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Just realized both patents are expired and they contain circuit diagrams. DIY lightning detectors anyone?

Here are some patents: https://patents.google.com/patent/US4023408A/en https://patents.google.com/patent/US5295072A/en From the first patent: "The azimuth of the display is indicative of the azimuth of the electrical activity. The distance from the reference location to any illuminated...

I plan to lease a personally owned airplane to an incorporated non-profit flying club for its exclusive use. I've been pondering what needs to be done, if anything, to limit my liability if harm is caused by the airplane while used by a club member. According to 49 U.S. Code § 44112 - Limitation...

A fairing doesn't seem likely to be in a MEL.

One company is after prize money: "Astrobotic Technology inc., commonly referred to as Astrobotic is an American private company that is developing space robotics technology for lunar and planetary missions. It was founded in 2007 by Carnegie Mellon professor Red Whittaker and his associates...

According to locals posting to nextdoor.com a B1 bomber allegedly crashed while landing on the runway at Ellsworth AFB. It caught fire and the 4 crew members safely ejected. Neighbors reported sounds of explosions. None of that info is officially confirmed.

Stagnating economy may have been one possible cause. I did start investigating interest rates and they did spike in the eighties (see attached graph created from https://fred.stlouisfed.org/series/PRIME#) Aircraft being financed would put a crimp on sales during high interest periods. If, as is...

Here's a bit of research I did on the affordability of single engine airplanes from 1956 to 2022. I defined an "affordability" index as the number of years of household income it would take to buy a new Cessna 172 at the introduction price for the year of purchase. The numbers used were NOT...

He used to hang out in the Usenet soaring group which I read and occasionally posted. I recall having a discussion with him about Ralph Merkel's contribution to public key cryptography (If I recall correctly, Hellman said Merkle's paper on the subject was allegedly difficult to understand, so...

Just realized that the first sentence I quoted doesn't use the word "sectional" and indicates the audio includes the word VOR. The section above it says: Most VORs are equipped for voice transmission on the VOR frequency. VORs without voice capability are indicated by the letter “W” (without...

I did a quick scan of VORs in my area then spot-checked around the country and didn't see any with VOR after the name. Then I located and downloaded FAA data AIRNAV data files but they don't seem to have a field that designates VORs with voice IDs, unless it is buried in the type_code or some...

Local story of recent storm. Belle Fourche airport pummeled by storm damages three hangers and eight aircraft

Lycoming has a service letter on that subject: https://www.lycoming.com/sites/default/files/attachments/Engine%2520Preservation%2520for%2520Active%2520and%2520Stored%2520Aircraft.pdf They say: "Engine temperature and length of operating time are very important in controlling rust and corrosion...

Possibly a structural problem? The left wing appeared to be folding up and back well before the angle of attack got unreasonably steep. Once the wing started twisting back it appeared to force plane to pitch up steeply. I've seen those ag planes at work and they seem to fly similar climbs at...

Appreciate the clarifications re MEL. I think my original question was answered with the considered opinion "So per the 213(d) guidance I would determine it does not constitute a hazard and placard it INOP with a corresponding log entry. And given it requires no maintenance a pilot could...

The Cessna 150 was type certificated under CAR rules so a minimum equipment list would not likely exist (and I have searched.)

Their argument rests on flaps being secondary control surfaces rather than "instruments and equipment". And that seems reasonable since the article dealt only with the actual flaps. But in this scenario the flaps work, only the flap position indicator is inop. The flap position indicator itself...