Borescope Ascendancy

Time to topple the venerable compression test? The venerable compression test: past retirement age? The differential compression check has been a mainstay of piston aircraft engine maintenance for the last 80 years. Like anything else in aviation that’s been...

Fiddly Bits

If there were a TV show where I could watch A&Ps, or just plain owners, swinging wrenches on airplanes, I’d probably watch. I’d at least give it a look. Ice Pilots and Flying Wild Alaska and Airplane Repo tend more toward the challenges of...

Field Approvals

Do you really need the FAA’s blessing to modify your aircraft? Does this require a field approval? A Bonanza owner wanted to power his portable GPS and his iPad simultaneously in flight, so he asked his avionics shop to install an extra cigar lighter socket on the...

Pi in the Sky

How can rational numbers be so irrational? Actually, upon examination what we discover is that there’s usually a perfectly logical explanation for why an engine parameter is displaying its pattern. Even the impossible jumps from a failing probe have a logical...

Buy…or Walk Away?

Thoughts about when to purchase and when to pass. Who among us hasn’t spent hours looking at Trade-A-Plane or Aircraft Shopper Online looking for that perfect low time airplane with a fresh engine overhaul, new paint and interior, great avionics, and a bargain price?...