[Code of Federal Regulations]
[Title 14, Volume 2]
[Revised as of January 1, 2007]
From the U.S. Government Printing Office via GPO Access
[CITE: 14CFR91.865]

[Page 576]
 
                     TITLE 14--AERONAUTICS AND SPACE
 
CHAPTER I--FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION 
                               (CONTINUED)
 
PART 91_GENERAL OPERATING AND FLIGHT RULES--Table of Contents
 
                    Subpart I_Operating Noise Limits
 
Sec.  91.865  Phased compliance for operators with base level.

    Except as provided in paragraph (a) of this section, each operator 
that operates an airplane under part 91, 121, 125, 129, or 135 of this 
chapter, regardless of the national registry of the airplane, shall 
comply with paragraph (b) or (d) of this section at each interim 
compliance date with regard to its subsonic airplane fleet covered by 
Sec.  91.801(c) of this subpart.
    (a) This section does not apply to new entrants covered by Sec.  
91.867 or to foreign operators not engaged in foreign air commerce.
    (b) Each operator that chooses to comply with this paragraph 
pursuant to any interim compliance requirement shall reduce the number 
of Stage 2 airplanes it operates that are eligible for operation in the 
contiguous United States to a maximum of:
    (1) After December 31, 1994, 75 percent of the base level held by 
the operator;
    (2) After December 31, 1996, 50 percent of the base level held by 
the operator;
    (3) After December 31, 1998, 25 percent of the base level held by 
the operator.
    (c) Except as provided under Sec.  91.871, the number of Stage 2 
airplanes that must be reduced at each compliance date contained in 
paragraph (b) of this section shall be determined by reference to the 
amount of base level held by the operator on that compliance date, as 
calculated under Sec.  91.861.
    (d) Each operator that chooses to comply with this paragraph 
pursuant to any interim compliance requirement shall operate a fleet 
that consists of:
    (1) After December 31, 1994, not less than 55 percent Stage 3 
airplanes;
    (2) After December 31, 1996, not less than 65 percent Stage 3 
airplanes;
    (3) After December 31, 1998, not less than 75 percent Stage 3 
airplanes.
    (e) Calculations resulting in fractions may be rounded to permit the 
continued operation of the next whole number of Stage 2 airplanes.

[Doc. No. 26433, 56 FR 48659, Sept. 25, 1991]