What: Southwest Airlines Boeing 737-3H4 en route from Phoenix to Sacramento Where: Yuma International Airport, AZ When: 01 APR 2011 Who: 118 aboard Why: A hole burst through the top of this Boeing while en route. The plane suffered decompression, descended to a safe level (when an attendant was injured) and made an emergency landing in Yuma.
The hole has opened a witch hunt on aging Boeings in search of the kind of metal fatigue that would result in a hole during operations now that the aluminum skin has been known to separate at the lap joints, where panels are spliced together. Although the incident did not result in death, it is being taken as a “warning.” 175 Boeing 737 are slated for examination, and maintenance programs (Southwest, FAA, Boeing) are being re-evaluated to take this into account.
Discussion of lap joint and the 3 rows of rivets. The skin separated at the lower rivet line. Pre-existing fatigue existed on the fracture surface. (Multi site damage.) The decompression happened 18.5 minutes after take-off, and no pre-indications. The flight crew immediately declared emergency.
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What: Indian Air Force MI-17 helicopter en route from Tawang to Guwahati Where: Bomdir area bordering China When: Nov 19 2010 Who: 11 aboard Why: The Indian Air Force helicopter that took off around noon from Tawang exploded not long after, and crashed in the Bomdir area bordering China. Three crew members, eight IAF personnel below officer rank and an Army Lieutenant Colonel were killed. No one survived the crash. All the bodies have been recovered but not identified yet. The crash is being attributed to weather and is under investigation by a Court of Inquiry.
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What: small turboprop plane Where: Charlotte/Douglas International Airport. When: 7 a.m Who: information not available Why: Pilot reported a hydraulic problem at 6:30 am and landed safely at 7. Passengers were taken off the plane and transported by bus to the concourse.
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