The origin of how Jimbo came to be starts out at the Aircraft Factory, where the technicians use centimetres instead of inches, resulting in "half a Jumbo"!
One day whilst crossing the Atlantic, Jimbo sees a ship in distress and frantically does all he can to gather help to save it.
Jimbo is to take a class of children on their first ever flight. Despite the Chief's warnings to behave, Jimbo gives the kids a ride they'll never forget - much to their poor teacher's displeasure!
One stormy night, Jimbo claims to have seen a flying saucer hovering above London Airport. The Chief thinks he is playing another joke until he experiences a Close Encounter...
Today is the Chief's birthday which, ironically, is on April Fools Day. He has a bit of fun with Jimbo whilst testing out fire safety with Captain Squirt of the Fire Department, but Jimbo gets the last laugh.
One misty day, Jimbo comes across a Wellington bomber plane (the Old Timer) who has lost his way in the fog. Jimbo offers to guide him home but weather (rain, snow, fog) constantly causes the pair to be diverted to one airfield after another.
The Chief flies everyone in a blind panic when he hears word that royal visitors are due to arrive at the airfield. Unfortunately for him, the visitors (who turn out be 'DOGS!') aren't as royal as he was expecting...
Poor Jimbo suffers jet lag after an uncomfortable flight. The Flying Doctor has to get Jimbo to gain his confidence in order to fly again; but when all his methods fail, Tommy Towtruck suggests a bold solution...
Jimbo is low on fuel and wants to get home but finds himself in a "queue" with other planes waiting to land. With help from a large cloud, Jimbo pretends to be Concorde in order to slip in quietly, which causes great confusion at London Airport...
Fed up with the cold and wet in Britain, Jimbo flies to Hawaii for his holiday for some fun in the sun. All is well until a volcano really heats things up!
Jimbo is sent to take champion skiers to Switzerland for an important championship and even shows off a few of his own winter sports!
Jimbo, tired and weary after a long flight, accidentally lands in the middle of the Australian outback. However, he is rescued by a fellow Australian and a herd of kangaroos.
Flying a little too high, Jimbo finds himself out in far space where he helps a stranded astronaut back to Earth.
The African airfields begin using computer technology to keep their airport running. Jimbo realises how useful computers and elephants are when he helps to put out a forest fire.
Jimbo's engines are acting up as he flies over the North Pole, causing him to become stranded. But he gets airborne again with help from a whale.
Jimbo is to escort the Old Timer to a wartime convention in Miami, Florida, USA. but ends up becoming trapped in the mysterious Bermuda Triangle.
Jimbo is sent on a Top Secret mission to help with the launching of a rocket. The Chief, Control Tower and all, are also sent to launch it, but they end up launching the Control Tower by mistake!
The Chief brings along his nephew to teach him how to be a proper airfield chief, much to Jimbo's dismay. but the apprentice's cockiness becomes his downfall...
Jimbo is sent, along with an animal trainer, to try and capture a rare panda from China. Much to his embarrassment he is disguised as a panda as camouflage, but the Chief ends up laughing on the other side of his face when Jimbo returns with a live Chinese dragon...
Jimbo sets off with a tropical explorer to find an ancient ink well that writes with pure gold. However, the result isn't entirely successful...
A little old lady who lives near the runways is complaining about the noise, which means that Jimbo's engines are constantly muffled. However, the Chief realises his mistake when he does some investigating: the noise nuisance came from a radio-controlled model plane.
When Father Christmas's sleigh is stolen, Jimbo is sent to help deliver presents all over the world in time for Christmas.
A round-the-world air race is set and Jimbo wishes he could take part. He gets his chance when he has to hurry the race judge to the finishing line when he arrives at the start by mistake! Low on fuel, Jimbo relies on rocket power to get to the finish in time.
A special display of Red Devil Planes are prepared for a retiring Admiral, but when one of them is unavailable, Tommy Towtruck tries to masquerade Jimbo to look like one of them. However, the paint is not entirely waterproof when a storm breaks...
The Airfield Administration decide to build another "Jimbo" for their fleet. To avert another mishap, the Aircraft Factory decide to build the new plane using computers - only this time, they mistake centimetres for yards!