FAR 121 Subpart Q (Max Duty Time - Max Extension) - ((Max Flight Time - Flt buffer) + Brief + Debrief + (Segments - 1) * Turn) = Allowed Flight Duty Period delay Max Duty Time Based upon Flt Flight Duty Period Permitted Time in 24 Hrs Start Time Flight Time <9 >=9 0000-2359 8:00 16:00 15:00 Segments Permitted Pairing Growth < 9 hours Flight time in 24 1 2 3 4 5 6 7 Allowed FDP Delays 6:45 6:00 5:15 4:30 3:45 3:00 2:15 Segments Permitted Pairing Growth >= 9 hours Flight time in 24 1 2 3 4 5 6 7 Allowed FDP Delays 5:45 5:00 4:15 3:30 2:45 2:00 1:15 Will require flight time reductions to absorb delays Less than 2 hours and greater than or equal 2 hours growth Greater than or equal 2 hours growth Relative Efficiency of the FDP 100 * (Max Flight Time)/((max duty time debrief) + Permitted Pairing Growth) – Efficiency of FDP < 9 hr hours Flight Time in 24 hours 1 2 3 4 5 6 7 88.89 82.05 76.19 71.11 66.67 62.75 59.26 Efficiency of FDP >= 9 hr hours Flight Time in 24 hours 1 2 3 4 5 6 7 88.89 82.05 76.19 71.11 66.67 62.75 59.26 Less than FAR 117 efficiency in some cases Exceeds FAR 117 efficiency FAR 117 (Max Skd FDP + Max Extension) - ((Max Flight Time - FT Buffer) + Brief + (Segments - 1) * Turn) = Allowed Flight Duty Period delay Segments Flight Duty Period Permitted Start Time Flight Time 1 2 3 4 5 6 7 0000-0359 8:00 9:00 9:00 9:00 9:00 9:00 9:00 9:00
FAR 121 Subpart Q (Max Duty Time - Max Extension) - ((Max Flight Time - Flt buffer) + Brief + Debrief + (Segments - 1) * Turn) = Allowed Flight Duty Period delay Flight Duty Period Start Time Permitted Flight Time Max Duty Time Based upon Flt Time in 24 Hrs <9 >=9 0000-2359 8:00 16:00 15:00 Permitted Pairing Growth < 9 hours Flight time in 24 Segments 1 2 3 4 5 6 7 Allowed FDP Delays 6:45 6:00 5:15 4:30 3:45 3:00 2:15 Permitted Pairing Growth >= 9 hours Flight time in 24 Segments 1 2 3 4 5 6 7 Allowed FDP Delays 5:45 5:00 4:15 3:30 2:45 2:00 1:15 Will require flight time reductions to absorb delays Less than 2 hours and greater than or equal 2 hours growth Greater than or equal 2 hours growth Relative Efficiency of the FDP 100 * (Max Flight Time)/((max duty time – debrief) + Permitted Pairing Growth) Efficiency of FDP < 9 hr hours Flight Time in 24 hours 1 2 3 4 5 6 7 88.89 82.05 76.19 71.11 66.67 62.75 59.26 Efficiency of FDP >= 9 hr hours Flight Time in 24 hours 1 2 3 4 5 6 7 88.89 82.05 76.19 71.11 66.67 62.75 59.26 Less than FAR 117 efficiency in some cases Exceeds FAR 117 efficiency FAR 117 (Max Skd FDP + Max Extension) - ((Max Flight Time - FT Buffer) + Brief + (Segments - 1) * Turn) = Allowed Flight Duty Period delay Flight Duty Period Start Time Permitted Flight Time Segments 1 2 3 4 5 6 7 0000-0359 8:00 9:00 9:00 9:00 9:00 9:00 9:00 9:00
how-maximum-flight-duty-periods-and-maximum-flight-times-will-affect-airlines1.docx