Which Ops Spec addresses Alternate Airport IFR Weather Minimums?

• A. Ops Spec C055
• B. Ops Spec C051
• C. Ops Spec C073
• D. Ops Spec C052

Answer: (A)

Alternate IFR planning hinges on having an Ops Spec that authorizes using an alternate airport with its specific weather minimums. This spec sets the rules for designating an alternate in an IFR flight plan and defines the weather conditions that must be met at that alternate for it to be a valid destination if the primary is not viable. It ensures you can legally file and use an alternate based on defined ceiling/visibility minima, so you’re prepared to divert to a designated airport when forecast or actual conditions at the destination don’t meet the required standard. Other Ops Specs cover different topics and do not address the authorization and minimums for Alternate Airports, so the one focused on Alternate Airport IFR Weather Minimums is the correct reference.