What does Exemption 17347 permit?

• A. Permits dispatch if TEMPO & PROB in the TAF show weather could be below authorized mins at ETA at the destination or the first alternate
• B. Two alts
• C. Requires Cat II procedures
• D. Permits dispatch regardless of weather

Answer: (A)

Exemption 17347 handles dispatch when forecast uncertainty could push weather below your published minimums. It allows the flight to depart even if the weather at the estimated time of arrival (ETA) at the destination or the first alternate could be below minimums, as long as the TAF shows TEMPO or PROB indicating that possibility. TEMPO reflects temporary reductions in weather conditions, and PROB expresses a probability that those conditions will occur. So dispatch is permitted under this conditional forecast, not guaranteed regardless of weather, and not tied to having two alternates or Cat II procedures.