ANN's Daily Aero-Tips (07.26.06): Low IFR To Clear Skies | Aero-News Network
Aero-News Network
RSS icon RSS feed
podcast icon MP3 podcast
Subscribe Aero-News e-mail Newsletter Subscribe

Airborne Unlimited -- Recent Daily Episodes

Episode Date

AMA Drone Report

Airborne-Monday

Airborne-Tuesday

Airborne-Wednesday

Airborne-Thursday

Airborne-Friday

Airborne On ANN

ADR 02.20.17

Airborne 02.20.17

Airborne 02.21.17

Airborne 02.15.17

Airborne 02.16.17

Airborne 02.17.17

Airborne-HD On YouTube

ADR 02.20.17

Airborne 02.20.17

Airborne 02.21.17

Airborne 02.15.17

Airborne 02.16.17

Airborne 02.17.17

Wed, Jul 26, 2006

ANN's Daily Aero-Tips (07.26.06): Low IFR To Clear Skies

Aero-Tips!

A good pilot is always learning -- how many times have you heard this old standard throughout your flying career? There is no truer statement in all of flying (well, with the possible exception of "there are no old, bold pilots.")

Aero-News has called upon the expertise of Thomas P. Turner, master CFI and all-around-good-guy, to bring our readers -- and us -- daily tips to improve our skills as aviators. Some of them, you may have heard before... but for each of us, there will also be something we might never have considered before, or something that didn't "stick" the way it should have the first time we memorized it for the practical test.

Look for our daily Aero-Tips segments, coming each day to you through the Aero-News Network.

Aero-Tips 07.26.06

We bat around several terms about flight visibility and ceiling, but sometimes it becomes apparent that they are not completely understood. Let's take a minute to make sure we're all on the same page with in-flight definitions.

  • VFR (Visual Flight Riles, or more correctly, VMC, for Visual Meteorological Conditions) means:
    • Visibility is five statute miles or greater and
    • The base of any cloud ceiling is 3000 feet above ground level (AGL) or higher
  • MVFR (for Marginal VFR) means either or both:
    • Visibility is between three and five miles and/or
    • The cloud ceiling is 1000 to 3000 feet AGL
  • IFR (Instrument Flight Rules, more correctly IMC, for Instrument Meteorological Conditions) means either or both:
    • Visibility is between one and three miles and/or
    • The ceiling is between 500 and 1000 feet AGL
  • LIFR (Low IFR) means either or both:
    • Visibility is less than one mile and/or
    • The ceiling is less than 500 feet AGL

(Above is a significant weather plot from the Aviation Weather Center. LIFR reporting points are pink, IFR are red, MVFR are blue, and VFR reporting points are not plotted.)

The terms "MVFR" and "LIFR" are not used in all aviation weather products, so often there is no distinguishing between "VMC" that has 1.1 mile visibility and 100 miles, or that has no ceiling or a 1001-foot ceiling. "IFR" could be zero-zero (no visibility, surface obscured) or it could be one miles visibility in morning haze with clear skies, or it could be a 999-foot ceiling with 200 miles visibility.

Note: even moderate thunderstorms don't always reduce ceiling and visibility below the "VMC" level... so visibility or ceiling alone are not the sole determinants of "good flying weather".

Aero-tip of the day: Use visibility and ceiling reports as the beginning, not the end, of a larger weather investigation.

FMI: Aero-Tips

Advertisement

More News

Klyde Morris (02.20.17)

Klyde's Still On SpaceX's Case... As Usual FMI: www.klydemorris.com>[...]

SpaceX Falcon 9 Back In ISS Delivery Biz

Eighth Successful First Stage Landing/Recovery Looked Almost Easy... They're back in the ISS delivery business as a SpaceX Falcon 9 rocket lifted off at 9:39 a.m. EST, Sunday. Abou>[...]

Napa Jet Center (KAPC) To Offer Expanded Maintenance Services

Textron Aviation Selects Napa Jet Center For Maintenance Of Bonanza/Baron Series Napa Jet Center (KAPC) has been selected by Textron Aviation to add the Beechcraft Authorized Servi>[...]

Aero-News: Quote of the Day (02.20.17)

“One of the main uses for the UAS will be for high-risk situations such as someone barricaded in a home or building. The UAS will allow us to get a bird’s-eye view and >[...]

Moore County, NC SheriffÂ’s Office Purchases UAS

Will Be Employed For A Variety Of Law Enforcement Operations Sheriff Neil Godfrey announced today that the Moore County Sheriff’s Office has purchased an Unmanned Aircraft Sy>[...]

blog comments powered by Disqus



Advertisement

Advertisement

Podcasts

Advertisement

© 2007 - 2017 Web Development & Design by Pauli Systems, LC