363
when operated under this part.
(b) For the purpose of this subpart,
effective length of the runway, for landing means the distance from the point
at which the obstruction clearance
plane associated with the approach end
of the runway intersects the centerline
of the runway to the far end of the runway.
(c) For the purpose of this subpart,
obstruction clearance plane means a
plane sloping upward from the runway
at a slope of 1:20 to the horizontal, and
tangent to or clearing all obstructions
within a specified area surrounding the
runway as shown in a profile view of
that area. In the plan view, the centerline of the specified area coincides with
the centerline of the runway, beginning
at the point where the obstruction
clearance plane intersects the centerline of the runway and proceeding to a
point at least 1,500 feet from the beginning point. After that the centerline
coincides with the takeoff path over
the ground for the runway (in the case
of takeoffs) or with the instrument approach counterpart (for landings), or,
where the applicable one of these paths
has not been established, it proceeds
consistent with turns of at least 4,000foot radius until a point is reached beyond which the obstruction clearance
plane clears all obstructions. This area
extends laterally 200 feet on each side
of the centerline at the point where the
obstruction clearance plane intersects
the runway and continues at this width
to the end of the runway; then it increases uniformly to 500 feet on each
side of the centerline at a point 1,500
feet from the intersection of the obstruction clearance plane with the runway; after that it extends laterally 500
feet on each side of the centerline.
Section 135.363 General.
(a) Each certificate holder operating
a reciprocating engine powered large

transport category airplane shall comply with SectionSection 135.365 through 135.377.
(b) Each certificate holder operating
a turbine engine powered large transport category airplane shall comply
with SectionSection 135.379 through 135.387, except
that when it operates a turbopropellerpowered large transport category airplane certificated after August 29, 1959,
but previously type certificated with
the same number of reciprocating engines, it may comply with SectionSection 135.365
through 135.377.
(c) Each certificate holder operating
a large nontransport category airplane
shall comply with SectionSection 135.389 through
135.395 and any determination of compliance must be based only on approved
performance data. For the purpose of
this subpart, a large nontrans- port
category airplane is an airplane that
was type certificated before July 1,
1942.
(d) Each certificate holder operating
a small transport category airplane
shall comply with Section 135.397.
(e) Each certificate holder operating
a small nontransport category airplane
shall comply with Section 135.399.
(f) The performance data in the Airplane Flight Manual applies in determining compliance with SectionSection 135.365
through 135.387. Where conditions are
different from those on which the performance data is based, compliance is
determined by interpolation or by computing the effects of change in the specific variables, if the results of the interpolation or computations are substantially as accurate as the results of
direct tests.
(g) No person may take off a reciprocating engine powered large transport
category airplane at a weight that is
more than the allowable weight for the
runway being used (determined under
the runway takeoff limitations of the
transport category operating rules of
this subpart) after taking into account
the temperature operating correction
factors in section 4a.749a-T or section
4b.117 of the Civil Air Regulations in
effect on January 31, 1965, and in the
applicable Airplane Flight Manual.
(h) The Administrator may authorize in the operations specifications deviations from this subpart if special
circumstances make a literal observ-

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