[Code of Federal Regulations]

[Title 14, Volume 2]

[Revised as of January 1, 2006]

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

[CITE: 14CFR121.101]



[Page 427]

 

                     TITLE 14--AERONAUTICS AND SPACE

 

CHAPTER I--FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION 

                               (CONTINUED)

 

PART 121_OPERATING REQUIREMENTS: DOMESTIC, FLAG, AND SUPPLEMENTAL 

OPERATIONS--Table of Contents

 

       Subpart E_Approval of Routes: Domestic and Flag Operations

 

Sec. 121.101  Weather reporting facilities.



    (a) Each certificate holder conducting domestic or flag operations 

must show that enough weather reporting services are available along 

each route to ensure weather reports and forecasts necessary for the 

operation.

    (b) Except as provided in pararaph (d) of this section, no 

certificate holder conducting domestic or flag operations may use any 

weather report to control flight unless--

    (1) For operations within the 48 contiguous States and the District 

of Columbia, it was prepared by the U.S. National Weather Service or a 

source approved by the U.S. National Weather Service; or

    (2) For operations conducted outside the 48 contiguous States and 

the District of Columbia, it was prepared by a source approved by the 

Administrator.

    (c) Each certificate holder conducting domestic or flag operations 

that uses forecasts to control flight movements shall use forecasts 

prepared from weather reports specified in paragraph (b) of this section 

and from any source approved under its system adopted pursuant to 

paragraph (d) of this section.

    (d) Each certificate holder conducting domestic or flag operations 

shall adopt and put into use an approved system for obtaining forecasts 

and reports of adverse weather phenomena, such as clear air turbulence, 

thunderstorms, and low altitude wind shear, that may affect safety of 

flight on each route to be flown and at each airport to be used.



[Doc. No. 6258, 29 FR 19194, Dec. 31, 1964, as amended by Amdt. 121-27, 

36 FR 13911, July 28, 1971; Amdt. 121-134, 42 FR 27573, May 31, 1977; 

Amdt. 121-253, 61 FR 2610, Jan. 26, 1996]