[Code of Federal Regulations]
[Title 14, Volume 2]
[Revised as of January 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 14CFR121.191]

[Page 367]
 
                     TITLE 14--AERONAUTICSAND SPACE
 
CHAPTER I--FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION 
                               (CONTINUED)
 
PART 121--OPERATING REQUIREMENTS: DOMESTIC, FLAG, AND SUPPLEMENTAL
 OPERATIONS--Table of Contents
 
          Subpart I--Airplane Performance Operating Limitations
 
Sec. 121.191  Airplanes: Turbine engine powered: En route limitations: 
One engine inoperative.

    (a) No person operating a turbine engine powered airplane may take 
off that airplane at a weight, allowing for normal consumption of fuel 
and oil, that is greater than that which (under the approved, one engine 
inoperative, en route net flight path data in the Airplane Flight Manual 
for that airplane) will allow compliance with paragraph (a) (1) or (2) 
of this section, based on the ambient temperatures expected en route:
    (1) There is a positive slope at an altitude of at least 1,000 feet 
above all terrain and obstructions within five statute miles on each 
side of the intended track, and, in addition, if that airplane was 
certificated after August 29, 1959 (SR 422B) there is a positive slope 
at 1,500 feet above the airport where the airplane is assumed to land 
after an engine fails.
    (2) The net flight path allows the airplane to continue flight from 
the cruising altitude to an airport where a landing can be made under 
Sec. 121.197, clearing all terrain and obstructions within five statute 
miles of the intended track by at least 2,000 feet vertically and with a 
positive slope at 1,000 feet above the airport where the airplane lands 
after an engine fails, or, if that airplane was certificated after 
September 30, 1958 (SR 422A, 422B), with a positive slope at 1,500 feet 
above the airport where the airplane lands after an engine fails.
    (b) For the purposes of paragraph (a)(2) of this section, it is 
assumed that--
    (1) The engine fails at the most critical point en route;
    (2) The airplane passes over the critical obstruction, after engine 
failure at a point that is no closer to the obstruction than the nearest 
approved radio navigation fix, unless the Administrator authorizes a 
different procedure based on adequate operational safeguards;
    (3) An approved method is used to allow for adverse winds:
    (4) Fuel jettisoning will be allowed if the certificate holder shows 
that the crew is properly instructed, that the training program is 
adequate, and that all other precautions are taken to insure a safe 
procedure;
    (5) The alternate airport is specified in the dispatch or flight 
release and meets the prescribed weather minimums; and
    (6) The consumption of fuel and oil after engine failure is the same 
as the consumption that is allowed for in the approved net flight path 
data in the Airplane Flight Manual.

[Doc. No. 6258, 29 FR 19198, Dec. 31, 1964; 30 FR 130, Jan. 7, 1965, as 
amended by Amdt. 121-143, 43 FR 22641, May 25, 1978]