contractor had failed to perform a proper inspection and had kept poor records. The incident resulted in the NTSB issuing an advisory recommending improvements to maintenance rules throughout the industry. Flight 558 On Sunday January 7, 1996, ValuJet Airlines Flight 558, another DC-9-32, FAA registration N922VV, while on climb out from Hartsfield Jackson Atlanta International Airport, a malfunction in the ground shift mechanism, which detects when the aircraft is on the ground, prevented normal auto-pressurization of the cabin. Because of this, the crew pulled the Ground Control Relay (GCR) circuit breakers H20 and J20 to bypass the ground shift mechanism and commence normal pressurization. When on the final approach to Nashville International Airport's runway 02R at 100 feet, the cabin was completely depressurized, so the captain reset the breakers, which activated the ground shift mechanism. As a result, the spoilers suddenly activated automatically, causing the jet to enter a high sink rate, striking the runway at full power and in a nose high attitude. Five people received minor injuries. Flight 592 ValuJet Airlines Flight 592, another DC-9-32, crashed in the Florida Everglades on Saturday, May 11, 1996, due to a fire caused by the activation of chemical oxygen generators that were illegally shipped in the cargo hold by ValuJet's maintenance contractor, SabreTech. The fire damaged the airplane's electrical system and eventually overcame the crew, resulting in the deaths of all 110 people on board. The airplane was on its way from Miami to Atlanta. See also List of defunct airlines of the United States References External links Archive of the ValuJet website NTSB Aircraft Accident Report ValuJet Airlines Flight 558 Airlines established in 1993 Airlines disestablished in 1997 Companies based in Clayton County, Georgia Defunct airlines of the United States Defunct companies based in Georgia (U.S. state) Defunct low-cost airlines