Annotated Mind Map [NASA Challenger Disaster]
A Coggle Diagram about Event/Time Sequence (Challenger lift-off time post posted, now scheduled for early afternoon. However as lift-off time approached and the 51-L was not equip for night lift-off, it was scheduled back to morning lift-off, with better lighting. (NASA,1986), Flight 51-L Challenger, originally scheduled for launch in July, 1985. (NASA,1986), Change to shuttle's payloads between January and November, 1985, to accommodate satellites and new equipment for testing. (NASA,1986) , Communication satellite launched, to communicate with space shuttle during and after launch. (NASA,1986)), Planning 51-L mission had begun in 1984. (NASA,1986), Flight Planning and Stowage Review was conducted on August 20, 1985. (NASA,1986), 51-L flight crew trained 5-7 weeks before the flight, exceeding the number of training hours required. (NASA,1986), Flight readiness examination for the 51-L was conducted on January 15, 1986. (NASA,1986), After time taken for crew assignment and training, the launch was postponed to late November, 1985. (NASA,1986), At 09: 10 a.m, the countdown was halted, ground crew had that reported a problem with an exterior hatch handle had occurred. Once the hatch handle problem had been solved it was already 10: 30 a.m and the winds had increased to and unsafe level of crosswinds.
The launch was then postponed. (NASA,1986), The weather was forecast to be clear and very cold, with temperatures dropping into low twenties overnight before the morning of the launch., Concern was expressed by the engineers, stating that the O-rings couldn't handle the temperature and would expand enough to seal off right solid rocket booster. NASA ignored this issue and continued the launch anyway. (NASA,1986), Ice had accumulated in the launch-pad area during the night and was checked again at 3: 00 a.m. NASA,1986), Lift off of Challenger began at 11:38:00.010 a.m., on January 28, 1986. (NASA,1986), Disintegration of the vehicle occurred after O-rings seal in its right SRB failed 73 seconds into liftoff. (NASA,1986) and The 7 astronauts on the 51-L died during failure and impact when the shuttle and debris landed in the Atlantic Ocean. (NASA,1986)), Workplace (Work Environment, Launch Site and Workplace factors), Human Factors (Morton Thiokol managers, Engineers and Astronauts), Systems (Safety Systems and Mechanical) and Management (Organisational procedures)