Hugo Eckener argued that the fire was started by an electric spark which was caused by a buildup of static electricity on the airship. The spark ignited hydrogen on the outer skin. Seeking the quickest way to ground, the spark would have jumped from the skin onto the metal framework, igniting the leaking hydrogen.

The Hindenburg was a 245-metre- (804-foot-) long airship of conventional zeppelin design that was launched at Friedrichshafen, Germany, in March 1936. It had a maximum speed of 135 km (84 miles) per hour and a cruising speed of 126 km (78 miles) per hour.

Hindenburg was powered by four reversible 890 kW (1,190 hp) Daimler-Benz diesel engines which gave the airship a maximum speed of 135 km/h (84 mph). Although the Graf Zeppelin had the same engine car design in its early stages of construction, the pods were later completely redesigned to power tractor propellers.

111 hours 44 minutes

The main reason you never see airships in the sky anymore is because of the huge costs it takes to build and run them. They’re very expensive to build and very expensive to fly. Airships require a large amount of helium, which can cost up to $100,000 for one trip, according to Wilnechenko.

And while airships (or blimps) can still be seen occasionally, they’re often in the rather genteel form of hovering and providing aerial views of live sporting events for television. But—thanks to the advance of modern technology—it seems airships are on the verge of making a comeback as a serious form of transport.

Rides aboard the Goodyear Blimp are by invitation only. All passengers who have received invitations to fly on the Goodyear Blimp must call and register with the airship base and be placed on the confirmed reservation list (in advance) in order to be cleared to fly.

The reason there are so few blimps in the world is because there were thousands of them during the Nazi period of Germany, many flying the Nazi symbol. For some reason every time the British or American military tried to use one it crashed.

Average Salary: Blimp pilots can expect to start somewhere around $25,000 per year. An experienced blimp pilot can earn more like $70,000 per year.

Today, the Van Wagner group, an airship organisation, estimates that there are only 25 blimps currently operating around the world; there are even fewer zeppelins. While conventional airships take on air to descend, they must still dedicate most of the space in the helium envelope to actually storing the helium itself.

How long can an airship stay aloft ? Our airships could stay aloft, without refueling, for up to 24 hours.

1,000 to 7,000 ft

Q: How much does it cost to fill a blimp with helium? A: Initially, it costs $40,000 to inflate the largest blimps with helium. That’s a one-time expense, however. After that, the blimp will need only occasional refills in the event of minor leaks.

USS Akron

There’s no bathroom (or drink service), and the drone of the engines is so loud you have to wear a headset if you want to hear anyone say anything. Goodyear is in the process of replacing its three-blimp fleet with the Zeppelin NT, a semi-rigid ship that is 55 feet longer and much, much quieter.

Werner G. Doehner, the last survivor of the Hindenburg disaster, which killed three dozen people in 1937, died on Nov. 8 in Laconia, N.H. He was 90. The cause was complications of pneumonia, his son, Bernie Doehner, said.

Today, there are no survivors left. The last survivor Millvina Dean, who was just two months old at the time of the tragedy, died in 2009 at the age of 97.

Max Pruss was in command of Hindenburg when it was destroyed by fire at Lakehurst, New Jersey on May 6, 1937. He survived the crash, but suffered very serious burns on much of his body, including his face, and remained in a New York hospital for many months.