weather minimum


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weather minimum

[′weth·ər ‚min·ə·məm]
(meteorology)
The worst weather conditions under which aviation operations may be conducted under either visual or instrument flight rules; usually prescribed by directives and standing operating procedures in terms of minimum ceiling, visibility, or specific hazards to flight.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

weather minimum

The worst weather conditions in terms of visibility, RVR (runway visual range), and cloud ceiling for landing at a given runway or landing field either under conditions of visual flying or of instrument flying. These conditions are prescribed by directives and standing operating procedures in terms of minimum ceiling, visibility, RVR, or specified hazards to flight. The appropriate regulatory authority (e.g., FAA) lays down these conditions. The operator may lay down additional restrictions over and above those laid down by the authority. Also called weather minima.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved
References in periodicals archive ?
An experienced fighter pilot was attempting a night precision approach at his weather minimums in an F-16.
We tend to soft pedal general aviation's hazards, and emphasize the regulatory weather minimums. In my opinion, operating VFR away from the airport under conditions of 1000-foot ceilings and three miles visibility is hazardous for most pilots most of the time.
Weather minimums, degraded ASE (automatic stabilization equipment) and flight-minimums SOPs can be waived with battle-captain approval.
A combination of better instrumentation, better approach aids, and strict adherence to weather minimums would make it easier for today's pilots to make the call not to fly.
Let's stop right here and ask the question, "With the weather minimums continuing to drop, just how far along an approach can we wave an aircraft without a paddles contact?"
That's one reason the selection of an alternate and the weather minimums required rank high in the authorized deviations from the FARs provided by Op Specs.
Through our troubleshooting of the INS, mental calculations of the decreasing weather minimums and listening to approach bark at us, the concept that the NAVAID and the field were not colocated completely dropped from my scan.
Special VFR weather minimums for fixed wing aircraft are reduced to a mere one mile of flight visibility and the straightforward requirement to remain clear of clouds when operating within Class B, C, or D surface areas.
Personal minimums, of course, generally are a set of conditions--not unlike the basic VFR weather minimums or the ceiling and visibility requirements for an instrument approach, but also involving other operational considerations--beyond which a pilot vows not to fly.
What would be your required weather minimums at your alternate if you were flying a helicopter instead of an airplane?

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