Did you know…
How much did it cost Australian volunteers to return a Super Constellation to flight?
Short answer
Volunteers from the Historical Aircraft Restoration Society (HARS) raised $800,000 and contributed 16,000 volunteer hours to return C-121C 54-0157 to flight. It flew again in September 1994 and arrived in Sydney as VH-EAG on 3 February 1996.

A volunteer project
The Historical Aircraft Restoration Society (HARS), an Australian aviation preservation association, set out to bring a flightworthy Super Constellation back to the country. To achieve this it raised $800,000, and its members devoted 16,000 hours of work to the project, all of it voluntary. The result was the return to the air of an aircraft that had been grounded for about eighteen years.
From the Air Force to the Arizona desert
The aircraft was built as a C-121C for the United States Air Force, with serial number 54-0157 and construction number 4176, and was delivered on 6 October 1955. After its operational life, in June 1977 it was placed in storage at Davis-Monthan Air Force Base in Tucson, Arizona, the great American military aircraft boneyard. HARS took it on for restoration in November 1991.
The restoration and the journey
Work began in May 1992 at the Pima Air and Space Museum, next to Davis-Monthan, with an initial five-year plan. The aircraft flew again in September 1994, well ahead of schedule. On 3 February 1996, now carrying the Australian registration VH-EAG, it landed in Sydney. Since then it has been one of the few Super Constellations still flightworthy in the world. As a USAF C-121C, it retains the square windows that distinguished this version from the Navy's R7V-1, which had round ones. Its case is often cited as an example of what an organization built on volunteer work can achieve against the technical complexity of keeping a 1950s four-engine piston aircraft alive.
More questions

Aviation history
What was special about the Vertol 76?
Vertol's VZ-2 tested the tiltwing concept for vertical take-off and landing. After ground trials beginning in April 1957, it first took off on 13 August only… more…

Aviation history
Which was the most-produced American fighter of the Second World War?
The Republic P-47 Thunderbolt, of which 15,636 or 15,683 units were built, depending on the source. It was also one of the heaviest fighters of the conflict… more…

Aviation history
Who flew the E-66 at 2,149 km/h?
Konstantin or Vladimir Kokkinaki, depending on the source. Konstantin is credited with the absolute record on a closed 100 km circuit, at 2,148.66 km/h, set… more…

Fly-by-Owen (CC BY SA), vía commons Aviation history
How many I-11Bs were built?
Between 208 and around 450, depending on the source: one of the AISA I-11 reference sheets gives 208 examples built, while All-Aero speaks of around 400 built… more…

Aviation history
How many HH-53s could be converted to Pave Low III?
Eight HH-53C aircraft received an improved systems package and were redesignated HH-53H Pave Low III. The other figure in circulation, nine MH-53H and 32… more…

SCDBob (CC BY SA), vía commons Aviation history
What did the A129 Mangusta's armor protect?
The fuselage: the A129's airframe is armored and, according to All-Aero, designed to protect against 12.7 mm rounds, with partial protection against 23 mm… more…