PROPELLER AIRCRAFT
Alternate not required- A+B+ 45 Minutes
Alternate Required- A+B+C+ 45 minutes
Alternate Not Available- A+B+ 45 Minutes + 15 % of Flight Fuel or 2 hours Which ever is less
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JET AIRCRAFT
Alternate not required- A+B+ 30 Minutes of holding at 1500 feet
Alternate Required- A+B+ Approach and Missed Approach Procedure + Climb, Proceed to C + 30 minutes of holding at 1500 feet
Alternate Not Available- A+B+ 2 hours of holding at Cruise Speed
Minimum IFR Requirements- A+B+C+ 45 minutes