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14 CFR § 91.103
Volume 2 · Title 14 of the Code of Federal Regulations, 2025 edition.
Preflight action
Sec. 91.103 Preflight action.
Each pilot in command shall, before beginning a flight, become
familiar with all available information concerning that flight. This
information must include--
(a) For a flight under IFR or a flight not in the vicinity of an
airport, weather reports and forecasts, fuel requirements, alternatives
available if the planned flight cannot be completed, and any known
traffic delays of which the pilot in command has been advised by ATC;
(b) For any flight, runway lengths at airports of intended use, and
the following takeoff and landing distance information:
(1) For civil aircraft for which an approved Airplane or Rotorcraft
Flight Manual containing takeoff and landing distance data is required,
the takeoff and landing distance data contained therein; and
(2) For civil aircraft other than those specified in paragraph
(b)(1) of this section, other reliable information appropriate to the
aircraft, relating to aircraft performance under expected values of
airport elevation and runway slope, aircraft gross weight, and wind and
temperature.U.S. Government work — public domain (17 U.S.C. §105). Reproduced from the checksummed 2025 annual edition of Title 14; always confirm against the current eCFR.