On this page, there's an animated diagram (aptly done in shockwave) about normal shockwave formations:- http://selair.selkirk.bc.ca/aerodynamics1/High-Speed/Page2c.html Something confuses me though. As diagrammed, the red pressure wave at the rear has a low frequency at the front and a high...

I was trying to explain to a non-pilot why increased power is required with altitude. She said "isn't the air thinner up there so there isn't as much resistance?" I said "yes, but the plane needs to fly fast enough for the air over the wings to feel like it does down low. So the speed required...

I remember that sin c = excess thrust/weight What step do I then do to convert sin c into degrees above the horizon? TIA

Just wondering if anyone out there has used or is using the Bendix King KLN 90 GPS? In particular what are owners impressions overall of the unit. How easy is it to use? Screen any glare issues etc Thanks in advance

Would someone please give me the specs for the AC-DC transformer for the ICOM A-23? I've misplaced mine and ICOM wants $40 for a replacement. I can probably do better with a generic one from Radio Shack. I need to know the polarity, DC voltage, and amps. Thanks (Sorry for the cross-post to...

I'm in need of an aircraft ferrying service between Wyoming and Arizona. Anyone out there ever use a professional ferrying service? If so, what was your experience? Advice/Recommendations appreciated.

In October, after an extensive repair/restoration of my airplane, the oil cooler split on start-up and dumped most of the oil. Long story, but the engine seized up 6 minutes into the flight and we did an emergency landing in the desert. We were very fortunate to walk away with minor injuries,...

Anyone here know any pluses or minuses about them? Specifics (other than all the usual every-airplane items) to look at on pre-buys? Thanks in advance.

Considering a last-minute invite. Of course it's late-late-late, no surprise that the "preferred" hotels are all sold out. Ya have to wonder about the two or three that still have vacancies ... advice?

CBS noon news reported the crash of a Bonanza out of the Lufthansa Flight Training School at Goodyear Airport. The student pilot was a 22 yr-old woman, here from Germany since December, with 49 total hours, 5+ solo hours, on what was supposed to be an hour-long solo flight. No emergency radio calls...

I am a new airplane owner (since May). My mechanic replaced my battery last June. No choices, I figured he bought the one it needed. Just serviced it (added water). It's in a REALLY awkward spot to get at and see inside the cells -- on the floor under the instrument panel of a plane with no doors...

Writing for a friend with an Arrow that is having a recurring starter problem. The battery has been charged and tested, everything else checks out, and there is the right amount of voltage at the starter. It works once or twice (in a row), then if left overnight, it won't restart (no response from...

Can anyone recommend a good, trustworthy mechanic for SE in or near the Rochester, Minnesota area? Thanks.

Our airport terminal has a VFR Sectional Mural of the United States, taking up one entire wall of the pilot lounge. I've searched online, but can't find such a product. Does anyone know if it exists or where to find it?

Finally picking up my airplane tomorrow after a 2-month annual. Just bought it in April. It is a '61, and despite logbook entries that SAY annuals have been done every year, it was pretty clear the majority of stuff under the cowl hadn't been touched in a LONG time. Picking it up tomorrow. Along...

Giffords and her husband, retired Navy captain Mark Kelly, joined approximately 400 airmen, military retirees and their families at the Davis-Monthan Air Force Base in her district. On the menu: a traditional Thanksgiving meal, plus prime rib, baked ham, shrimp, assorted cheeses and desserts. Her...

Hi everyone, thanks for a great NewsGroup! I have recently started off my Pilot career(having had a dream to fly for about 20 years)! Well, with just 19 hours in my brand-new logbook and my first solo-flight only 3 days ago, I am really excited and ready to go. (I have another lesson in about 2...

It looks like I'll be moving to the San Fernando Valley. I don't know exactly where I'll be living but I expect to have reasonable access to VNY, WHB and BUR. I'm looking for recommendations, postive or negative, for airports, FBO's, clubs, etc. I'm a private pilot with no professional...

I've been thinking of buying an aviation-specific handheld GPS to replace the little hiker's model I've been using. NW_pilot's saga has convinced me that a good unit really can be a life saver. Any recent pireps on the new models? Lowrance 600c does seem to give the most performance for the...

So I finished the instrument rating, which was indeed no fun at all and am in the process of completing the move to LA. Already accomplished is picking up low-altitude and sectional charts. What I see is that for a lot of trips out of the LA area, the sort of airplanes I normally rent can't get...