Garmin GI 275 Installation Manual page 492

E.4.2 Overspeeds Configuration Examples
Example 1
Section 2 (Limitations) of the Columbia 400 POH/AFM defines Vne at 12,000FT as 230 KIAS and at
FL250 as 174 KIAS. As such, the configuration should be entered as follows:
• 12,000FT at 230KT
• 25,000FT at 174KT
Example 2
Hypothetically, if the Vne was not defined at the operating ceiling, the configuration would then rely on the
POH/AFM Section 2 statement that Vne decreases by 4.4 KT per 1,000 feet of altitude above 12,000 feet.
Here the calculation for Vne at the aircraft operating ceiling would be:
Vne= 230 KT – [(25,000FT – 12,000FT) * 4.4 KT / 1,000 FT] = 172.8 KT
As such, the configuration entered would be:
• 12,000FT at 230KT
• 25,000FT at 172KT
190-02246-10
Rev. 11
GI 275 Part 23 AML STC Installation Manual
Page E-7