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I'm surprised cowl seal material isn't always installed between two sheets of aluminum, rather than simply depending on a rivet head to retain it.

When I had my harrowing winter ice experience, it was with a warm airplane that someone else had just flown for the previous hour. We did refuel from underground tanks at the resident FBO - and that's where I would guess the water/snowflakes came from. When confronted with a flaky sample after...

In NW Wisconsin (KSSQ). Best in snow country is a SW facing hangar with asphalt taxiways. Keep a snow blower in the hangar. Silicon spray is wonderful for preventing ice from sticking.

Another source of water for those dealing with sub-freezing temperatures - Years ago, I had a warm 172H engine fail immediately after liftoff at KFCM in bitterly cold weather. I ended up tear dropping to a parallel runway landing down wind, never having left the boundaries of that airport. A 1...

Maybe 25 years ago found spikes on the Ford alternator output were tripping the over voltage sensor in our 172M. Can't recall the source (probably the alternator slip rings), but replaced alternator. We used a handheld 1/2 hp electric motor and vee belt to drive the alternator in our hangar...

Tubes done right and applied conservatively, must age remarkably well. Never serviced my HP 130C in the ~35 (?) years I've had it, but it does take a couple of minutes to warm up if it has been sitting for a couple of months. To me the benefit of analog vs digital is WYSee is WYGet. Been...

I can beat all of you on age etc. A 600 KHz HP 130C from the 1960s w 0.2 mv/cm sensitivity for both X and Y axis, differential input, X time base of course. Never replaced any thing internally. And most importantly, no anti-aliasing filters needed. Diagnosed an over voltage sensor on our...

Amazed at the voltage drop table. Is this is after a trip with the rated breaking current? These things won't last forever for sure.

probably would drive around never getting above 2nd gear.

It would be interesting to know how deep those corrosion patterns go. IOW how much oversize would the holes have to be reamed or drilled to clean up? Strictly airboat stuff now.

Not ready for solo.

Did Corona pass E bound in a 150hp 172M @ 14,500. Mixture control seemed a little squirrely/touchy was the only thing I noticed.

Possibly a metal defect in the original forged blank - that may be common in McCauley props. From a hub fatigue standpoint the numbers stamped seem a more critical source. Maybe look at some other McCauley props? Never heard of hub failures in fixed pitch props, only blade failures from...

It is important to recognize up front when special measures must be taken to remove an uncooperative screw, including removing paint or any grease, and the quality of the driver. There comes a time to call in an experienced motorcycle mechanic. In general, they will look for unworn...

Possibly there are few if any regulations regarding seaplanes on that specific lake. But that lake isn't really big enough to operate a 206 (especially) more than once in an emergency without raising real noise and safety issues with the neighbors. There will be a thousand reasons raised why not.

Maybe sheet plastic films have similar optical properties to hydrocarbon fuels. That might make them absolutely disappear until the tank is drained?

If stopped in the air, will a typical stopped Rotax engine installation crank itself for restart from just diving airspeed via the prop torque?

If you still suspect the linkage, You must ground test it only by first defeating that unobvious strut assembly feature that forcibly hard-centers the nosewheel on full strut extension after liftoff. This automatically centers the nose wheel on initial touchdown to help keep you out of the...

The other part of plug removal ritual is to first remove the bottom plug, then only remove the top plug when the piston is at TDCenter when both valves are closed. Seems to me that the potential contamination crud around the piston top ring groove could be an order of magnitude more than might...

The way to being always easy to remove plugs next time without damaging the helicoil, was to carefully wire brush the threads in the cylinders with a small rotating wire brush in a drill to remove the crud. Doesn't anyone else do this? Reinstall w anti seize of course.