Understanding MEAR and TAF for Pilots

May 23, 2025

FAA Remote Pilot Study Guide 2025 - Part 10 of 12

Key Topics

  • Differences between MEAR and TAF reports
  • Issuance and validity of reports
  • Purpose and decoding of reports

MEAR vs TAF Reports

MEAR (Meteorological Aerodrome Report)

  • Type: Real-time current weather report
  • Issued: Every hour or every 55 minutes past the hour
  • Validity: 1 hour
  • Purpose: Immediate flight planning, real-time weather snapshot
  • Special Reports: Speci report for significant weather changes impacting safety

TAF (Terminal Aerodrome Forecast)

  • Type: Forecasted prediction of future weather
  • Issued: Four times per day (00 Z, 06 Z, 12 Z, and 18 Z)
  • Validity: 24 to 30 hours
  • Purpose: Long-term flight planning

Understanding Zulu Time

  • Zulu Time (UTC): Universal time standard in aviation
  • Usage: Consistent global reference, unaffected by local time zones or daylight savings

Purpose of MEAR and TAF Reports

  • MEAR: Used for immediate weather conditions and flight safety checks before departure
  • TAF: Used for planning weather conditions around an airport for future flight operations

Decoding a TAF Report

  • TAF: Terminal Aerodrome Forecast identifier
  • AO Code: Airport identifier (e.g., JFK for New York)
  • Date and Time: First two numbers represent the day, followed by time in Zulu
  • Validity Period: Represented by sequences like 12/12 or 12/18
  • Wind Direction and Speed: Indicates where wind is coming from and its speed in knots
  • Visibility: P6SM indicates visibility greater than six statute miles
  • Clouds: BKN indicates broken clouds, with altitude represented by adding two zeros to the end (e.g., 040 = 4000 ft AGL)
  • FM (From): Indicates a change from a specific time forward

Additional Notes

  • AGL vs MSL: AGL used for ground-based reports; not MSL since it’s ground-reference
  • Standardization: Consistent use of Zulu time even if 'Z' is omitted

Conclusion

  • Understanding and decoding reports: Essential for FAA part 107 exam
  • Next Steps: Continue watching upcoming parts for comprehensive exam preparation

Additional Resources

  • Comments and questions can be addressed by the presenter
  • Thank you notes to viewers and donors for supporting content creation

Upcoming Parts

  • Part 11/12 will explore further details on remote pilot certification
  • Stay updated for new exam variations and study insights