Weather

Question 1

Lowest Takeoff Minimums Possible

Answer 1

500-500-500

Question 2

Low Visibility Takeoff Definition

Answer 2

Less than 1/4 mile or 1600RVR

Question 3

What are special considerations with a low visibility takeoff:

Answer 3

1. Captain Only Takeoff

2. Requires 2 RVR, but if you have 3, all are controlling

Question 4

Where would we find if we need higher takeoff minimums?

Answer 4

10-9(a)

Question 5

What triggers a takeoff alternate for PSA?

Answer 5

If you can’t get back in on a CAT I Approach (VIS ONLY)

Question 6

What are the requirements for a takeoff alternate

Answer 6

1. Be within 300nm (company)

2. 1 hour, still air, normal cruise, single-engine (Regulation)

Question 7

Category I lowest visibility

Answer 7

1800RVR

Question 8

How many RVRs need to be working for a CAT I ILS approach?

Answer 8

1 Working - TDZ

2 Advisory

Mid can substitute for TDZ

Question 9

What is definition of low visibility approach?

Answer 9

4,000RVR or 3/4 of a mile

Question 10

What are some considerations when flying a low visibility approach?

Answer 10

If the autopilot fails, and your FD fails below these minimums, you should go around.

Question 11

How many RVR are required for a CAT II approach?

Answer 11

Requires 2 RVR Need Touchdown and Rollout, if rollout fails, mid or far can substitute

Question 12

On a CAT I approach, if the TDZ RVR is INOP, can you fly an 1800RVR minima?

Answer 12

No, unless an operating MID RVR can be used as a substitute for the TDZ

Question 13

Marginal Rule

Answer 13

A second alternate is required:

When at the ETA, the reported or forecast ceiling at the DESTINATION equals the published HAT or HAA minimum OR the reported or forecast visibility equals the published requirements of the approach AND the FIRST ALTERNATE’S ceiling OR visibility equals derived values.

Question 14

Exemption 17347

Answer 14

Allows dispatch with a conditional statement (TEMPO, BECMG, or PROB) that are below minimums provided:

1. At destination, VISIBILITY ONLY may be as low as 1/2 of CAT 1 minimum
2. At first destination alternate: conditional CEILING and VISIBILITY may be as low as 1/2 of derived minimums
3. TAF’s main body needs to meet the destination’s CAT 1 visibility and first alternate’s derived ceiling and visibility.
4. A SECOND ALTERNATE IS REQUIRED and must meet derived minimums.

Question 15

Does Exemption 17347 apply to CAT II operations?

Answer 15

NO

Question 16

When is a destination alternate required?

Answer 16

1. Always… but in order to not need an alternate:

1-2-3 rule:

1 hour before to 1 hour after your ETA, weather reports/forecasts, or any combination thereof, must indicate minimum 2,000’ ceiling, 3 SM visibility.

2. Always required if destination only has RNAV approaches, alternate must have conventional approaches.
3. If destination alternate is required, it must meet derived minimums.

Question 17

Can CAT II approaches be considered when calculating derived minimums?

Answer 17

Nope.

Question 18

When are we legal to takeoff?

Answer 18

1. Weather meets or exceeds takeoff minimums in Jeppesen 10-9a
2. All available RVR are controlling, 2 required
3. Far end RVR only advisory, can’t substitute.

Question 19

When is a takeoff alternate require?

Answer 19

If current RVR/visibility at departure airport is below CAT I minimum

1. Cannot consider CAT II approaches
2. Gusts not limiting, unless braking action less than good or visibility less than 3/4sm or 4,000 RVR
3. Need to compare current RVR at departure with lowest available and suitable CAT I approach.

Question 20

Low Visibility Taxi: ?

Low Visibility Takeoff: ?

Low Visibility Approach: ?

What are some specials in each circumstance?

Answer 20

Low Visibility Taxi: 1,200RVR

1. SMGCS (surface movement guidance and control system).
2. Low Vis taxi charts used.

Low Visibility Takeoff: 1,600RVR 1/4SM

1. Captain must conduct

Low Visibility Approach: 4,000RVR 3/4SM

1. Gusts become limiting
2. <100 hour first officer NA (even for takeoff)
3. CAT II approach briefing is required

Question 21

Gusts become limiting when ________.

Answer 21

1. CC less than or equal to 4
2. Evaluating an alternate
3. < 3/4SM or 4,000 RVR (including CAT II).

Question 22

When is the weather legal for dispatch?

Answer 22

1. At destination ETA, weather reports/forecasts must show weather AT OR ABOVE landing minimums
2. Considering visibility only
3. Only runways of suitable length/width and wind
4. Destination gusts not limiting for dispatch purposes
5. Can consider CAT II approaches (only time)

Question 23

When standard takeoff minimums or greater are used the _________ is controlling.

Answer 23

TDZ RVR