Feb 1915: commissioned officers and sons of the gentry find it hard to be accepted for training by the Royal Flying Corps, so what chance for Alan Farmer, a blacksmith's son?
"If your engine fails on take-off, never turn back." Alan Farmer is all too aware of the error that caused his father to burn to death.
Alan joins his squadron in France, meeting an old friend and a new enemy - a Hun with a machine gun.
Fourth part of World War One drama. A General pays a visit to St Marie with a special task for 'C' Flight.
Becket's Hill joins the war effort, while in St Marie 'C' Flight springs into action under the command of Capt Triggers.
Charles Gaylion is forced down in no man's land. Machines are a precious resource and a rescue operation is planned.
A proposed trip to Blighty. Charles is delighted. But Alan is not looking forward to his promised meeting with Lorna.
The German plane armed with the machine gun has become more than troublesome. Alan and Charles decide to hunt them.
A problem for Captain Triggers: how to shoot down a German kite balloon. And a problem for Alan: Kate is in Paris.
Capt Triggers is puzzled by his pilots' reports. Why is a French plane shooting down British machines?
When Alan Farmer is accused of cowardice and faces a court martial, Charles Gaylion decides to defend him.
Final episode from the first series of World War One drama. Alan comes home on leave to not quite the reception he might have expected.
Sgt. Alan Farmer's home leave ends just as his squadron in France are preparing for a very special visitor - the General Officer commanding the Flying Corps.
Special Flight are ordered to bomb a Zeppelin base. Sgt Alan Farmer has other ideas.
Landing a spy behind enemy lines brings the war tragically closer to Captain Triggers. Particularly when the spy is a woman.
The punishment for cowardice is death. Captain Triggers is forced to act when one of his pilots loses his nerve.
Posted back to England, Lieutenant Charles Gaylion meets new hazards.
Special Flight has become a threat to the superior enemy monoplane and the German pilots plan a dawn attack on the St Marie.
What are Charles and Lorna to tell Alan when he arrives home on leave, expecting to be married?
Sgt Farmer is recommended for a commission, but killing an unarmed man is hardly the conduct expected of an officer and a gentleman.