Non-standard unloading procedures appear to have caused a Polar Air Boeing 747 freighter to adopt a spectacularly high nose attitude on the ramp at New Delhi airport, India, during the night of 6-7 June. Ground engineers who inspected the aircraft have reported that main-deck cargo pallets seem to have been unlocked while unloading proceeded from the lower cargo bay. While the main deck cargo was being moved, it rolled aft, tipping the aircraft onto its tail, crushing a loading device and causing damage to the lower aft cargo door. Nobody was hurt.
Source: Flight International