alternates (pg 4)

Question 1

when do you need an alternate

Answer 1

a destination alternate is always required UNLESS

• an instrument approach is published and available for the destination
  AND
• for at least 1 hour before and 1 hour after ETA
  
  • ceiling will be at least 2000’ above airport elevation
  • visibility at least 3 sm

Question 2

what are the weather minimums required at an airport to list it as an alternate

Answer 2

use the alternate minima published in the procedure charts

IF NONE:
precision approach
- 600’ ceiling & 2 sm visibility

non precision approach
- 800’ ceiling & 2 sm visibility

no instrument approach available at alternate
- ceiling & visibility must allow descent from minimum enroute altitude (MEA) approach & landing under VFR

Question 3

what about no instrument approach available at alternate

Answer 3

ceiling & visibility must allow descent from minimum enroute altitude (MEA) approach & landing under VFR

Question 4

filing an alternate - gps considerations ( 3 types)

Answer 4

1. equipped with non-WAAS gps
2. WAAS withOUT baro-VNAV
3. WAAS WITH baro-VNAV

Question 5

what’s the first type of filing an alternate - gps considerations

Answer 5

1. equipped with a non-WAAS gps

flight plan can be based on a gps approach at EITHER the destination OR alternate, NOT BOTH

Question 6

what’s the second type of filing an alternate - gps considerations

Answer 6

2. WAAS withOUT baro-VNAV

flight plan may be filed based off LNAV (lateral navigation) or CIRCLING MINIMA at ALTERNATE (regardless of the available approaches at the destination)

Question 7

what’s the third type of filing an alternate - gps considerations

Answer 7

3. WAAS with baro-VNAV

LNAV/VNAV ( lateral & vertical navigation) or RNP 0.3 are allowed as basis for the flight plans ALTERNATE ( requires Special Authorization and RNP availability )