Chapter 22 - Reporting and Forecasting Flashcards
What information does a SIGMET provide?
Significant weather information concerning the safety of all aircraft.
What information does an AIRMET provide?
Airmens weather information that is a concise description of weather phenominon that are occuring or may occur along a low level route (<fl100>
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What are the characteristics of a SIGMET?
Issued by a Met Watch Office (MWO)
Abbreviated plain language
Valid for 4 hours, or 6 hours for hurricans
Warnings relevant for all aircraft in the area.
May involve T/S; Hail; FZRA; Sev turbulence; Sev Iceing; SS; VA; Sev MTW.
No midnight time is used.
What is the rols of an MWO?
Maintain watch over met conditions
Prepare SIGMETs
Supply SIGMETs & other info related to it’s area
Disseminate SIGMETs
Supply pre eruption volcanic activity for SIGMETs not already issued
Supply info regarding radioactive materal in atmosphere
What are the characteristics of an AIRMET?
Routinely issued for 6 hour periods.
Abbreviated plain language
They report or forecast low level weather
They describe the same conditions as F214 & F215 significant weather charts
What are the characteristics of a VOLMET?
Certain stations continuously transmit weather for major airfields
Air information publication and flight guides list stations, their frequency & air stations included.
They provide information for aircraft in flight.
Can be in the form of D-VOLMET and VOLMET broadcast (and scheduled VOLMET broadcasts)
What information is included in a D-VOLMET?
METARs, SPECIs, TAFs, SIGMETs, information not covered by a SIGMET and AIRMETS, wheere available.
What information is included in a VOLMET broadcast?
METARs & SPECIs
What information is included in a scheduled VOLMET broadcast?
METARs, SPECIs TAFs & SIGMETs
What frequency would you find a continuous VOLMET broadcast on?
VHF
What frequency would you find a scheduled VOLMET broadcast on?
HF
What are 2 types of AIRMETS?
SNOWTAMs & ASHTAMs
What is a SNOWTAM?
Information on conditions at airfrield when snow, slush or ice are present.
What is an ASHTAM?
Information on the activity of a volcano and ash clouds.
What is ACARS?
Aircraft Communication Address & Report System.
Digital datalink system for tensmission of small messages between aircraft & ground stations via radio (VHF - limited by LOS) or satellite (expensive).
What is the structure of a runway state code?
RR T E DD BB
RR - runway designator
T - Type of deposit
E - extent of contamination
DD - depth of deposit
BB - Braking conditions
