USNRET Posted December 28, 2017 Share Posted December 28, 2017 At 100’ AGL on short final Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted December 28, 2017 Share Posted December 28, 2017 1 minute ago, USNRET said: At 100’ AGL on short final In English? Quote Link to comment Share on other sites More sharing options...
SonicSeeker Posted December 28, 2017 Share Posted December 28, 2017 Ugly. Quote Link to comment Share on other sites More sharing options...
babadono Posted December 28, 2017 Share Posted December 28, 2017 "shavings in the pan" Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted December 28, 2017 Share Posted December 28, 2017 8 minutes ago, SonicSeeker said: Ugly. Definitely not Mike's hands. He doesn't get dirty any more. Quote Link to comment Share on other sites More sharing options...
SonicSeeker Posted December 28, 2017 Share Posted December 28, 2017 Not what you want to see when you pull the plug. Quote Link to comment Share on other sites More sharing options...
USNRET Posted December 28, 2017 Author Share Posted December 28, 2017 38 minutes ago, CECAA850 said: In English? 100 feet above terra firma just prior to touchdown. Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted December 28, 2017 Share Posted December 28, 2017 Just now, USNRET said: 100 feet above terra firma just prior to touchdown. Thanks for the interpretation. You gotta put oil in those things donchaknow? Quote Link to comment Share on other sites More sharing options...
USNRET Posted December 28, 2017 Author Share Posted December 28, 2017 AGL Above Ground Level MSL Mean Sea level An AGL measurement determines the height above the ground. This measurement changes as the topography of the earth changes, when a plane flies above it. For example, if a plane flies a steady course at 10,000 feet above ground level initially, then a 10,000-foot-high mountain would make the AGL 0 when the two objects come together. In this scenario, the MSL would not change An MSL measurement refers to the altitude or height above the average height of the oceans and seas. An MSL is a reference point for elevations. The MSL calculation is derived from observations of tides and seasonal variations over a 19 year period to arrive at the average MSL. A plane that flies at 10,000 feet MSL and stays level will register as flying at 10,000 feet MSL -- no matter the terrain changes below the pilot. Quote Link to comment Share on other sites More sharing options...
USNRET Posted December 28, 2017 Author Share Posted December 28, 2017 Quote Link to comment Share on other sites More sharing options...
JL Sargent Posted December 28, 2017 Share Posted December 28, 2017 It would be interesting to see the actual gear(s) that swarf came from. Quote Link to comment Share on other sites More sharing options...
USNRET Posted December 28, 2017 Author Share Posted December 28, 2017 2 minutes ago, JL Sargent said: It would be interesting to see the actual gear(s) that swarf came from. It'll be a while but I am requesting those photos on teardown. Quote Link to comment Share on other sites More sharing options...
JL Sargent Posted December 28, 2017 Share Posted December 28, 2017 Mike, what kind of onboard vibration sensors are in place and did they give any early warning (IE: increased vibration) before this failure. Is trending data available? I've been doing vibration analysis and trending on industrial equipment for the last 30 years as a service business. Quote Link to comment Share on other sites More sharing options...
DizRotus Posted December 28, 2017 Share Posted December 28, 2017 Gearbox in what? Quote Link to comment Share on other sites More sharing options...
USNRET Posted December 28, 2017 Author Share Posted December 28, 2017 Just now, JL Sargent said: Mike, what kind of onboard vibration sensors are in place and did they give any early warning (IE: increased vibration) before this failure. Is trending data available? I've been doing vibration analysis and trending on industrial equipment for the last 30 years as a service business. Old school aircraft without onboard trending. We run vib analysis on condition. No early warning. Chip detector light with lose of generator, EDC (engine driven compressor for air con / pressurization) and loss of gearbox oil pressure. Engine drives Reduction Gear Box where different ratios are involved to drive the propeller (13.54:1 for a prop speed of 1080) and the idler gear that failed spins other ratio gearing for the other accessories. Quote Link to comment Share on other sites More sharing options...
DizRotus Posted December 28, 2017 Share Posted December 28, 2017 2 minutes ago, JL Sargent said: Mike, what kind of onboard vibration sensors are in place and did they give any early warning (IE: increased vibration) before this failure. Is trending data available? I've been doing vibration analysis and trending on industrial equipment for the last 30 years as a service business. Didn’t Jimmy Stewart play you in that reindeer movie? Quote Link to comment Share on other sites More sharing options...
JL Sargent Posted December 28, 2017 Share Posted December 28, 2017 1 minute ago, DizRotus said: Didn’t Jimmy Stewart play you in that reindeer movie? Pretty much LOL. 1 Quote Link to comment Share on other sites More sharing options...
USNRET Posted December 28, 2017 Author Share Posted December 28, 2017 7 minutes ago, DizRotus said: Gearbox in what? T56-A-14 (upside photo as this is one for the C-130 but same difference) 1 Quote Link to comment Share on other sites More sharing options...
USNRET Posted December 28, 2017 Author Share Posted December 28, 2017 Quote Link to comment Share on other sites More sharing options...
DizRotus Posted December 28, 2017 Share Posted December 28, 2017 2 minutes ago, USNRET said: Whew . . . I was afraid it might have been in something hazardous, like a copter or 4-wheeler. Quote Link to comment Share on other sites More sharing options...
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