QantasLink Flight 1737 was an afternoon Australian domestic flight from Melbourne Airport to Launceston Airport, which was subject to an attempted hijacking on 29 May 2003. Hijack attempt Flight 1737 left Melbourne Airport at 2.50 pm on 29 May. Around ten minutes after take-off, as the crew prepared for the onboard meal service, David Mark Robinson, a passenger seated in Row 7, became agitated, stood up and began to make his way down the aisle. Producing two sharpened wooden stakes from his pocket, Robinson stabbed flight attendant Denise Hickson and flight purser Greg Khan in the head on his way to the cabin galley. Khan tackled Robinson to unbalance him, eventually succeeding despite repeated blows to the back of the head from Robinson's stakes. Several passengers (including a Canadian paramedic, Derek Finlay, a former Canadian soldier in Princess Patricia's Canadian Light Infantry) helped restrain Robinson, holding him down and tying him up with materials found on board. The plane immediately turned back to Melbourne, where Robinson was placed under arrest by Australian Federal Police. He was also found to be carrying aerosol cans and cigarette lighters, presumably to use as a flamethrower. Khan and Hickson were later taken to Royal Melbourne Hospital for treatment, and a passenger who received minor lacerations was treated at the airport by paramedics. Safety and security concerns Despite numerous security improvements following the September 11, 2001 attacks, Flight 1737 lacked certain security arrangements. The door to the flightdeck had not been adapted to completely block access from the outside, and there was no sky marshal on board. Qantas undertook a full security review following the incident and promised to secure the flightdeck doors on all of their aircraft by 1 November. The airline dismissed the suggestion of armed sky marshals on each flight as too expensive, and a full body search of passengers to detect wooden objects as unfeasible. Aftermath In an interview with the Australian Federal Police, Robinson admitted attempting to hijack the plane, which he intended to crash into the Walls of Jerusalem National Park in Tasmania – an action intended to release the Devil from his lair and bring about Armageddon. Robinson also admitted that he had intended to hijack aircraft on two previous occasions. In July 2004, a Supreme Court of Victoria jury found Robinson not guilty of the three charges against him (attempted hijack of an aircraft, attempted murder and