EAA Sport Aviation Magazine
Can a mechanic who works on your plane refuse to sign it off or put it back together? Boston-based Cirrus owner Mark (not his real name) was flying his turbonormalized SR22 home to Norwood Memorial Airport on what was probably...
Don’t Go Overboard
Suppressing the urge to overreact to and overkill problems. The Bonanza owner encountered an engine problem 11 hours after his aircraft came out of annual. He had crossed the Sierra Nevada Mountains VFR at 12,500 feet westbound enroute to the...
Backdoor Rulemaking?
Cessna gets caught with its hand in the FAA’s cookie jar. On February 10, 2014, the Cessna Aircraft Company did something quite unprecedented in the history of piston GA: It published a revision to the service manual for cantilever-wing Cessna...
Discrepancy Discretion
Who decides whether or not your aircraft is airworthy? By Mike Busch My column in the May 2015 issue of EAA Sport Aviation, titled “Fix It Now…Or Fix It Later,” discussed how to deal with mechanical problems on the road....
Why I Hate Pulling Jugs
It’s riskier business than most owners or A&Ps realize. Regular readers of this column know how I feel about changing cylinders in the field. I hate it. Especially when several cylinders are changed at one time; this is risky business....
Alterations
Clearing up confusion about aircraft mods. You want to modify your certificated aircraft. Let’s say it’s something simple like adding an extra cigarette lighter socket to power your portable GPS or cellphone charger. Or installing an external mirror so you...
Fix It Now…Or Fix It Later?
You’re on a trip when a mechanical arises. First you mutter the obligatory expletives, and then you must decide: Should you get the problem fixed now, or live with it until you get home? Nothing is more frustrating than dealing...
Oleos
Oleopneumatic shock struts use hydraulic fluid, compressed gas, and darn clever engineering to improve our landings. If every one of our landings were a “greaser” and if runways never had bumps or potholes, then the landing gear on our airplanes...
150 Year-Old Technology
Most of us are still flying (and driving) behind powerplant technology that dates from the 19th century. The original four-stroke Otto-cycle internal-combustion engine was patented in 1862 by a Frenchman named Alphonse Beau de Rochas. More scientist than engineer, de...
The Perfect Mechanic
What to look for when choosing an A&P to work on your aircraft. Over the past 45 years, I’ve had the opportunity—and often the privilege—of working with hundreds of aircraft mechanics. At first it was as a naïve aircraft owner...
Silent Killer
If you think CO-related accidents are rare, think again… On January 17, 1997, a Piper Dakota departed Farmingdale, New York, on a planned two-hour VFR flight to Saranac Lake, New York. The pilot was experienced and instrument-rated; his 71-year-old mother,...
Prebuy Do’s and Don’ts
If you’re buying an aircraft, here’s how to structure the prebuy. Over the past six months, my company’s prebuy activity has gone right through the roof. We’ve been responding to 30 to 50 prebuy requests a month, perhaps four times...
Energy and Efficiency
Why are our piston aircraft engines so @#$%*! inefficient? Our piston aircraft engines convert chemical energy into mechanical work, but they don’t do it very efficiently. It turns out that only about one-third of the energy contained in the 100LL...
Human Error
“To err is human…” but when humans make mistakes working on aircraft, bad things can happen. During the century since the Wright Brothers first flew, the predominant perpetrator in aircraft accidents has shifted dramatically from machine to human. Today, human...
A Mechanic’s Liability
If your mechanic seems over-cautious and self-protective in his approach to maintaining your airplane, he has good reason. Mechanics have always been subject to FAA sanctions: certificate suspension or revocation, fines, warning notices, letters of correction, and remedial training. But...
A Highly Modified Skyhawk
How does an IA deal with a situation like this? The maintenance officer of a small flying club asked if my company would be willing to manage the maintenance of the club’s 1976 Cessna 172M. The airplane had been flying...
Cylinder Work: Be Afraid
It is nearly impossible to install a cylinder properly when the engine is on the airplane. Here’s why. I suppose it comes as no surprise to readers of this column that I’m not exactly a fan of top overhauls. I...
Scuzzy Skyhawk
Why a thorough, independent prebuy examination is so essential, even for a simple 172. The prospective buyer was looking for a Lycoming-powered Cessna 172 Skyhawk, and had a budget of $35,000. He searched online and found one being offered with...
Ferry Permits
If your aircraft isn’t airworthy but you need to fly it anyway, here’s how. As every pilot knows, it’s strictly against the rules to fly an unairworthy aircraft: §91.7 Civil aircraft airworthiness. (a) No person may operate a civil aircraft unless...
Not-So-Plain Bearings
There’s a lot more to engine bearings than meets the eye. According to Miriam-Webster, a bearing is “a machine part in which another part turns.” Most aircraft have lots of them. Wheels spin on their axles with the help of...
High Oil Consumption
Don’t do anything rash until you’re sure where the oil is going. A fellow named Ted phoned me to say that his 1984 Cessna T210 was in the shop for its annual inspection, and his mechanic was suggesting a $14,000...
Mechanic, Heal Thyself
All airplanes occasionally get sick. Even mine. Every year, I take my airplane on a big summer trip around the U.S., speaking at various aviation events and culminating with a week at EAA AirVenture. This year’s trip was 50 days...
Damage History
The term “damage history” is not well-defined. Here are some thoughts on the subject. One of my clients just had a fancy digital engine monitor installed in his airplane. During the installation, the shop hired to do the work drilled...
FAA’s War on Jugs: An Update
Yikes! It’s far worse than I expected, and it must be stopped. By Mike Busch I must be losing my touch. When I last wrote about this subject 9 months ago—in the February 2013 issue of EAA Sport Aviation—I reported...