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What Is a SPECI and When Is It Issued?

Pilot Institute

This information is vital for determining cloud ceilings, especially during landing approaches. When these happen, they’ll usually call for an instrument approach. This can get you in a lot of trouble, especially during approaches. 011955Z : The date and time of issuance (first day of the month at 19:55 UTC).

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What Are NOTAMs? Notices to Air Missions Explained

Pilot Institute

The start and end dates and times are coded in YYMMDDttt format (UTC time). B) 2106231700 is the start time and date in UTC. C) 2106232300 is the end time and date in UTC. These include changes made to instrument approaches, STARs, SIDs, and IFR airways. Is there a NOTAM for the approach you intend to use?

NOTAMs 52