The Boeing 747 AAC
Boeing studied a 747 airborne aircraft carrier in the early 1970s, carrying up to ten parasite microfighters launched and recovered in flight. It was never built.
In the early 1970s Boeing revived one of aviation’s most persistent bad ideas, and studied whether the 747 could work as a flying aircraft carrier.
The concept
The 747 AAC would have carried as many as ten parasite microfighters inside its fuselage. They would be released through a bay in the belly, fly their mission, then return and be recovered in flight by a trapeze mechanism that hauled them back inside — where they could be refuelled, rearmed and sent out again.
The attraction was reach. A carrier at sea takes days to reposition and cannot go inland at all. An airborne carrier could be anywhere in the world within hours, and could put fighters over a place with no friendly airfield and no coastline.
Boeing’s study concluded the aircraft could carry the fighters, the fuel, the weapons and the crews to support them.
Why it was never built
Recovery is the problem, and it always has been. Launching a small aircraft from a large one is manageable — gravity helps. Getting it back is not.
A pilot must fly formation with a much larger aircraft, inside its wake, and engage a mechanism precisely, in whatever weather exists. The earlier American experiments with parasite fighters — the F-9C Sparrowhawk on the airships Akron and Macon, and later the XF-85 Goblin — all foundered on the same difficulty, and several killed people.
Nor is the carrier survivable. The whole force depends on one large, unarmed, unstealthy aircraft; lose it and every fighter it launched has nowhere to land.
By the 1970s aerial refuelling had also solved much of the problem the concept addressed. A tanker can extend a conventional fighter’s reach enormously without any of the risk of docking an aeroplane inside another one.
Why it keeps coming back
The idea has never quite died, and it has returned in the drone era with rather better prospects. Programmes such as DARPA’s Gremlins have tested launching and recovering uncrewed aircraft from a transport in flight — the same concept, minus the pilot whose life made the recovery problem unacceptable.
| Manufacturer | Boeing |
|---|---|
| Variant | Boeing 747 AAC |
| Status | Not built |
Artist's impression of the carrier in operation.WikiMedia 
Launch and recovery would both have happened in flight.WikiMedia
Frequently asked questions
- Was the Boeing 747 flying aircraft carrier ever built?
- No. It was a Boeing study for the US Air Force in the early 1970s and never went beyond design work.
- How would the 747 airborne aircraft carrier have worked?
- It would have carried up to ten small parasite fighters internally, releasing them through a bay in the belly and recovering them in flight onto a trapeze mechanism, with refuelling and rearming done on board.
More in Special Boeing 747s
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The 747 ASB
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The 747 CMCA
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The Boeing Dreamlifter
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