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Augmented Crews: Table C, Rest Classes and Why It Stops at 3 Segments

Add a third or fourth pilot and your day gets longer — but the size of the bonus depends entirely on what you can sleep in.

Table C — FDP by rest facility and crew size

Report (acclimated)	Cl 1 · 3p	Cl 1 · 4p	Cl 2 · 3p	Cl 2 · 4p	Cl 3 · 3p	Cl 3 · 4p
0000-0559	15	17	14	15.5	13	13.5
0600-0659	16	18.5	15	16.5	14	14.5
0700-1259	17	19	16.5	18	15	15.5
1300-1659	16	18.5	15	16.5	14	14.5
1700-2359	15	17	14	15.5	13	13.5

The rest facility classes (§117.3): Class 1 is a flat bunk separate from flight deck and passengers; Class 2 is a cabin seat reclining to flat or near-flat, curtained from passengers; Class 3 is a seat reclining at least 40° with leg and foot support. A fourth pilot buys you 1.5–2 hours; upgrading from Class 3 to Class 1 buys you about 2 hours more.

Flight time: 13 or 17 hours

§117.11(a): 13 hours maximum flight time with a 3-pilot crew, 17 with 4 — regardless of report time (unaugmented crews use Table A instead: 8–9 h).

The strings attached

Three segments, maximum (§117.17(d)). A four-leg augmented day does not exist — plan the trip around it.
In-flight rest windows (§117.17(c)): the landing pilot needs 2 consecutive hours in the second half of the FDP; the monitoring pilot needs 90 consecutive minutes. If scheduling cannot guarantee those windows, the augmentation itself is not compliant.
Someone qualified at the controls at all times (§117.17(e)).
Not acclimated: same as unaugmented — minus 30 minutes, band from your last-acclimated theater.

A common pairing: 3 pilots + Class 2 + midday report = 16.5 h FDP but still only 3 segments and a 13-hour flight ceiling. If the legs are long, flight time binds before FDP does.

Compare augmented options side by side in the free Part 117 calculator.

Verified against eCFR 14 CFR 117.17, 117.11, Table C. Educational only.