Federal Aviation Administration, DOT

Section 29.59

minimum operating speed must be determined over the ranges of weight, altitude, and temperature for which certification is requested with - 
(1) Takeoff power; and
(2) The landing gear extended.

(c) Determination of the TDP must
include the pilot recognition time interval following failure of the critical
engine.

[Doc. No. 24802, 61 FR 21898, May 10, 1996; 61
FR 33963, July 1, 1996]

Section 29.59 Takeoff path: Category A.
(a) The takeoff path extends from the
point of commencement of the takeoff
procedure to a point at which the
rotorcraft is 1,000 feet above the takeoff surface and compliance with
Section 29.67(a)(2) is shown. In addition - 
(1) The takeoff path must remain
clear of the height-velocity envelope
established in accordance with Section 29.87;
(2) The rotorcraft must be flown to
the engine failure point; at which
point, the critical engine must be made
inoperative and remain inoperative for
the rest of the takeoff;
(3) After the critical engine is made
inoperative, the rotorcraft must continue to the takeoff decision point, and
then attain VTOSS;
(4) Only primary controls may be
used while attaining VTOSS and while
establishing a positive rate of climb.
Secondary controls that are located on
the primary controls may be used after
a positive rate of climb and VTOSS are
established but in no case less than 3
seconds after the critical engine is
made inoperative; and
(5) After attaining VTOSS and a positive rate of a climb, the landing gear
may be retracted.
(b) During the takeoff path determination made in accordance with
paragraph (a) of this section and after
attaining VTOSS and a positive rate of
climb, the climb must be continued at
a speed as close as practicable to, but
not less than, VTOSS until the rotorcraft
is 200 feet above the takeoff surface.
During this interval, the climb performance must meet or exceed that required by Section 29.67(a)(1).
(c) During the continued takeoff, the
rotorcraft shall not descend below 15
feet above the takeoff surface when the
takeoff decision point is above 15 feet.
(d) From 200 feet above the takeoff
surface, the rotorcraft takeoff path
must be level or positive until a height
1,000 feet above the takeoff surface is
attained with not less than the rate of
climb required by Section 29.67(a)(2). Any secondary or auxiliary control may be

Section 29.51 Takeoff data: general.
(a) The takeoff data required by
SectionSection 29.53, 29.55, 29.59, 29.60, 29.61, 29.62,
29.63, and 29.67 must be determined - 
(1) At each weight, altitude, and temperature selected by the applicant; and
(2) With the operating engines within
approved operating limitations.
(b) Takeoff data must - 
(1) Be determined on a smooth, dry,
hard surface; and
(2) Be corrected to assume a level
takeoff surface.
(c) No takeoff made to determine the
data required by this section may require exceptional piloting skill or
alertness, or exceptionally favorable
conditions.
[Doc. No. 5084, 29 FR 16150, Dec. 3, 1964, as
amended by Amdt. 29-39, 61 FR 21899, May 10,
1996]

Section 29.53 Takeoff: Category A.
The takeoff performance must be determined and scheduled so that, if one
engine fails at any time after the start
of takeoff, the rotorcraft can - 
(a) Return to, and stop safely on, the
takeoff area; or
(b)
Continue
the
takeoff
and
climbout, and attain a configuration
and airspeed allowing compliance with
Section 29.67(a)(2).

spaschal on DSK3GDR082PROD with CFR

[Doc. No. 24802, 61 FR 21899, May 10, 1996; 61
FR 33963, July 1, 1996]

Section 29.55 Takeoff decision point (TDP):
Category A.
(a) The TDP is the first point from
which a continued takeoff capability is
assured under Section 29.59 and is the last
point in the takeoff path from which a
rejected takeoff is assured within the
distance determined under Section 29.62.
(b) The TDP must be established in
relation to the takeoff path using no
more than two parameters; e.g., airspeed and height, to designate the
TDP.

[Doc. No. 24802, 61 FR 21899, May 10, 1996]

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