14 CFR § 117.13 - Flight duty period: Unaugmented operations.

---
identifier: "/us/cfr/t14/s117.13"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "14 CFR § 117.13 - Flight duty period: Unaugmented operations."
title_number: 14
title_name: "Aeronautics and Space"
section_number: "117.13"
section_name: "Flight duty period: Unaugmented operations."
chapter_name: "FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION"
subchapter_number: "G"
subchapter_name: "AIR CARRIERS AND OPERATORS FOR COMPENSATION OR HIRE: CERTIFICATION AND OPERATIONS"
part_number: "117"
part_name: "FLIGHT AND DUTY LIMITATIONS AND REST REQUIREMENTS: FLIGHTCREW MEMBERS"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "49 U.S.C. 106(g), 40113, 40119, 44101, 44701-44702, 44705, 44709-44711, 44713, 44716-44717, 44722, 46901, 44903-44904, 44912, 46105."
regulatory_source: "Docket FAA-2009-1093, 77 FR 398, Jan. 4, 2012, unless otherwise noted."
cfr_part: "117"
---


# 117.13 Flight duty period: Unaugmented operations.

(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.

(b) If the flightcrew member is not acclimated:

(1) The maximum flight duty period in Table B of this part is reduced by 30 minutes.

(2) The applicable flight duty period is based on the local time at the theater in which the flightcrew member was last acclimated.