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This glossary is written for virtual airline and flight simulation use within Virtual Air Canada Airline. It is not intended as a real-world aviation reference.
A Noise Abatement Departure Procedure is a standardized departure profile designed to minimize aircraft noise exposure over communities surrounding an airport. ICAO defines two primary profiles: NADP 1 (close-in noise abatement), which reduces thrust and retracts flaps sooner to limit noise near the airport boundary, and NADP 2 (distant noise abatement), which maintains climb thrust longer to gain altitude before power reduction, protecting communities further from the runway. Airports publish the applicable procedure in their charts and ATIS, and airlines include the required profile in their standard operating procedures. Crew coordination is essential during an NADP sequence. The Pilot Flying manages thrust and configuration changes at specific altitudes - typically between 800 ft and 3,000 ft AAL - while the Pilot Monitoring calls out targets and monitors engine limits. Any crew-initiated deviation from the published procedure requires ATC coordination, and safety always overrides noise considerations; if obstacle clearance or engine performance demands it, the NADP profile is abandoned.

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In Virtual Airline Operations

At Virtual Air Canada Airline, NADP profiles are reflected in the standard departure procedures loaded into your FMS. When flying out of noise-sensitive airports such as Vancouver (CYVR) or Toronto Pearson (CYYZ), following the published NADP demonstrates realistic crew discipline and matches the real-world performance expectations built into SimBrief-generated OFPs.
  • OFP - Operational Flight Plan
  • PF - Pilot Flying
  • PM - Pilot Monitoring