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Takeoff Minimums

Introduction:

  • Takeoff minimums are a regulatory piece of safety
Takeoff Minimums Example
Takeoff Minimums Example

Civil:

  • Part 121, 125, 129, and 135 operators must follow their requirements:
    • Must meet the requirements of part 97, or if none are prescribed:
      • For aircraft, other than helicopters, having 2 engines or less - 1 SM visibility
      • For aircraft having more than two engines, 1/2 SM visibility
      • For helicopters, 1/2 SM visibility
      • No pilot may takeoff under IFR from a civil airport having a published obstacle departure under part 97 for the takeoff runway to be used, unless the pilot uses such ODPs or an alternative is assigned
  • An inverted triangle with a capital letter "T" means a textual departure is located in the front of the IAPs indicates an ODP developed solely for obstacle avoidance [Figure 2]
    • Review these before departure!
  • If the pilot does not possess a DP or does not wish to use one, he/she is expected to advise ATC
  • This may be accomplished by stating "NO DP" in the remarks section of the flight plan or by verbally advising ATC

ODP Takeoff Minimums
ODP Takeoff Minimums
ODP Takeoff Minimums
ODP Takeoff Minimums

Military:

  • Shall comply with the IAPs and the takeoff and landing minimum prescribed by the military authority having jurisdiction of that airport
    • This applies to the landing runway in use
    • If at the hold short use the runway remaining boards for a real time assessment

  • Standard Instrument Rating:
    • Published non-precision minimums, no lower than 300-1
    • Published precision minimums, no lower than 200-1/2 or 2400 RVR
  • Special Instrument Rating
    • Pilot judgment and urgency of flight
    • No visibility or ceiling requirements

NOTE:
Only an aircraft commander with a special instrument rating, who is also on the flight controls, is authorized to make departures from an airfield when weather conditions are below minimum

  • Formation:
    • Independent of instrument ratings
    • Published circling minimums
      • If circling approach not authorized for runway in use, formation takeoff minimums revert to basic VFR of 1000-3
      • Only takeoff minimum that is also the same requirement to shoot the approach
    • Restricted to two aircraft of "similar" performance

References: