Time & Materials
Why is GA maintenance done on a T&M basis, which places all the risk on the aircraft owner and none on the shop? A successful surgeon put his Beechcraft Baron 58 in an Arkansas shop for a makeover. He wanted...
AOPA Pilot Magazine
Deadly Switches
That ubiquitous key-operated ignition switch is fraught with peril On July 26, 2018, private pilot Lanny Steven Kramer of Sarasota, Florida, and his wife Fran flew to the Cleveland Regional Jetport (RZR) in Cleveland, Tennessee to run some errands, after...
Miracle in Sioux Falls
My hapless blunder en route to Oshkosh triggered a series of incredibly fortuitous events. It was mid-July and my annual pilgrimage to AirVenture Oshkosh was rapidly approaching. I’d finished preparing PowerPoint for the 11 different presentations I would be making....
Fortunate Catch
A maintenance-aware owner is the last line of defense against maintenance errors Corey owns a 1978 Bonanza A36 and is quite involved in its maintenance. He does his own oil changes and other preventive maintenance. He even bought his own...
Legal interpretations
If you ask FAA lawyers what a regulation means, the answer might surprise you We’ve all studied the regs. If you’re a pilot, you’ve spent hours poring over Part 61 (pilot certification, ratings, currency) and Part 91 (operating rulese, owner...
Unbelievable Compression
How reliable and valid is the almighty compression test? Each annual inspection begins with a moment of terror when the IA removes the top spark plugs and takes a compression reading of each cylinder. We hold our breath awaiting the...
Here to Help?
When it comes to maintenance problems, the FAA might be able help you but only in very limited ways. My April column, titled “Booted Out of Annual,” related a true story of a Bonanza owner who put his plane in...
Mechanic Crisis
THERE ARE NO LONGER ENOUGH A&PS TO MAINTAIN OUR GA AIRPLANES “The annual I scheduled more than a year ago got cancelled on a five-week notice,” read a recent post to the Beechcraft Bonanza Owners Facebook group. The unhappy owner...
Booted Out of an Annual
This unfortunate aircraft owner was placed in an untenable position by an unreasonable maintenance manager Sometimes truth is stranger than fiction. I’m going to change the names—I’ll call the aircraft owner “Oliver” and the A&P/IA “Isaac” and the shop manager...
Ethics of Misdiagnosis
Should you have to pay for work or parts that don’t fix the problem? “Mike, I have an ethical question for you: How should an aircraft owner determine fair compensation to a mechanic for parts and labor that were unnecessary?”...
A Matter of Trust
How far does your IA have to go to verify that your aircraft is airworthy? The subject line of the email got my attention: “Annual gone wrong…please help!” The author—let’s call him Morrie—identified himself as a first-time airplane owner. “I...
Obsessed with EGT
Don’t use exhaust gas temperature as a leaning reference I respond to at least 100 queries from aircraft owners and pilots each week. At least a dozen of those are questions or requests for advice about leaning, and most of...
System Awareness
Situational awareness requires being aware of your aircraft’s systems, too. On Saturday, August 26, 2022, a young CFI took off from Monterey, California in a Cessna 172 on a “Discovery Flight.” His passengers were a young couple, with the man...
When Data Doesn’t Look Right
Using AI and deep learning to detect anomalous engine monitor data Nowadays more than half of the piston GA fleet is equipped with some sort of recording digital engine monitor. Older ones tend to be fairly primitive and record just...
Real-Life Breakdowns
Dealing with mechanicals away from home base. Every aircraft owner dreads a mechanical breakdown while away from home on a trip. In the five and a half decades that I have owned an aircraft—I bought my first plane in 1968...
What Price Speed?
Optimal flying in a world of expensive avgas. With fuel prices at all-time highs, it’s more important than ever for pilots of GA airplanes to fly in a fuel-efficient fashion. I am especially sensitive to this issue because I fly...
On a Short Leash
The best maintenance shops often warrant the closest owner oversight. I’m frequently asked by aircraft owners to recommend good maintenance shops in a particular area, and my company maintains a large database of maintenance resources to facilitate such referrals. Our...
Disastrous Annual
Out-of-control annual inspections are painful—and avoidable. I received a heart-wrenching email from the owner of a Southern California flight school—I’ll call him Chuck—who operates 10 airplanes, mostly Cessna 172s and Piper Archers and Arrows, with a Seneca twin and a...
TBO 5000!
This Skyhawk’s Lycoming had a 2,000-hour TBO, but it lasted a bit longer—3,000 hours longer to be exact. What follows is true, though the names have been changed… It was 2011 and Unruly Flyers had a problem. This 14-member Midwest...
What we have here is a Failure to Rotate
Is the conventional wisdom wrong about why exhaust valves burn? Piston aircraft engines have an awful lot of moving parts. Way too many, if you ask me. The thought of thousands of separate metal parts reciprocating, rotating, wiggling, wobbling, and...
Tulip Fever?
“You snooze, you lose” or “caveat emptor”? The market for used GA airplanes is crazy right now. In the five decades I’ve been paying attention to such things, I’ve never seen anything like it. Other GA industry veterans I’ve spoken...
Grading on the Curve
You can learn a lot from your airplane’s report card Jack owns a 2016 Cirrus SR22 with a Garmin Perspective glass cockpit—basically a G1000 on steroids. His MFD records tons of data on an SD card—CHTs, EGTs, oil pressure and...
Spring-Loaded to Teardown
Does your engine REALLY need to be euthanized? “I’m in trouble. Can you help?” The owner of the vintage Mooney was obviously stressed. He identified himself as a highly experienced military pilot but a first-time aircraft owner who’d recently flown...
Cylinder Rescue
Low compression doesn’t always require cylinder removal Sam’s 1979 Piper PA-34-200T Seneca II was in the shop, and Sam was not happy. The shop had just done a compression test on the plane’s two Continental TSIO-360-EB3B engines and had given...