Home About ATC Exam Library Kudos Contact
menu


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.

.
.||||||.
exams to date

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 December 17, ©2018 TAGE.COM

Related Links
Featured Articles
  • Instruction use of MS Flight Simulator
  • Wind and Groundspeed
  • Night Flight (Discussion)
  • Pre-start/Start Checklist
  • Start/Post Start
  • Pitot Tube Inventor
  • Aircraft Preflight
  • Selecting Your Instructor
  • When A Pilot Dies
  • Taildraggers
  • Runup
  • Why Accidents Happen
  • Reaction and Anticipation
  • Teaching Memory
  • Teaching Efficiency

    More Flight Training Articles...

  • Student Kudos
    "Thanx for your exam section. I got 100% for my private written exam today at 25-Feb-2002. Thanx"
    - NC Kwan

    Powered By: TAGE.COM HOME | BUG REPORT | CONTACT