[Code of Federal Regulations]
[Title 14, Volume 1]
[Revised as of January 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 14CFR29.87]

[Page 624]
 
                     TITLE 14--AERONAUTICS AND SPACE
 
CHAPTER I--FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION
 
PART 29--AIRWORTHINESS STANDARDS: TRANSPORT CATEGORY ROTORCRAFT--Table of Contents
 
                            Subpart B--Flight
 
Sec. 29.87  Height-velocity envelope.

    (a) If there is any combination of height and forward velocity 
(including hover) under which a safe landing cannot be made after 
failure of the critical engine and with the remaining engines (where 
applicable) operating within approved limits, a height-velocity envelope 
must be established for--
    (1) All combinations of pressure altitude and ambient temperature 
for which takeoff and landing are approved; and
    (2) Weight from the maximum weight (at sea level) to the highest 
weight approved for takeoff and landing at each altitude. For 
helicopters, this weight need not exceed the highest weight allowing 
hovering out-of-ground effect at each altitude.
    (b) For single-engine or multiengine rotorcraft that do not meet the 
Category A engine isolation requirements, the height-velocity envelope 
for complete power failure must be established.

[Doc. No. 24802, 61 FR 21901, May 10, 1996; 61 FR 33963, July 1, 1996]

                         Flight Characteristics