Mins (RA)

Question 1

Takeoff Mins

Answer 1

C056; Page 5-89 (Standard)
•Standard is 1SM/RVR5000 Visibility
•Use published if greater.
•Touchdown RVR is controlling

C078; Page 5-119 (Lower than Standard Takeoff Mins)
•>=RVR1600: TDZ RVR is controlling, then mid
•<rvr1600: all rvr are controlling two must be fe></rvr1600:> •RVR1600: RVV 1/4SM (Runway Visibility Value)
•RVR1200 TDZ / 1200 MID / 1000 RO: RCLM (day only) or HIRL or CL lights
•RVR1000 TDZ / 1000 MID / 1000 RO: RCLM and HIRL, or CL lights
•RVR600 TDZ / 600 MID / 600 RO: HIRL and CL Lights

Question 2

When is an alternate required?

Answer 2

Plus/Minus 1hr, 2000ft, 3SM

Question 3

Derived Minimums?

Answer 3

C055 in FOM; Page 5-87
•For airports with 1 usable navaid, Add 400ft & 1SM
•For airports with 2 usable navaids to different suitable runways, add 200 ft to the higher DA/MDA and 1/2SM to the higher visibility.

Question 4

When do we need a 2nd alternate?

Answer 4

When any part of the METAR or TAF at the destination indicate conditions less than normally authorized (i.e. when using 3585).

Question 5

Exemption 3585

Answer 5

• FOM 6-11
• Allows dispatch when only conditional weather (PROB, TEMPO) indicates conditions lower than minimums.
• 2nd Alternate required when ANY part of the METAR or TAF at the destination indicate conditions less than normally authorized.
• Requirements for Destination, 1st Alt, & 2nd Alt do not need to consider conditional wording:
  
  • Destination must not have Visibility less than 1/2 lowest min.
  • 1st Alternate must not have Visibility or Ceiling less than 1/2 the OpSpec values.
  • 2nd Alternate must have Vis & Ceiling at or above OpSpec values.
• Fuel to destination, furthest alternate and land, plus 45 minutes cruise.