AIM Text
- Calls to air traffic control (ATC) facilities (ARTCCs, Towers, FSSs, Central Flow, and Operations Centers) over radio and ATC operational telephone lines (lines used for operational purposes such as controller instructions, briefings, opening and closing flight plans, issuance of IFR clearances and amendments, counter hijacking activities, etc.) may be monitored and recorded for operational uses such as accident investigations, accident prevention, search and rescue purposes, specialist training and evaluation, and technical evaluation and repair of control and communications systems.
- Where the public access telephone is recorded, a beeper tone is not required. In place of the “beep” tone the FCC has substituted a mandatory requirement that persons to be recorded be given notice they are to be recorded and give consent. Notice is given by this entry, consent to record is assumed by the individual placing a call to the operational facility.
Source: FAA Aeronautical Information Manual · current edition · paragraph 4-1-4.
Research Notes
AIM 4-1-4 covers recording and monitoring of ATC communications — the policy that ATC frequency transmissions are recorded for safety, training, and incident-investigation purposes.
Recording scope: All ATC voice communications on assigned frequencies are recorded. The recordings are retained for a defined retention period (per FAA Order 7210.3 — typically 45 days, sometimes longer if associated with an incident).
Why this matters for pilots: Everything you say to ATC is on the record. The recordings become primary evidence in: certificate action proceedings, NTSB accident investigations, ASRS reports (cross-referenced), and post-incident analysis. Treat every transmission as if a lawyer will be reading the transcript later — because if there's an incident, one will.
FOIA access: Recordings of ATC transmissions are subject to FOIA. Pilots involved in an incident, NTSB investigators, attorneys (with proper standing), and journalists can request the audio. The website LiveATC.net archives many U.S. ATC streams as well — that's a community archive, separate from official FAA recordings, but operationally useful.
What gets recorded: Transmissions on the working frequency. Side conversations between controllers in the cab, phone-line coordination, and intercom traffic between sectors are NOT recorded in the same way (separate operational logs may exist).
Reference: FAA Order 7210.3 on facility operation/recording; AIM 4-1-4 for pilot-facing summary.