The ERG Code column relates to the Emergency Response Drill Code defined in which ICAO document?

• A. ICAO Doc. 9605-AN/928
• B. ICAO Doc. 9471-AN/928
• C. ICAO Doc. 9300-AN/928
• D. ICAO Doc. 9481-AN/928

Answer: (D)

The important idea is knowing where the Emergency Response Drill Code is defined. ICAO standardizes how emergency drills are described across member states, and the specific codes used to classify these drills are published in ICAO Doc 9481 (AN/928). This document lays out the framework and the exact drill codes so the ERG Code column can be read and interpreted consistently by airlines, airports, and regulators. The other ICAO documents cover different topics and do not define the drill-code scheme used for emergency response documentation. So, the Emergency Response Drill Code is defined in ICAO Doc 9481-AN/928.