Skip to content
Define AviationCFI lesson plans to teach aviation lessons

NAVIGATION SPECIFICATION [ICAO]

Airspace

All definitions
« Back to Glossary Index

A set of aircraft and flight crew requirements needed to support performance-based navigation operations within a defined airspace. There are two kinds:

  1. RNP specification – based on area navigation that includes the requirement for performance monitoring and alerting, designated by the prefix RNP; e.g., RNP 4, RNP APCH.
  2. RNAV specification – based on area navigation that does not include the requirement for performance monitoring and alerting, designated by the prefix RNAV; e.g., RNAV 5, RNAV 1.

Source FAA Pilot/Controller Glossary · checked 2026-08-25

« Back to Glossary Index

More in Airspace

Enjoying Define Aviation ad-free?

Chip in and ads disappear right away in this browser — cancel anytime, no account needed.

Secure checkout via Stripe — Apple Pay, Google Pay, and cards.