Wx Planning Domestic, Flag, Supplemental

Question 1

When is an Alternate airport required for departure

Alt Airport must be _______

Can CAT 2/3 min be used at the Alt

Airport must be within _______

Answer 1

• 121.617
• When the wx at takeoff is below the landing minimums for the aircraft and/or crew
• Alt Airport must be listed on flight release

o OEI CAT 2/3 minimums can be used with the appropriate OpSpec

o 2 engines: within 1 hour at OEI cruise speed in still air
o 3 or more engines: within 2 hour at OEI cruise speed in still air

Question 2

When is a destination alternate required for DOMESTIC ops

Alt must be __________

Answer 2

• 121.619
• 1 hour before to 1 hour after: Ceiling less than 2,000’ or vis is less than 3sm
• Alt airport must be listed on flight release

Question 3

When is 2nd Destination alternate required

Alt.s must be ________

Answer 3

• 121.619

o When weather and destination and alternate are marginal for domestic ops
• Marginal is defined by operator
- Rule 3585 for Domestic ops
- CAT 2/3 Wx minimums applied at destination or destination alternate
- if approved

• Alts must be listed on flight release

Question 4

Explain Rule 3585

Answer 4

• 2 destination alternates are required for domestic ops when:
  o Destination - 1 hour before to 1 hour after if wx is below min, not less than ½ of min.s due to a conditional phrase(BCMG, PROB, TEMPO)
  o 1st Alt – at ETA wx can be below planning min, not less than ½, due to conditional phrase
  • 2nd Alt – not less than Planning min at ETA

Question 5

When is a destination alternate required for FLAG ops

Alt must be _______

Flights with no Alternates

Answer 5

• 121.621
• Alt airport must be listed on flight release
• Flight is more than 6 hours, requires an alternate
• Flights is less than 6 hours, requires an alternate when:
  o 1 hour before to 1 hour after ETA the wx at the destination is:
  • less than 1,500’ above lowest circling MDA
  • if required and authorized
  • less than 1,500’ above lowest DA or 2,000’ AFE(whichever is greater)
  • Vis is less than 3sm or 2sm more than the lowest minimums (whichever is greater)
• Flights with NO alternate airport
  o 121.645(c)
  • Fly for 2 hours at normal cruise consumption considering wind and weather conditions

Question 6

When is a destination alternate required for Supplemental ops

Alt must be __________

Flights with no Alternates

Answer 6

• 121.623
• Alt airport must be listed on flight release
• Destination alternate is required within the 48 contiguous states
• Destination Alternate is required UNLESS:
  o The destination is outside of the 48 contiguous states on a route without an available destination alternate
  • FAR 121.645
  • Standard Fuel for supplemental ops +
  • Fuel to fly for 2 hours at normal cruise consumption considering wind and weather conditions

Question 7

The weather at the Takeoff or destination Alternate must be

Wind Must be ______

GPS approaches are considered _______

An Airport with 2 navaids can be considered as _________

CAT 2/3 Alt Min

Answer 7

• Weather at ETA is at least:
  o OpSpec C055
  o Wind and gust must be within limitations
  • 1 navaid: + 400’ and 1sm, (5000) (1600m)
  - CAT 1 or Non P straight in
  • 2 navaids: + 200’ and 1/2sm, (2400)(800m) added to the higher of the 2
  • Same runway with an approach to each side
  o Rwy 09 ILS/27 ILS: 2 operational facilities

o GPS approaches are considered as 1 navaid

• An airport with 2 navaids can be considered as only 1 if derived minimums for 2 navaids is more restrictive

•	Cat 2 and at least 2 navaids
•	300’ + 3/4sm (1200m), (4000 RVR) 
•	Cat 3 and at least 2 navaids
•	200’ + 1/2sm(800m), (2400 RVR)
o	can be reduced to 700m

Question 8

ETOPS suitable airport

How to calculate useable times

Wind must be ______

GPS Approaches are considered ______

CAT 2/3 Min.s

WY Min.s

Answer 8

• 121.624
• From the earliest time of arrival to the latest time of arrival a safe landing can be made and the weather is:
  o 1 approach/navaid - Cat 1 ILS or straight in Non P
  • +400’ + 1sm(5000’) or 1600m
  o 2 approaches/navaids to different runways
  • +200’ + 1/2sm(2,400’) or 800m added to the higher of the 2
  • Same runway with an approach to each side
  o Rwy 09 ILS/27 ILS: 2 operational facilities

o Earliest time: From ETP to Alt at normal cruise speed and level
o Latest time: From ETP to Alt at LRC at 10,000’ or MORA

• Planning Wx(Recommended based on FAA AC120-42B)
  o C055
  o Wind and gust must be within limitations

o GPS approaches are considered as 1 navaid

o	Cat 2 and at least 2 navaids
•	300’ + 3/4sm (1200m), (4000 RVR) (1200m)
o	Cat 3 and at least 2 navaids
•	200’ + 1/2sm(800m), (2400 RVR)
o	WY
•	Precision
•	200’ + 800m
•	Non P 
•	400’ + 1500m

Question 9

Airplane landing calculation at destination and alternate airport

How is the runway selected

Answer 9

• (FAR 121.95)Airplane must be able to be brought to a full stop within 60% of the effective length of a dry runway from a point 50’ above the runway. If the runway is wet or slippery the AFM landing distance is increased by 115%
  o Dry landing distance x 1.67 < Runway Available
  o Wet landing distance x 1.92 < Runway Available
  • Most favorable runway and direction
  • Most suitable based on the probable wind, landing aids, and terrain