COLD, HOT WX OPS AND CONTAMINATED RWY Flashcards
What is the fuel freezing point for Jet A and Jet A1?
JET A is -40
JET A1 is -47
How is a non-recoverable stall indicated on descent due to icing?
High EGT with idle thrust
What should be a consideration when taxing in to the gate after landing with lots of water and slush present?
Delay flap retraction as jackscrews are sensitive to icing
What can be done to reduce brake/wheel temperatures in hot conditions?
Extend gear a bit earlier if doing multiple sectors for extra cooling.
Reduce brake applications during taxi
How will the altimeter react on an ILS in very hot conditions?
When on the glideslope at the OM the altimeter may read lower than the published check altitude
Define what a “Contaminated Runway” is?
A runway with 25% of the runway surface area covered by water, slush or snow deeper than 3mm
Define what a “Wet Runway” is?
Sufficient water to make surface reflective and the depth is less then 3mm
How is braking action categorized?
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
What does RCAM stand for?
“Runway Condition Assessment Matrix”
With loss of electrical power, in which position do the wing anti ice valves fail?
Engines: OPEN
Wings: CLSD
Which slats are heated by hot air from the pneumatic system?
Slats 3-4-5
With engine anti-ice ON, is your descent affected?
Yes, because idle thrust is increased
Can you use the APU bleed for wing anti-ice?
No
What happens if you turn the wing anti-ice switch on, on the ground?
The wing anti-icing valves will open for a 30 second test
From which compressor stage is bleed air extracted for Engine Anti ice?
HP section
Are TAT probes heated on the ground?
No
Are the pitot probes heated on the ground?
Yes, but at a lower level compared to when airborne
When will pitot probes be heated automatically?
Once 1 engine is started
What types of de-icing fluid is being used by HK Express?
Type I, II and IV
What is the color of the different types of de-icing fluid being used by HK Express?
OCE
Orange (Type I)
Clear (Type II)
Emerald Green (Type IV)
What does RCAM stand for?
“Runway Condition Assessment Matrix”
Can you use a derated take off on contaminated runways?
Yes
Can you use FLEX on contaminated runways?
No
What is the maximum taxi speed on contaminated runways?
10 kts
What reverser setting is to be used on contaminated runways?
Max reverse
Can we use Idle Reverse Thrust on Wet or Contaminated runways?
Not recommended by Airbus
What is the requirement to be met if you want to use Idle Reverse on a wet or contaminated runway?
The LDA have to exceed the unfactored LD without reverse for braking action Medium-Poor
FCTM PR-NP-SOP-160
What happens to the descent path with ANTI ICE ON, and how can we compensate for that to maintain our desired path?
It reduces the descent path angle
We can increase speed to compensate
Define “Icing Conditions” when on the ground
OAT/SAT 10 deg C or below with visible moisture
Define “Visible moisture” when it come to determine if we have icing condition or not
Visible moisture with visibility of 1600 m or less
Taxiways etc have snow, standing water or slush
Define “Icing Conditions” when in the air?
When TAT is 10 deg or below with visible moisture
What is the definition of “Severe Ice Accretion”?
5 mm ice layer
When should rain repellant be used?
Only for Moderate to Heavy rain
What AUTOBRAKE setting is to be used on contaminated runways?
MEDIUM
Can RVR be used when determining visibility for holdover times for de-icing?
No
What is the highest value of Dry Snow that FS+ can use for calculations?
100mm
What is the highest value of Standing water that FS+ can use for calculations?
13mm
Does de-icing fluids used on ground have any protection once we are airborne?
No
By how much, laterally, shall we avoid TS in the terminal area?
By min 3 mn
