High-altitude propellers are optimized for the thin air of high altitudes (1500 to 5000 m). They come in pairs and are mounted as replacements to normal propellers, using the same washers and nuts. For flights above 1500 m (4900 ft) AMSL, the use of high-altitude propellers is recommended. With the normal propellers, you can take off up to 2500 m (8200 ft) AMSL. For flying higher, you need the high-altitude propellers, which allow taking off at altitudes up to 4800 m (15.700 ft) AMSL and flying at altitudes up to 5000 m (16400 ft) AMSL. For flights above 1500 m (4900 ft) AMSL, the use of high-altitude propellers is recommended. With the normal propellers, you can take off up to 2500 m (8200 ft) AMSL. For flying higher, you need the high-altitude propellers, which allow taking off at altitudes up to 4800 m (15.700 ft) AMSL and flying at altitudes up to 5000 m (16400 ft) AMSL.

• 2000 m AMSL --> 85% of the area covered at 500 m or 40 minutes of flight time*
• 3000 m AMSL --> 75% of the area covered at 500 m or 33 minutes of flight time*
• 4000 m AMSL --> 60% of the area covered at 500 m or 25 minutes of flight time*
• 5000 m AMSL --> 40% of the area covered at 500 m or 15 minutes of flight time*