Airworthiness

image: Civil Aviation Safety Authority

The cable saga

In the five years since a very near miss put the issue of flight control deterioration into clear focus, sixty-one unserviceable and potentially dangerous cables have been discovered on aircraft, and four cable failures. It...

Grinding gear

A known and documented problem continues to cause embarrassment and expense for Cessna operators. It was a memorable sightseeing trip, for the wrong reasons. The aircraft passengers got a ‘near death experience’ anecdote to enliven...
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The Duchess and the case of the disappearing bolt

A recurrent issue on a popular training aircraft illustrates the many factors influencing aircraft reliability. The Beechcraft Model 76 Duchess has introduced a sizeable proportion of Australia commercial pilots to the pleasures and perils of...
Picture of Avgas 100 LL tank

Caps tanks and drains: a three-pronged attack

To state the obvious: water in fuel is A. Bad. Thing. Whether avgas or jet A1, fuel and water just don’t mix. And water makes engines stop. Water in fuel takes two forms, dissolved...

Loose trim, close shave

Your aeroplane’s trim tabs are proof that size does not always equate to importance. Trim tabs are used to counteract forces on the control surfaces so that an aeroplane can be flown straight and...
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The great disconnect

A simple failure of a common out-of-sight part can have nightmarish consequences. It now appears there are two ways for it to fail. What do you do, if, as a student pilot, flying solo, you...
Internal diameter of the MIL 6000D hose (right) has shrunk to about 50% of the the same MIL 6000D hose after overnight exposure to Mogas

Choke point

A mismatch between fuel and hose can result in engine stoppage, reports Roger Alder Flexible rubber hoses are like the blood vessels and arteries of your aircraft—carrying fuel, engine oil and hydraulic fluid—and just like...
Cessna 206 pedal

There’s trouble afoot

Cessna aircraft, although generally reliable can suffer a well-documented and dangerous decay of their flight controls. Jane Austen’s Pride and Prejudice, although easily parodied, has unexpected gems of wisdom for the aircraft engineer. To paraphrase...
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Be earnest—or drift into failure

An unsettling incident in a commercial turboprop illustrates the complex genesis of system failure. In the dog days of 2013, between Christmas and New Year, a Cessna 441 Conquest was, unlike most of the country,...
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Crack to the future

If you own or fly Cessna’s popular 210, you need to take a closer look at its wing spars. Next year is 2015, the year Marty McFly and the Doc visit in Back to the...

Airworthiness spotlight

Planet gears implicated in Norway helicopter crash

The Norwegian Accident Investigation Board (AIBN) has issued another preliminary report into the helicopter crash...

Engine explosion jet returns to skies

Airliner take-offs happen several times every second of every day somewhere throughout the world, but...

Cessna deadline extended

Cessna aircraft that faced an airworthiness deadline of 31 December 2015 now have another three...
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Vulcan farewells the heavens

A glorious spectacle is gone from the skies of Britain, with the retirement of the...

Bulletins highlight D-ring dangers

Helicopter Winching and Passenger seat belt attachment warning CASA has published a series of airworthiness...

Directive covers possible instrument failure

Primary flight instruments that could fail without notice or indication are the subject of a...

Check your hose before it blows

When did you last think about your aircraft’s hoses? Have you ever thought about how...

CASA considers changes to propeller inspections

CASA is proposing clearer and simpler criteria for propeller maintenance. A proposed amendment to airworthiness...

CASA grounds R44s after NZ crash

CASA has issued an emergency airworthiness directive grounding Robinson R44 helicopters over fears the main...

SIDS program finds dangerous defects

Cessna owners are getting a safety dividend from the SIDS (supplemental inspection documents) inspections that...

Door jam alert for Super Pumas

The European Aviation Safety Agency (EASA) has issued an airworthiness directive for the Airbus Helicopters...
Wreckage of the Piper PA-34

Crash discovery prompts fuel valve check

A fatal crash at Broome in 2012 has resulted in an airworthiness bulletin for operators...

Hot under the hood

Service Difficulty Report – 510019053 Component: Personal breathing equipment (PBE) Problem: Faulty oxygen generator Possible consequence: Fire injury An...

Bulletin highlights corrosive effects

Engines usually wear from the inside out but corrosion can shorten their lives and even...

Window surround cracking

Service Difficulty Report - 510018970   Aircraft: Swearingen SA227-DC  Metro 23 (a twin-engine, 19-passenger turboprop often...