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 Taken
268
Feature Article: Wifferdill
I'm told that "wolferdale" is an aviation (perhaps
military aviation) term meaning a 270 turn. Is this correct?
Lee Whitt
Lee,
Never heard of the term. Would appreciate any verified use of
term for my oddities file. I'll shoot it into the newsgroups
for a check.
"Michael A. Pilla" <mpilla@mitre.org>
Subject: Re: wolferdale
Gene, You're probably referring to "Wifferdill" or
"Whiferdill"; I've seen both spellings. It is the English
term for either an Immelman turn or a Chandelle turn, IIRC.I.e.,
a one-half loop followed by a roll at the top (180o) for the
Immelman and a sharp pull up, rolling, maximum performance turn
(also 180o) for the Chandelle. I wish I had my flight maneuver
manuals with me; could give you the precise definition.
Michael Pilla
Could it be "whifferdill"? I used to fly with an
ex-usaf cfi, and he used that term to describe any of several
"playing-around" maneuvers (wing-overs, steep turns,
etc.)
Last Modified October 27, ©2026 TAGE.COM