• Skip to main content
  • Skip to primary sidebar
  • Home
  • Contact

Golf Hotel Whiskey

Golf Hotel Whiskey: for pilots and aviation enthusiasts

Acronyms to help remember aviation compass errors

Aviation compass errors can easily confuse a new pilot while flying. Hence, Jason Schappert has created a short video with two acronyms to help pilots remember what type of compass errors they can expect to face in the cockpit.

The first acronym that Jason mentioned was ANDS:

  • Accelerate
  • North
  • Decelerate
  • South

In other words and when you are in the Northern hemisphere heading on an easterly or a westerly heading, your aircraft will have a tendency to dip to the north when you accelerate and dip to the south when you decelerate.

In addition, Jason also mentioned a second acronym called UNOS:

  • Undershoot
  • North
  • Overshoot
  • South

In other words and when you are in the Northern hemisphere heading on an northern or a southern heading, you have to either undershoot or overshoot your heading. Keeping the above acronyms in mind will go a long way towards aiding navigation while flying.

Reader Interactions

Comments

  1. mark says

    April 29, 2010 at 01:18

    I use UNOS and ONUS depending where in the world I'm flying. I prefer to keep the acronynms similar.

    An easy way to remember which acronym applies to which hemisphere is to think . . . 'the ONUS is on the southerns to use it there'. By deduction, we use UNOS in the northern hemipshere.

    Reply
  2. Julien says

    April 30, 2010 at 01:51

    … and similarly we use SAND in the Southern Hemisphere.

    Reply
  3. Geo says

    March 4, 2021 at 22:32

    We always used UNOS but the ONOS is helpful too. thanks!

    Reply
  4. F.M. says

    August 24, 2022 at 06:34

    Learning to fly myself but keeping UNOS quiet as in Czech it means Kidnap or Hijack :))))))) LOL

    Reply

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Primary Sidebar

Matthew Stibbe
Matthew Stibbe is CEO of Articulate Marketing and Turbine, the easy, online way to deal with office paperwork. He has an FAA CPL/IR and an EASA PPL/IR and sometimes flies a Cirrus SR-22. He also writes about wine at Vincarta and being a better manager at Geek Boss.
Bureaucracy must die eBook
Subscribe via RSS

Recent Posts

  • IATA Airport Abbreviations
  • Upcoming Concorde and Apollo documentaries
  • Lie Back And Think Of England: London To Austin On BA’s New 787 Dreamliner
  • Video: Parachuting from the edge of space
  • Hilarious preflight safety video for GA aircraft
  • San Francisco Airport at night – beautiful time lapse video
  • A practical jetpack (finally) takes off
  • A man in a hot air balloon realises he is lost
  • Pegasus House: The former HQ of the Bristol Aeroplane Company is restored
  • Vintage British aviation posters from the 1920-1930s

Copyright © 2023 Golf Hotel Whiskey. All rights reserved.