Joe hires outsider Duane Hicks to help Buffalo navigate the future and coach Mikey. Gord and Sean's DC-3 delivery mission to the High Arctic goes awry when blizzard conditions and a broken oil cooler force an emergency landing.
Buffalo gets into the stunt flying business when veteran pilot Arnie flies the DC-4 for the reenactment scene of a famous WWII bombing raid. A routine C-46 flight becomes dangerous when a hole in the plane's aging exhaust system sets off the fire alarm, and Devan has to decide whether or not to shut down an engine mid-flight.
Frustrated with the constant drama at Buffalo, Chuck quits. Joe clashes with the maintenance department when a series of delays puts the important sale of a Canso aircraft in jeopardy. Mikey goes on an ATV hunting trip.
Frustrated with her lack of flying, Audrey decides her time at Buffalo is over. Normally calm under pressure, Devan is put to the test by a scary series of midair C-46 hydraulic problems.
A gasoline shortage prompts Duane to beg Chuck to return and prepare the Electra for a fuel haul. Cory goes on a rescue mission to nurse an abandoned C-46 back to life and Mikey goes on a birthday joyride in a fighter jet.
Duane lands a big Electra contract and puts Adam in charge for the first time. Kelly plans her wedding, but Jynelle's resignation leaves her in the lurch. A power outage sends Joe into crisis mode.
The Electra flies to the northernmost outpost on Earth, where Adam and new manager Duane are forced to work things out. Rampie Tyler is put on the co-pilot fast track, but first must prove to Justin that he can handle the DC-4.
Duane clashes with Joe and the pilots as he pushes to get two ambitious contracts done on time. Rookie DC-3 co-pilot Tyler discovers that landing the big plane takes practice.
Mechanic Jimmy is sent to a northern mining camp to create an ice landing strip on a remote lake. New co-pilot Tyler faces the ultimate test - flying the sked with Joe.
Engine troubles on the C-46 during the valley run force Devan to shut down an engine. Scott trains on a CL-215 waterbomber then joins the waterbombing crews when Buffalo is called in to fight a massive fire in Alberta.
