[Code of Federal Regulations]

[Title 14, Volume 4]

[Revised as of January 1, 2006]

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

[CITE: 14CFR234.8]



[Page 99-100]

 

                     TITLE 14--AERONAUTICS AND SPACE

 

   CHAPTER II--OFFICE OF THE SECRETARY, DEPARTMENT OF TRANSPORTATION 

                         (AVIATION PROCEEDINGS)

 

PART 234_AIRLINE SERVICE QUALITY PERFORMANCE REPORTS--Table of Contents

 

Sec. 234.8  Calculation of on-time performance codes.



    (a) Each reporting carrier shall calculate an on-time performance 

code in accordance with this section and as provided in more detail in 

accounting and reporting directives issued by the Director, Office of 

Airline Information. The calculations shall be performed for each 

reportable flight, except those scheduled to operate three times or less 

during a month. In addition, each reporting carrier shall assign an on-

time performance code to each of its single plane one-stop or multi-stop 

flights, or portion thereof, that the carrier holds out to the public 

through a CRS, the last segment of which is a reportable flight.

    (b) The on-time performance code shall be calculated as follows:

    (1) Based on reportable flight data provided to the Department, 

calculate the percentage of on-time arrivals of each nonstop flight. 

Calculations shall not include discontinued or extra-section flights for 

which data are not reported to the Department.

    (2) Based upon the on-time performance percentage calculated in 

paragraph (b)(1) of this section, assign a single digit code to each 

flight that reflects the percentile of on-time performance achieved by 

the flight, as set forth in the following table:



                           On Time Performance

------------------------------------------------------------------------

                          Code:                             Percentage

------------------------------------------------------------------------

        9...............................................          90-100

        8...............................................         80-89.9

        7...............................................         70-79.9

        6...............................................         60-69.9

        5...............................................         50-59.9

        4...............................................         40-49.9

        3...............................................         30-39.9

        2...............................................         20-29.9

        1...............................................         10-19.9

        0...............................................           0-9.9

------------------------------------------------------------------------



    (3) For a one-stop or multi-stop flight, or portion thereof, listed 

in a CRS, the performance code for the nonstop flight segment arriving 

at the destination listed in the CRS shall be used.

    (4) In the case of a new flight, carriers shall assign a performance 

code consisting of the letter ``N.'' A flight that is not a new flight 

shall be assigned the performance code calculated for the flight that it 

replaces, even if the two flights do not have the same flight number. In 

the case of a flight scheduled to operate three times or less during a 

month, carriers shall assign a performance code consisting of the letter 

``U.''

    (c) Carriers shall calculate on-time performance percentages and 

assign on-time performance codes on a monthly basis. This process shall 

be completed no later than the 15th day of each month, when the reports 

required by this part are due to the Department,



[[Page 100]]



and the codes shall reflect the previous month's operations.



[Amdt. No. 234-1, 52 FR 34071, Sept. 9, 1987, as amended by Amdt. No. 

234-3, 52 FR 48397, Dec. 22, 1987; 53 FR 27677, July 22, 1988; Docket 

No. 48524, 59 FR 49798, Sept. 30, 1994; 60 FR 66722, Dec. 26, 1995]