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Federal Aviation Administration

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Recent Regulations and Guidelines

View all Airworthiness Directives

Look Up N-Numbers

N-number format

An N-number can be in any of these formats

  • One to five digits (N12345)
  • One to four digits followed by one letter (N1234Z)
  • One to three digits followed by two letters (N123AZ)

N-numbers do not have

  • A zero (0) as the first number
  • The letters "I" or "O"

Drones/​Unmanned Aircraft Systems (UAS)

Check Airport Status and Delays

Browse Delays

  • DFW

    WEATHER / LOW CEILINGS

    Average delay 21 minutes

  • EWR

    WEATHER / WIND

    Average delay 57 minutes

  • SEA

    WEATHER / LOW VISIBILITY

    Average delay 1 hour and 40 minutes

Browse Delays

There are no airport closures at this time.

Browse Delays

  • HOU

    WEATHER / THUNDERSTORMS

    Ending 4:00 pm CDT.

Browse Delays

  • HOU

    OTHER:​Air Show

    16 minutes — 30 minutes

  • ORD

    VOL:​Multi-taxi

    16 minutes — 30 minutes

  • TEB

    VOL:​Multi-taxi

    31 minutes — 45 minutes

View all flight delay information

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This page was originally published at: https://www.faa.gov/index.cfm/apa/1079