Section 121.203

14 CFR Ch. I (1-1-19 Edition)

minute greater than the rate in the approved performance data. Before approving such a procedure, the Administrator considers the following for the
route, route segment, or area concerned:
(1) The reliability of wind and weather forecasting.
(2) The location and kinds of navigation aids.
(3) The prevailing weather conditions, particularly the frequency and
amount of turbulence normally encountered.
(4) Terrain features.
(5) Air traffic control problems.
(6) Any other operational factors
that affect the operation.
(c) For the purposes of this section, it
is assumed that - 
(1) The critical engine is inoperative;
(2) The propeller of the inoperative
engine is in the minimum drag position;
(3) The wing flaps and landing gear
are in the most favorable position;
(4) The operating engines are operating at the maximum continuous
power available;
(5) The airplane is operating in standard atmosphere; and
(6) The weight of the airplane is progressively reduced by the anticipated
consumption of fuel and oil.

(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 121.205 Nontransport category airplanes: Landing limitations: Alternate airport.
No person may list an airport as an
alternate airport in a dispatch or flight
release for a nontransport category airplane unless that airplane (at the
weight anticipated at the time of arrival) based on the assumptions contained in Section 121.203, can be brought to a
full stop landing within 70 percent of
the effective length of the runway.
Section 121.207 Provisionally certificated airplanes: Operating limitations.
In addition to the limitations in
Section 91.317 of this chapter, the following
limitations apply to the operation of
provisionally certificated airplanes by
certificate holders:
(a) In addition to crewmembers, each
certificate holder may carry on such an
airplane only those persons who are
listed in Section 121.547(c) or who are specifically authorized by both the certificate
holder and the Administrator.
(b) Each certificate holder shall keep
a log of each flight conducted under
this section and shall keep accurate
and complete records of each inspection made and all maintenance performed on the airplane. The certificate
holder shall make the log and records
made under this section available to
the manufacturer and the Administrator.

Section 121.203 Nontransport category airplanes: Landing limitations: Destination airport.
(a) No person operating a nontransport category airplane may take
off that airplane at a weight that - 
(1) Allowing for anticipated consumption of fuel and oil, is greater than the
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 purposes of this section,
it is assumed that - 

[Doc. No. 28154, 61 FR 2611, Jan. 26, 1996]

Subpart J - Special Airworthiness
Requirements
SOURCE: Docket No. 6258, 29 FR 19202, Dec.
31, 1964, unless otherwise noted.

Section 121.211 Applicability.
(a) This subpart prescribes special
airworthiness requirements applicable

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