[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: 14CFR31.19]



[Page 761]

 

                     TITLE 14--AERONAUTICS AND SPACE

 

CHAPTER I--FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION

 

PART 31_AIRWORTHINESS STANDARDS: MANNED FREE BALLOONS--Table of Contents

 

                      Subpart B_Flight Requirements

 

Sec. 31.19  Performance: Uncontrolled descent.



    (a) The following must be determined for the most critical 

uncontrolled descent that can result from any single failure of the 

heater assembly, fuel cell system, gas value system, or maneuvering vent 

system, or from any single tear in the balloon envelope between tear 

stoppers:

    (1) The maximum vertical velocity attained.

    (2) The altitude loss from the point of failure to the point at 

which maximum vertical velocity is attained.

    (3) The altitude required to achieve level flight after corrective 

action is inititated, with the balloon descending at the maximum 

vertical velocity determined in paragraph (a)(1) of this section.

    (b) Procedures must be established for landing at the maximum 

vertical velocity determined in paragraph (a)(1) of this section and for 

arresting that descent rate in accordance with paragraph (a)(3) of this 

section.



[Amdt. 31-4, 45 FR 60179, Sept. 11, 1980]