AIM ¶ 5-6-7 — Civil Aircraft Transit Rules
AIM 5-6-7 explains rules for civil aircraft transiting U.S. territorial airspace: flight plans, transponder, ADS-B, radio, TSA, and ADIZ requirements.
In Plain English
AIM 5-6-7 lays out the conditions under which civil aircraft may transit U.S. territorial airspace. The general rule (subparagraph a) requires aircraft to:
- File and operate on an active flight plan (IFR, VFR, or DVFR)
- Have an operational transponder with altitude reporting, continuously squawking an ATC-assigned code
- Be equipped with ADS-B Out where required by 14 CFR 91.225
- Maintain two-way radio communications with ATC
- Comply with ADIZ and national security requirements (AIM 5-6-4 and 5-6-2)
- Operate under an approved TSA aviation security program or FAA/TSA airspace waiver if foreign-registered or if U.S.-registered above 100,309 lbs (45,500 kg)
- Hold an FAA routing authorization if registered in or operating under the ICAO 3LD of a U.S. State Department special interest country (VFR/DVFR prohibited in this case)
Special provisions exist for Canadian and Mexican aircraft flying air ambulance, firefighting, law enforcement, SAR, or emergency evacuation within 50 NM of the border; for smaller aircraft from Canada, Mexico, Bahamas, Bermuda, Cayman Islands, or BVI entering directly; and for transponder/radio-less light aircraft transiting Alaska north of the 54th parallel. This matters because failure to comply can trigger national security intercepts.
AIM Source Text
FAA AIM ¶ 5-6-75-6-7. 5-6-7. Civil Aircraft Operations Transiting U.S. Territorial Airspace
Civil aircraft (except those operating in accordance with subparagraphs 5-6-7 b , 5-6-7 c , 5-6-7 d , and 5-6-7 e ) are authorized to transit U.S. territorial airspace if in compliance with all of the following conditions: File and are on an active flight plan (IFR, VFR, or DVFR); Equipped with an operational transponder with altitude reporting capability and continuously squawk an ATC assigned transponder code; Equipped with an operational ADS-B Out when operating in airspace specified in 14 CFR 91.225; Maintain two-way radio communications with ATC; Comply with all other applicable ADIZ requirements described in paragraph 5-6-4 and any other national security requirements in paragraph 5-6-2 ; Are operating under an approved TSA aviation security program (see paragraph 5-6-10 for TSA aviation security program information) or are operating with and in accordance with an FAA/TSA airspace waiver (see paragraph 5-6-9 for FAA/TSA airspace waiver information), if: The aircraft is not registered in the U.S.; or The aircraft is registered in the U.S. and its maximum takeoff gross weight is greater than 100,309 pounds (45,500 kgs); Are in receipt of, and are operating in accordance with, an FAA routing authorization if the aircraft is registered in a U.S. State Department-designated special interest country or is operating with the ICAO 3LD of a company in a country listed as a U.S. State Department-designated special interest country, unless the operator holds valid FAA part 129 operations specifications. VFR and DVFR flight operations are prohibited for any aircraft requiring an FAA routing authorization. (See paragraph 5-6-11 for FAA routing authorization information.) Civil aircraft registered in Canada or Mexico, and engaged in operations for the purposes of air ambulance, firefighting, law enforcement, search and rescue, or emergency evacuation are authorized to transit U.S. territorial airspace within 50 NM of their respective borders with the U.S., with or without an active flight plan, provided they have received and continuously transmit an ATC-assigned transponder code. Civil aircraft registered in Canada, Mexico, Bahamas, Bermuda, Cayman Islands, or the British Virgin Islands with a maximum certificated takeoff gross weight of 100,309 pounds (45,500 kgs) or less are authorized to transit U.S. territorial airspace if in compliance with all of the following conditions: File and are on an active flight plan (IFR, VFR, or DVFR) that enters U.S. territorial airspace directly from any of the countries listed in this subparagraph 5-6-7 c . Flights that include a stop in a non-listed country prior to entering U.S. territorial airspace must comply with the requirements prescribed by subparagraph 5-6-7 a above, including operating under an approved TSA aviation security program (see paragraph 5-6-10 for TSA aviation program information) or operating with, and in accordance with, an FAA/TSA airspace waiver (see paragraph 5-6-9 for FAA/TSA airspace waiver information). Equipped with an operational transponder with altitude reporting capability and continuously squawk an ATC assigned transponder code; Equipped with an operational ADS-B Out when operating in airspace specified in 14 CFR 91.225; Maintain two-way radio communications with ATC; and Comply with all other applicable ADIZ requirements described in paragraph 5-6-4 and any other national security requirements in paragraph 5-6-2 . Civil aircraft registered in Canada, Mexico, Bahamas, Bermuda, Cayman Islands, or the British Virgin Islands with a maximum certificated takeoff gross weight greater than 100,309 pounds (45,500 kgs) must comply with the requirements subparagraph 5-6-7a, including operating under an approved TSA aviation security program (see paragraph 5-6-10 for TSA aviation program information) or operating with, and in accordance with, an FAA/TSA airspace waiver (see paragraph 5-6-9 for FAA/TSA airspace waiver information). Civil aircraft registered in the U.S., Canada, or Mexico with a maximum certificated takeoff gross weight of 100,309 pounds (45,500 kgs) or less that are operating without an operational transponder and/or the ability to maintain two-way radio communications with ATC, are authorized to transit U.S. territorial airspace over Alaska if in compliance with all of the following conditions: Enter and exit U.S. territorial airspace over Alaska north of the fifty-fourth parallel; File and are on an active flight plan; Squawk 1200 if VFR and equipped with a transponder. Comply with all other applicable ADIZ requirements described in paragraph 5-6-4 and any other national security requirements in paragraph 5-6-2 .
Oral Exam Questions a DPE Might Ask
Q1What are the basic equipment and communication requirements for a civil aircraft transiting U.S. territorial airspace?
Per AIM 5-6-7, the aircraft must be on an active IFR, VFR, or DVFR flight plan; equipped with an operational transponder with altitude reporting squawking an ATC-assigned code; equipped with operational ADS-B Out where required by 14 CFR 91.225; maintain two-way radio communications with ATC; and comply with ADIZ and other national security requirements.
Q2Under what conditions may a Canadian or Mexican-registered aircraft transit U.S. airspace without an active flight plan?
Per AIM 5-6-7, civil aircraft registered in Canada or Mexico engaged in air ambulance, firefighting, law enforcement, search and rescue, or emergency evacuation operations may transit U.S. territorial airspace within 50 NM of the U.S. border, with or without an active flight plan, provided they receive and continuously transmit an ATC-assigned transponder code.
Q3What special provision allows aircraft without a transponder or two-way radio to transit U.S. airspace over Alaska?
Per AIM 5-6-7, U.S.-, Canadian-, or Mexican-registered civil aircraft with a max certificated takeoff weight of 100,309 lbs or less may transit U.S. territorial airspace over Alaska without an operational transponder and/or two-way radio if they enter and exit north of the 54th parallel, are on an active flight plan, squawk 1200 if VFR with a transponder, and comply with ADIZ and national security requirements.
Related Paragraphs in AIM Chapter 5