A fun trip is to fly down to Panama City Tocumen Intl and then switch to the Cessna Caravan Amphibian to sail up the canal to Colon.
Be sure to set the Floatplane at no damage because traversing the canal locks is like going over rapids! Its fun but navigating the canal can be difficult, keep to the left at the fork!
Good suggestion. I can't find the canal. I have been to Panama, and if I rememeber correctly Tocumen is north of Panama City and the canal. Therefore I flew south and couldn't find it. Also I couldn't find old Howard Air Force base. Can you give us more information?