No sneak peaks. ForeFlight Mobile features a variety of hazard avoidance technologies that use Jeppesen’s global high-resolution terrain and obstacle data to provide pilots with better situational awareness and safety, anywhere they fly.

Get Hazard Features

Hazard Advisor

Hazard Advisor highlights hazardous terrain and obstacles within 1,000′ of your aircraft’s GPS altitude. Terrain and obstacles (“hazards”) within 100′ are colored red, and hazards within 1,000′ of your aircraft’s altitude are colored yellow. Obstacles are dynamically added to the screen as they become threats.

Profile View

Profile View takes our Hazard Advisor feature into vertical mode and gives you a side view of terrain and obstacles.

On the Ground

Use Profile view to easily determine the highest point along your route, how much clearance you have over that highest point, and if your planned altitude intersects with any terrain or obstacles.

In the Air

Profile view scrolls along as you fly and continuously updates your height AGL.

Global Synthetic Vision

Fly with more confidence in all conditions and terrain with this visually stunning and high-performance hazard awareness capability for iPad. ForeFlight’s Synthetic Vision uses Jeppesen’s terrain data sets, designed for use in certified panel-mounted avionics.


Turning on the obstacles layer on the map view allows you to tap on any obstacle on a chart to get detailed information on lighting, type, and MSL and AGL height.

A High Quality, Void-Filled Terrain Database

Terrain databases are not made equal. The source of the terrain data is a very important consideration. Free data sets used by some applications have holes – or “voids” – that miss important features like mountain peaks. These holes exist for a variety of technical reasons, but need correcting.

ForeFlight’s terrain database, however, is “void filled”. If the terrain database you fly with is not void filled, you are not getting the whole picture.

Plan & Fly with More Confidence

Flying with ForeFlight’s advanced features like Hazard Advisor, Terrain Profile View, and 3D Synthetic Vision gives you a clear picture of terrain and obstacle hazards anywhere in the world. These features and more are included in the Pro Plus and Performance Plus plans.

Get Hazard Features