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Only modifications that carry a Supplemental Type Certificate may be legally installed on an aircraft. The Supplemental Type Certificate guarantees that the FAA has thoroughly tested and reviewed the modification. And it’s the Supplemental Type CertificCessna Floatplane(Photo by TailspinT)ate that insures that the modification is safe and compatible with the particular model aircraft on which it’s being installed. Right?

Maybe not. Owners really shouldn’t place too much stock in an STC. Or so says one former NTSB accident investigator. The investigator, now retired, explained to me that most owners might be surprised by how little work the FAA does before issuing an STC. Sure, the STC process is a huge paperwork shuffle for the modification’s manufacturer. But it’s little more than that. The process seldom entails any real independent engineering cross-check on the FAA’s part.

"Give me an example", I asked. "OK,’ he said. "Let’s talk tip tanks."

A popular modification for many models of Cessna single-engine aircraft are wingtip extensions thatContinue Reading The Trouble With Tip Tanks

In 1994, the FAA — hoping to reduce the number of helicopter tour crashes in Hawaii — promulgated a controversial rule that set minimum altitudes for Hawaiian sight seeing flights.

According to an article appearing this spring in Aviation, Space and Environmental Medicine, after the rule went into effect the overall number of helicopter crashes in Hawaii decreased…

The FAA has instituted new rules designed to keep sightseeing helicopters from colliding with airplanes that are transitioning the Hudson River Corridor near the Statue of Liberty.  The San Francisco Daily Journal, California’s largest legal newspaper, published this column on how the new rules came to pass, and why they aren’t enough.

FAA and

Zodiac AircraftThis past April, the NTSB called upon the FAA to ground the entire fleet of Zodiac aircraft because their wings tend to fall off in mid-flight.  As it turns out, a defect in the Zodiac’s design induces an aerodynamic phenomenon known as flutter.  Flutter can destroy a wing or other control surface in a matter of seconds. …

There’s little question that EMS helicopters are the most dangerous aircraft in the sky. EMS helicopters have a fatal accident rate 6000 times that of commercial airliners. Flying EMS helicopters is one of the most dangerous jobs in America.  In fact, according to the Washington Post, only working on a fishing boat is riskier. …

Aviation manufacturers have long argued that victims should not be permitted to sue for aircraft design defects because, before any manufacturer’s aircraft leaves the ground, its design has to be approved and certified by the FAA. If the aircraft’s design is good enough for the FAA’s engineers, they argue, it should be good enough for the court system.  Judges…

Air traffic controllers work within the guidelines set forth in the Controller’s Handbook (pdf), which they often call "the Bible."  The Handbook is hundreds of pages long, and controllers must follow it to the letter.  If they deviate and an accident results, the Federal Tort Claims Act permits the victim to sue the FAA for negligence. 

Sometimes…

A reader of this post concerning air ambulance accidents asked, “Can the FAA really get away with ignoring the NTSB?"  The answer, to date, is "yes."  And there’s nothing the NTSB can do about it.

The whole reason the NTSB exists is to learn from accidents and make safety recommendations so that similar accidents won’t happen again.