8/15/19 AIM  FIG 5 − 6 − 2 Helicopter Intercept Procedures d. Summary of Intercepted Aircraft Actions. An intercepted aircraft must, without delay: 1. Adhere to instructions relayed through the use of visual devices, visual signals, and radio communications from the intercepting aircraft. 2. Attempt to establish radio communications with the intercepting aircraft or with the appropriate air traffic control facility by making a general call on guard frequencies (121.5 or 243.0 MHz), giving the identity, position, and nature of the flight. 3. If transponder equipped, select Mode 3/A Code 7700 unless otherwise instructed by air traffic control. 4. The crew of the intercepted aircraft must continue to comply with interceptor aircraft signals and instructions until positively released. If instruction received from any agency conflicts with that given by the intercepting aircraft through visual or radio communications, the intercepted aircraft must seek immediate clarification. NOTE − 5 − 6 − 14. Law Enforcement Operations by Civil and Military Organizations a. Special law enforcement operations. 1. Special law enforcement operations include in-flight identification, surveillance, interdiction, and pursuit activities performed in accordance with official civil and/or military mission responsibilities. 2. To facilitate accomplishment of these special missions, exemptions from specified sections of the CFRs have been granted to designated departments and agencies. However, it is each organization’s responsibility to apprise ATC of their intent to operate under an authorized exemption before initiating actual operations. 3. Additionally, some departments and agencies that perform special missions have been assigned coded identifiers to permit them to apprise ATC of ongoing mission activities and solicit special air traffic assistance. National Security and Interception Procedures 5 − 6 − 10