AIM 5-1-4 Flight Plan – VFR Flights Except for operations in or penetrating an ADIZ, a flight plan is not required for VFR flight. It is strongly recommended that a flight plan (for a VFR flight) be filed with an FAA FSS. This will ensure that you receive VFR Search and Rescue Protection.
C0005 终端区仪表飞行程序 a. 批准合格证持有人使用本运行规范中批准的程序和最低标准实施终端区仪表运行，但必须满足下述任一条件： （4）在国外机场，所用终端区仪表飞行程序是由国际民航组织缔约国的政府制定或批准的。这些终端区仪表飞行程序的设计准则必须等同于国际民航组织8168号文件《空中航行程序服务－飞机运行（PANS-OPS）》第二卷、美国《终端区仪表飞行程序标准（TERPS）》或欧洲《EU-OPS》中的标准。
FAR 121.697 Disposition of load manifest, flight release, and flight plans: Supplemental operations. (c) Except as provided in paragraph (d) of this section, if a flight originates at a place other than the certificate holder’s principal base of operations, the pilot in command (or another person not aboard the airplane who is authorized by the certificate holder) shall, before or immediately after departure of the flight, mail signed copies of the documents listed in paragraph (a) of this section, to the principal base of operations.
For Part 121 Operations, a Certificate Holder May Use a Regular, Refueling, or Provisional Airport. For part 121 operations, a certificate holder may use any regular, refueling,or provisional airport as an alternate airport, provided the airport is authorized for the type of aircraft being used. There is no need to dually（双重） designate an airport as an alternate for a particular aircraft type, if that airport is already authorized as a regular, provisional, or refueling airport for that aircraft type.
§125.1 Applicability. (a) ….this part prescribes rules governing the operations of U.S.-registered civil airplanes which have a seating configuration of 20 or more passengers or a maximum payload capacity of 6,000 pounds or more when common carriage is not involved.
然后对于“common carriage is not involved ”的解释是§110.2
§110.2 Definitions When common carriage is not involved or operations not involving common carriage means any of the following: (1) Noncommon carriage. (2) Operations in which persons or cargo are transported without compensation or hire. (3) Operations not involving the transportation of persons or cargo. (4) Private carriage.
最早的AC25-7的TAKEOFF AND TAKEOFF SPEEDS章节用来解释25.107的这一条当中，说明：
(7) section 25.107(f) – Liftoff Speed – The liftoff speed (VLoF) is defined as the calibrated airspee at which the airplane first becomes airborne, i.e., no contact with the runway. This allows comparison of liftoff speed with tire limit speed.
The maximum ground speed at liftoff, considering the entire takeoff operating envelope and taking into account 50 percent of the headwind and 150 percent of the tailwind, in accordance with § 25.105(d)(1), must not exceed the tire speed rating established under § 25.733(a) or (c).