Source: http://www.careerpilotnetwork.com/faa-regulations/far-117-main/far-117-regulations/
Timestamp: 2019-04-26 14:43:41+00:00

Document:
Here are the actual regulations for FAR 117. We provide these here for your reference and convenience. The actual FARs can always be accessed here.
117.3 Definitions – New definitions for FAR 117. You can find another good source for FAR definitions here.
117.13 Flight duty period: Unaugmented operations – Flight duty period limitations for unaugmented operations, which is most scheduled service. These limits are laid out in Table B.
117.15 Flight duty period: Split duty – The flight duty period limitations for split duty periods (also called “high-speeds” or “Stand-ups/standups” depending on your airline.) These are common schedules at regional airlines with a long break in between an arriving and departing flight but not long enough to make up a rest period.
117.19 Flight duty period extensions – Rules governing the extensions of flight duty periods. Many of these requirements are for the carrier but pilots should be aware of the basics.
117.21 Reserve status – This is a new concept for FAR 117. There are now separate rules just for reserve. Pilots should note that the airlines/contractual definition of reserve pilot may not be the same as how the FAA defines it. Therefore, you may see some differences from what you might expect.
117.23 Cumulative limitations – This outlines the cumulative limits for flight duty periods and for flight time cumulative limits.
117.25 Rest period – Rest period requirements.
§117.27 Consecutive nighttime operations – These are the rules governing consecutive operations into the WOCL (Window of Circadian Low), basically limiting consecutive night time operations.
§117.29 Emergency and government sponsored operations – Exceptions from the rules for governmental operations.
In addition to the definitions in §§1.1 and 110.2 of this chapter, the following definitions apply to this part. In the event there is a conflict in definitions, the definitions in this part control for purposes of the flight and duty limitations and rest requirements of this part.
Calendar day means a 24-hour period from 0000 through 2359 using Coordinated Universal Time or local time.
Fatigue means a physiological state of reduced mental or physical performance capability resulting from lack of sleep or increased physical activity that can reduce a flightcrew member’s alertness and ability to safely operate an aircraft or perform safety-related duties.
Long-call reserve means that, prior to beginning the rest period required by §117.25, the flightcrew member is notified by the certificate holder to report for a flight duty period following the completion of the rest period.
Physiological night’s rest means 10 hours of rest that encompasses the hours of 0100 and 0700 at the flightcrew member’s home base, unless the individual has acclimated to a different theater. If the flightcrew member has acclimated to a different theater, the rest must encompass the hours of 0100 and 0700 at the acclimated location.
Theater means a geographical area in which the distance between the flightcrew member’s flight duty period departure point and arrival point differs by no more than 60 degrees longitude.
(b) If unforeseen operational circumstances arise after takeoff that are beyond the certificate holder’s control, a flightcrew member may exceed the maximum flight time specified in paragraph (a) of this section and the cumulative flight time limits in 117.23(b) to the extent necessary to safely land the aircraft at the next destination airport or alternate, as appropriate.
(c) Each certificate holder must report to the Administrator within 10 days any flight time that exceeded the maximum flight time limits permitted by this section or §117.23(b). The report must contain a description of the extended flight time limitation and the circumstances surrounding the need for the extension.
(a) Except as provided for in §117.15, no certificate holder may assign and no flightcrew member may accept an assignment for an unaugmented flight operation if the scheduled flight duty period will exceed the limits in Table B of this part.
(e) At all times during flight, at least one flightcrew member qualified in accordance with §121.543(b)(3)(i) of this chapter must be at the flight controls.
(1) The pilot in command and the certificate holder may extend the maximum flight duty period permitted in Tables B or C of this part up to 2 hours. The pilot in command and the certificate holder may also extend the maximum combined flight duty period and reserve availability period limits specified in §117.21(c)(3) and (4) of this part up to 2 hours.
(2) An extension in the flight duty period under paragraph (a)(1) of this section of more than 30 minutes may occur only once prior to receiving a rest period described in §117.25(b).
(2) An extension of the flight duty period under paragraph (b)(1) of this section of more than 30 minutes may occur only once prior to receiving a rest period described in §117.25(b).
(4) Each certificate holder must report to the Administrator within 10 days any flight duty period that either exceeded the cumulative flight duty periods specified in §117.23(c), or exceeded the maximum flight duty period limits permitted by Tables B or C of this part by more than 30 minutes. The report must contain a description of the circumstances surrounding the affected flight duty period.
(2) For a flightcrew member who has completed a reserve availability period, no certificate holder may schedule and no flightcrew member may accept an assignment of a reserve availability period unless the flightcrew member receives the required rest in §117.25(e).
(e) A certificate holder may shift a reserve flightcrew member’s reserve status from long-call to short-call only if the flightcrew member receives a rest period as provided in §117.25(e).
(d) A flightcrew member must be given a minimum of 56 consecutive hours rest upon return to home base if the flightcrew member: (1) Travels more than 60° longitude during a flight duty period or a series of flight duty period, and (2) is away from home base for more than 168 consecutive hours during this travel. The 56 hours of rest specified in this section must encompass three physiological nights’ rest based on local time.
A certificate holder may schedule and a flightcrew member may accept up to five consecutive flight duty periods that infringe on the window of circadian low if the certificate holder provides the flightcrew member with an opportunity to rest in a suitable accommodation during each of the consecutive nighttime flight duty periods. The rest opportunity must be at least 2 hours, measured from the time that the flightcrew member reaches the suitable accommodation, and must comply with the conditions specified in §117.15(a), (c), (d), and (e). Otherwise, no certificate holder may schedule and no flightcrew member may accept more than three consecutive flight duty periods that infringe on the window of circadian low. For purposes of this section, any split duty rest that is provided in accordance with §117.15 counts as part of a flight duty period.
(a) This section applies to operations conducted pursuant to contracts with the U.S. Government and operations conducted pursuant to a deviation under §119.57 of this chapter that cannot otherwise be conducted under this part because of circumstances that could prevent flightcrew members from being relieved by another crew or safely provided with the rest required under §117.25 at the end of the applicable flight duty period.
(b) The pilot-in-command may determine that the maximum applicable flight duty period, flight time, and/or combined flight duty period and reserve availability period limits must be exceeded to the extent necessary to allow the flightcrew to fly to the closest destination where they can safely be relieved from duty by another flightcrew or can receive the requisite amount of rest prior to commencing their next flight duty period.
(c) A flight duty period may not be extended for an operation conducted pursuant to a contract with the U.S. Government if it causes a flightcrew member to exceed the cumulative flight time limits in §117.23(b) and the cumulative flight duty period limits in §117.23(c).
(3) Any flight duty period or flight time that exceeded the cumulative limits specified in §117.23.
(2) If the circumstances giving rise to the extension(s) were within the certificate holder’s control, the corrective action(s) that the certificate holder intends to take to minimize the need for future extensions.

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