EGPWS Terrain Database Update Calendar

Stay current with Enhanced Ground Proximity Warning System (EGPWS) terrain database release cycles. Ensure your aircraft maintain the latest terrain and obstacle data for safe flight operations worldwide.


About EGPWS Database Cycles

EGPWS terrain databases are updated on a 28-day cycle, synchronized with the Aeronautical Information Regulation and Control (AIRAC) cycle. Each update includes new terrain data, obstacle information, and airport changes. The current active cycle is highlighted in green, with future releases shown in grey.

Current Date: 02/Mar/2026

Database Release Schedule

The table below shows all published EGPWS terrain database versions. Airlines and maintenance organizations should plan updates according to their approved maintenance program and regulatory requirements (EASA AMC 20-28, FAA AC 120-76).

TDB Version Release DateStatus
65011/Feb/2026Current Active (19 days ago)
65108/Apr/2026Next Release (in 37 days)
652 (Server)03/Jun/2026Upcoming (in 93 days)
65329/Jul/2026Upcoming (in 149 days)
65423/Sep/2026Upcoming (in 205 days)
655 (Server)18/Nov/2026Upcoming (in 261 days)

Why EGPWS Updates Matter

The Enhanced Ground Proximity Warning System (EGPWS) uses a worldwide terrain database to provide flight crews with advanced warning of potential controlled flight into terrain (CFIT) situations. Regular database updates are critical because:

  • New Obstacles: Wind farms, towers, and buildings are constantly being constructed
  • Terrain Changes: Mining operations, landslides, and construction alter terrain profiles
  • Airport Updates: New runways, taxiways, and approach procedures require current data
  • Regulatory Compliance: Most authorities require databases to be current within specific timeframes

Update Planning Guidelines

Operation Type Recommended Action
Commercial Air Transport Update within 28 days of release (AIRAC cycle)
Business Aviation Update within 56 days or per operations manual
Maintenance Planning Schedule during routine checks (A-check or equivalent)

Tip: Coordinate EGPWS updates with navigation database (FMS) updates to minimize aircraft downtime. Always verify compatibility between EGPWS software version and terrain database version.