World Library  
Flag as Inappropriate
Email this Article


Article Id: WHEBN0012385497
Reproduction Date:

Title: Owls  
Author: World Heritage Encyclopedia
Language: English
Subject: List of nocturnal birds, BLITTS, Florida Atlantic Owls, Nocturnality, Tosohatchee Wildlife Management Area
Collection: Aviation Mnemonics
Publisher: World Heritage Encyclopedia


For the Harry Potter scenario fictional examinations, see Hogwarts#Grading and assessment. For the birds see owl.

OWLS is a mnemonic used by general aviation airplane pilots to assess an unprepared surface for a precautionary landing.[1]

Like all mnemonics this check has become part of aviation culture and folklore.


  • Obstacles
  • Wind direction
  • Length of surface
  • Surface condition and type


  1. ^ a b Kaiser, John W.: How to Fly Book - Cessna 150, page 37. Victoria Flying Club, 1977.
This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.

Copyright © World Library Foundation. All rights reserved. eBooks from Project Gutenberg are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.