Which document defines radio communication failure procedures?

Which document defines radio communication failure procedures?

• A. ENR 1.6
• B. ENR 2.3
• C. AIP En Route
• D. ICAO Doc 4444

Answer: (A)

When two-way radio contact is lost, the procedures that must be followed are specified in the national aeronautical information publication, within the en route section. This part provides the exact actions for both pilots and air traffic services in Indian airspace, outlining the sequence to follow after losing communications—typically continuing on the last assigned route and altitude and proceeding according to the expected clearance until contact is re-established or an alternate clearance is obtained. The national ENR 1.6 section translates the international framework into the specific steps and wording used in India, making it the authoritative reference for radio failure procedures here. While ICAO Doc 4444 offers the global guidance for ATC operations and the AIP En Route document contains the full en-route procedures, the precise and official definition of radio communication failure procedures in India resides in ENR 1.6.

When two-way radio contact is lost, the procedures that must be followed are specified in the national aeronautical information publication, within the en route section. This part provides the exact actions for both pilots and air traffic services in Indian airspace, outlining the sequence to follow after losing communications—typically continuing on the last assigned route and altitude and proceeding according to the expected clearance until contact is re-established or an alternate clearance is obtained. The national ENR 1.6 section translates the international framework into the specific steps and wording used in India, making it the authoritative reference for radio failure procedures here. While ICAO Doc 4444 offers the global guidance for ATC operations and the AIP En Route document contains the full en-route procedures, the precise and official definition of radio communication failure procedures in India resides in ENR 1.6.