We Help You Pass
Our free online study guide really works. You can study for your FAA private pilot ground school exam right now. For more info about the 4VFR.COM project, click here. You can find a daily update log here.
Live ATC Audio Streams
Tune into live air traffic control frequencies from North America. This feature requires Real player. Start listening to ATC now!
Reference Library
Our glossary lists and databases have grown quickly. I am working to create an on-line reference library to tie together all the loose ends. You can check out what is currently available in the library
FAA Practice Exam - New!
Introducing our newly enhanced practice exam. Now with figures!. Take a test a day for a week, and I guarantee you will do better on your exam. Get Started Now!
Show your support for 4VFR.COM - Link us. Bookmark us. Tell your mother about us. Press CTRL-D to bookmark this site now!. Check out one of our proposed T-Shirt Designs.
Feature Article: Service Difficulty Reports (SDRs)
SDRs are a mechanics’ report on maintenance problems.
These are collected by the FAA and aircraft manufacturer and passed
on to maintenance facilities as ADs (Airworthiness Directive)
or as a maintenance suggestion. SDRs make up about 10% of all
reported problems.
The most common items reported are those under the greatest
stress. Exhaust valves, crankshaft weights, and valve train problems
are most common. Cylinder reports relate to cracks at exhaust
port area. Magneto problems relate to failed coils. Certain engine
models are subject to specific reports related to inherent weakness
such as case cracking in Continentals. Lycoming has engines with
valve wobble problems. If ever you own an airplane, get an SDR
listing for it.
Last Modified April 24, ©2024 TAGE.COM
