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Went up to do some pattern work and to check the drift or precession of the club plane's Heading Indicator (HI). After engine start I set the HI to the magnetic compass value, It was about ten minutes later that I was at the end of the runway ready to take off. The HI differed from the compass...

"Octane numbers are a scale for rating the power gasoline will deliver." That's a Mickey Mouse explanation.

The clock in the club Aerobat is inop. While figuring how to get the plane legal for IFR I looked into replacements and found this: http://www.fdatasystems.com/gt-50/ Typical price is about $174: https://www.aircraftspruce.com/catalog/inpages/flightdatafc50.php According to their FAQ: Will the...

Could have been filed under this category: https://en.wikipedia.org/wiki/Suicide_by_pilot

They look good!

Or stick a wad of gum on the outside edge of a prop? Just kidding too! I'm pretty sure I've seen hesitant altimeters before, mostly during climbs after takeoff when I'm looking at it more frequently to see when I've reached a specific altitude such as 300 ft below pattern altitude. Just did a...

I started my flight training in gliders and one thing I picked up was it helped to tap on the altimeter. Otherwise the needle may sometimes move in jumps as friction seems to make movement a bit sticky. Never did that in a powered airplane because the engine adds sufficient vibration to keep...

I'd be good with that. Actually I would have been Ok with the original wording. I'm not humble but when I took my check ride I already had in mind a possible outcome of "Well at least I still get to fly." Because under most scenarios the student still gets to fly, even solo, after a failed check...

A shadow does quickly diffuse because the sun isn't a point source. So a small object at altitude can have effectively no visible shadow. So that is a possible reason it wasn't visible, so I only described my observation and did not draw any conclusion. The orb's light/dark reflection not...

In the overhead shots where it is clearly sunny because things on the ground are casting shadows, where is the shadow of the orb? I ran them at quarter speed and would have at least expected to see a hint of a shadow of the orb in the 11 to 13 second period of the first video. At about the 17...

Hmmm. Looks like it was a ground control ordered rapid disassembly when stage separation didn't happen as planned. Even with five engines out their ground control chatter continued to report nominal operation on the remaining engines. Speculating: perhaps because a loss of some engines means...

It exhibited the same problem during the one static fire test: failure of several engines. I suspected something wrong by the slow acceleration on launch because the thrust to weight ratio is supposed to be higher than the Saturn V.

Congrats to whoever voted for blowing up well clear of the launch area.