[Code of Federal Regulations]

[Title 14, Volume 1]

[Revised as of January 1, 2006]

From the U.S. Government Printing Office via GPO Access

[CITE: 14CFR27.73]



[Page 573]

 

                     TITLE 14--AERONAUTICS AND SPACE

 

CHAPTER I--FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION

 

PART 27_AIRWORTHINESS STANDARDS: NORMAL CATEGORY ROTORCRAFT--Table 

of Contents

 

                            Subpart B_Flight

 

Sec. 27.73  Performance at minimum operating speed.



    (a) For helicopters--

    (1) The hovering ceiling must be determined over the ranges of 

weight, altitude, and temperature for which certification is requested, 

with--

    (i) Takeoff power;

    (ii) The landing gear extended; and

    (iii) The helicopter in ground effect at a height consistent with 

normal takeoff procedures; and

    (2) The hovering ceiling determined under paragraph (a)(1) of this 

section must be at least--

    (i) For reciprocating engine powered helicopters, 4,000 feet at 

maximum weight with a standard atmosphere; or

    (ii) For turbine engine powered helicopters, 2,500 feet pressure 

altitude at maximum weight at a temperature of standard +40 degrees F.

    (b) For rotorcraft other than helicopters, the steady rate of climb 

at the 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.