135.269 Flight time limitations and rest requirements: Unscheduled
three- and four-pilot crews.
(a) No certificate holder may assign any flight crewmember, and no flight
crewmember may accept an assignment, for flight time as a member of a three-
or four-pilot crew if that crewmember's total flight time in all commercial
flying will exceed—
(1) 500 hours in any calendar quarter.
(2) 800 hours in any two consecutive calendar quarters.
(3) 1,400 hours in any calendar year.
(b) No certificate holder may assign any pilot to a crew of three or four
pilots, unless that assignment provides—
(1) At least 10 consecutive hours of rest immediately preceding the
(2) No more than 8 hours of flight deck duty in any 24 consecutive hours;
(3) No more than 18 duty hours for a three-pilot crew or 20 duty hours
for a four-pilot crew in any 24 consecutive hours;
(4) No more than 12 hours aloft for a three-pilot crew or 16 hours aloft
for a four-pilot crew during the maximum duty hours specified in paragraph
(b)(3) of this section;
(5) Adequate sleeping facilities on the aircraft for the relief pilot;
(6) Upon completion of the assignment, a rest period of at least 12
(7) For a three-pilot crew, a crew which consists of at least the
(i) A pilot in command (PIC) who meets the applicable flight crewmember
requirements of subpart E of part 135;
(ii) A PIC who meets the applicable flight crewmember requirements of
subpart E of part 135, except those prescribed in §§135.244 and 135.247; and
(iii) A second in command (SIC) who meets the SIC qualifications of
(8) For a four-pilot crew, at least three pilots who meet the conditions
of paragraph (b)(7) of this section, plus a fourth pilot who meets the SIC
qualifications of §135.245.
(c) When a flight crewmember has exceeded the daily flight deck duty
limitation in this section by more than 60 minutes, because of circumstances
beyond the control of the certificate holder or flight crewmember, that
flight crewmember must have a rest period before the next duty period of at
least 16 consecutive hours.
(d) A certificate holder must provide each flight crewmember at least 13
rest periods of at least 24 consecutive hours each in each calendar quarter.