Promoting the safe enjoyment of aviation for pilots, aircraft builders and enthusiasts.
Monitoring oil leakage in airplane piston engines is crucial, as complacency can lead to significant issues. Key indicators of excessive leakage include oil dripping on the nose tire, inability to complete a long trip without oil level concerns, and exceeding manufacturer's recommended consumption. Timely attention to these signs is essential for safe operations.
After changing the engine oil and filter, ensure there are no leaks. Before starting the engine, check the oil level and verify oil pressure after starting. Taxi forward, make a turn, and check for oil trails. If there's a leak, investigate immediately. After a successful runup, check for leaks again. Never fly without these checks.
Mike Busch's article in AOPA Pilot Magazine discusses the reliability of differential compression tests during annual inspections. He highlights inconsistencies in test results, suggesting caution before making decisions based solely on them. Personal experiences with a Cessna 195 illustrate these variations, emphasizing the need for context and further investigation in maintenance practices.
The author experienced high oil temperatures in their Cavalier aircraft after engine installation, initially measuring 205-220 degrees F. They replaced the oil cooler and constructed a shroud to improve airflow, reducing temperatures to 170-195 degrees F. Following an investigation, they confirmed the installation of a necessary Vernatherm, enhancing engine cooling performance.
The author experienced increased oil consumption in their Lycoming O-290D engine due to several issues, including a lack of an oil-air separator and a worn valve guide. Opting for a more reliable solution, they decided to replace the O-290 with a Lycoming O-320-A2B engine, which offers better parts availability and power.
From mid-May to August, significant work was done on a 1953 Cessna 170B following a concerning engine inspection. After evaluating options, it was decided to replace the original engine with a Lycoming O-360, enhancing performance. Despite increased weight and some initial issues, the owners are pleased with the outcome and eager to fly again.
October provided great flying conditions with warm weather and light winds. However, I faced engine issues that turned out to be lead-fouled spark plugs, resolved after maintenance. Additionally, I explored the concept of "elementary maintenance," clarifying tasks owners can perform on their aircraft without AME approval, underscoring aircraft owner responsibilities.
The author reflects on a vacation, highlighting their participation in the CRUFC 2010 Air Adventure Tour and subsequent work on aircraft maintenance. They faced engine oil temperature issues attributed to a plastic tub obstructing the air valve but eventually resolved the problem. The trip was ultimately successful and enjoyable, bolstered by modern technology like an iPhone.
The article discusses replacing O-rings in Zenair CH250 aircraft brake cylinders to eliminate oil leaks. It explains differences between aircraft and car brakes, outlines necessary repairs, and details the replacement process, including parts sourcing and bleeding techniques. The author emphasizes the importance of cleanliness and the specific tools required for the job.
The year ended with a memorable flying experience over the Kananaskis Valley during a visit from the author's parents. After a clear Boxing Day, the author and friends enjoyed a smooth flight, overcoming oil temperature regulation challenges with a new adjustable air intake for the engine. The joyful day concluded with successful flight procedures and exploration.
Calgary Recreational Flying Club YYC 