T-45C TS INav-08
Fuel, Weather, and Alternate Airfield Planning
Next, study Situation 2, in which your destination forecast is above published minimums but below
NOTE: When planning for an alternate with more than one published approach to the probable duty
runway, use the lowest of the approach minimums for which you qualify.
Naturally, you will not want to select just any aerodrome as your alternate. Exercising foresight and
judgment, choose an alternate suitable for your aircraft and mission requirement. Do you have sufficient
fuel to fly to the alternate given some delays? Does your alternate have NAVAIDs that are operable and
are compatible with your equipment? Also, are radar facilities available should you experience NAVAID
equipment failure? Is your alternate far enough away from your destination to be unaffected by the same
weather systems? Get in the habit of raising and answering these kinds of questions as part of your flight
planning for an alternate airfield.
After choosing an alternate, you must determine the most suitable approach to your alternate considering
crosswinds and T-45C requirements. Remember that although the maximum crosswind for the aircraft is
20 kts (15 kts on a wet runway), your maximum crosswind as a student pilot is 10 kts. This may require
that you utilize a circling approach with higher minimums.
Next, calculate that you have an adequate fuel supply to your alternate plus your required reserve of
Finally, it is critical that you check NOTAMs to make sure that your alternate is available during the time
that you may need it. Your best alternate is best only if it is open, and runways may be closed for a
variety of reasons.