COLD-, HOT WX OPS AND CONTAMINATED RUNWAYS

Question 1

What is the procedure after taking off with slush on the runway?

Answer 1

After retracting the flaps and clear of all obstacles, the Wing Anti-Ice should be selected ON to melt any accumulation of slush

Question 2

What can you do if Engine vibrations occur in icing conditions?

Answer 2

Decrease ONE thrust lever at a time to idle for 5 sec may assist in shedding the ice.
Advancing the thrust may also help if retarding doesn’t help

Question 3

What is the maximum fuel temperature?

Answer 3

+49 deg C

Question 4

What is the minimum Fuel temperature for take-off?

Answer 4

-40 deg C or 3 degrees above the fuel freezing point

Question 5

What is the fuel freezing point for Jet A and Jet A1?

Answer 5

C

Question 6

What temperature should be set as fuel freezing temp in the FMC?

Answer 6

3 deg C warmer than the fuels freezing temperature

Question 7

How is a non-recoverable stall indicated on descent due to icing?

Answer 7

High EGT with idle thrust

Question 8

What should be a consideration when taxing in to the gate after landing with lots of water and slush present?

Answer 8

Delay flap retraction as jackscrews are sensitive to icing

Question 9

What can be done to reduce brake/wheel temperatures in hot conditions?

Answer 9

Extend gear a bit earlier if doing multiple sectors for extra cooling.
Reduce brake applications during taxi

Question 10

How will the altimeter react on an ILS in very hot conditions?

Answer 10

When on the glideslope at the OM the altimeter may read lower than the published check altitude

Question 11

Define what a “Contaminated Runway” is

Answer 11

A runway with 25% of the runway surface area covered by water, slush or snow deeper than 3mm,

Question 12

Define what a “Wet Runway” is?

Answer 12

Sufficient water to make surface reflective and the depth is less then 3mm

Question 13

What are the take-off limits regarding cross wind?

Answer 13

On DRY or WET runways the limit is 20 kts

On CONTAMINATED runways the limit is 10 kts

Question 14

What are the landing limits, regarding cross wind, before FCOM3 needs to be consulted?

Answer 14

On DRY or WET runways the limit is 38 kts

On CONTAMINATED runways the limit is 15 kts

Question 15

How is braking action categorized?

Answer 15

Dry, Code 6, Mu >50
Good, Code 5, Mu 40 & above, Co-eff 95
Good to Medium, Code 4, Mu 39-36, Co-eff 94
Medium, Code 3, Mu 35-30, Co-eff 93
Medium to Poor, Code 2, Mu 29-26, Co-eff 92
Poor, Code 1, Mu 25-21, Co-eff 91

Question 16

What does RCAM stand for?

Answer 16

“Runway Condition Assessment Matrix”

Its a way to convert actual runway conditions into performance figures