Cold Wx Ops Flashcards
If Runway Data message shows ANTI-ICE OFF but anti-ice ON is required, what should you do?
Decrease ASSMD TMP by 5 knots and use the V-speeds for ANTI-ICE OFF
Takeoff Module “319/320 Sabre Flight Planning System Review”
Is the wing anti-ice used primarily for de-icing (after some accumulation) or anti-icing (to prevent ice accretion)?
When can wing A-ICE be used?
Can APU BLEED be used for wing anti-ice?
FM 5.10.10 Supplementary Procedures - Adverse Weather Operations
FM 2.20.22 Non-normals Air Systems
Used to prevent ice accretion
Must be used if indication of ice accretion on the visual indication or other surfaces
Wing anti-ice can be used after first power reduction on takeoff
No, APU BLEED must not be used for wing anti-ice
Where can METAR codes be found?
Takeoff “Deice/Anti-ice Winter Operations”
- FOM QRG
- FOM Ch. 7 - Adverse Weather
- Winter Operations ACARS User Guide
ACARS code for HOT
ACARS MISC “AH”
- used in cases where U-EHot app or cellular/WiFi is not available
When is precipitation or dry acumulation considered non-adhering?
What is should you take into consideration with non-adhering precip?
Takeoff “Deice/Anti-ice Winter Operations”
- Ambient temperature < -15°C
- Dry and light snow fall or ice crystals
- Contamination swirling or blowing off the aircraft surfaces under light winds and taxiing
- No adhering contamination is observed after the use of unheated forced air
Fueling with fuel that is higher than ambient temp could cause precip to adhere
When should flaps/slats be extended after being deiced/anti-iced?
Takeoff “Deice/Anti-ice Winter Operations”
Delay slat/flap extension until approaching the departure end of the runway but no later than required to accomplish the Before Takeoff Checklist in order to prevent fluid runoff from the leading and trailing edge devices
What are the most obvious signs of fluid failure?
Takeoff “Deice/Anti-ice Winter Operations”
- Precipitation being visible on a surface that has been anti-iced
- Fluid becomes opaque rather than transparent and glossy
When is a nose check required? How is it performed? What is considered a “representative surface”?
When is a wing check required? In what timeframe must is be accomplished?
What is the procedure for the Wing Check?
What is indicates that the anti-ice fluid is still effective?
FOM Adverse Weather 7.30.5
Nose Check
* Required when freezing precip has occurred since aircraft was determined to be clean (either via preflight inspection or post deice/anti-ice inspection)
* Performed shortly prior to takeoff from flight deck by inspecting aircraft representative surfaces to determine whether or not ice, frost or snow is accumulating, forming, or adhering to critical aircraft surfaces
* Representative surfaces: windshielf wiper and portion of fuselage visible from the flight deck
Wing Check
* Required when takeoff is not initiated within the holdover time or the Nose Check is unsatisfactory
* Must be accomplished within 5 minutes of the start of the takeoff roll
Wing Check Procedure
* Two-person rule (FOM 10.10.2): At least two people must be in the flight deck with door closed when in flight or with an engine running on the ground
* Parking brake set
* View wings from 3rd window fwd and the 6th window aft of the overwing emergency exits (usually marked with dark triangles)
* View both wings, as strong winds can cause one side to fail before the other
* accomplish visual inspection of wing surfaces, leading edges, engine inlets, and other surfaces of the aircraft visible from inside the cabin
* Focus on leading and trailing edges for early indication of imminent fluid failure
- a glossy-smooth, wet surface indicates that the anti-ice fluid is still effective
- If there is no suspected contamination on arrival but there is substantial taxiway contamination, what should you do with the flaps?
- What if contamination on arrival is suspected?
FOM Ch. 7 - “Possible Flap Contamination After Arrival
- Consider retracting the flaps immediately after exiting the runway to prevent accumulation on the flaps
- Do not retract flaps and contact Station Ops to make a verbal report that flaps are left extended after landing due to suspected contamination
How many ice detector probes does A321 NEO have?
When does green ICE NOT DET ECAM MEMO display?
When does amber ANTI ICE ICE DETECTED ECAM MEMO display?
When does amber SEVERE ICE DETECTED ECAM MEMO display?
2 - located on the forward lower section of the fuselage
ICE NOT DET
when ice has not been detected 190 seconds after engine or wing anti-ice is selected ON (still need to keep anti-ice ON if icing criteria are still met)
ANTI ICE ICE DETECTED
ice detected when:
1. in flight > 1500 ft and
2. TAT < 10°C and
3. engine anti-ice is off
SEVERE ICE DETECTED
__heavy__ ice detected when:
1. in flight > 1500ft
2. TAT < 10°C and
3. wing anti-ice is off
Thrust limitation on contaminated runways
FM Limitations 1.20.7
Takeoff at reduced thrust is not allowed on contaminated runways
Runways conditions in which operations are prohibited
FM Limitations 1.20.11
- Runway CC 0
- Control/Braking Action Nil
- Wet Ice
- Slush over ice
- Dry or wet snow over ice
- Water on top of compacted snow
When are periodic engine run-ups required on the ground prior to takeoff?
What is the runup procedure for 319/320? NEO?
FM 5.10.5 Supplementary Procedures - Adverse Weather Operations
Periodic run-ups to shed ice are required, even with anti-ice ON when:
1. in icing conditions, or
2. significant vibrations occur
319/320 Runup Procedure:
Each 15 minute interval 50% N1 minimum
- Accomplish first runup as soon as practical, but no more than 15 minutes after first engine start
- Min N1 must be reached, but no time limit for holding the N1
NEO Runup Procedure:
Each 30 minute interval 60% N1 minimum
- Accomplish first runup as soon as practical, but no more than 30 minutes after first engine start
- Min N1 must be reached, but no time limit for holding the N1
Minimum oil temperature before takeoff
Minimum oil temperature before IDLE is exceeded
FM 1.30.16 Limitations
Minimum oil temperature before takeoff: 50°C
Minimum oil temperature before IDLE is exceeded: -10°C
When must dispatcher add weight penalty for ice accumulation?
FM 5.10.1 (Supplementary Procedures - Adverse Weather Operations)
When:
1. Landing airport > 2000 ft and
2. temperatures below 10°C when enroute conditions are conducive to icing
OFP comment:
LW CONFIG: AI-ENG ANTI-ICE ON, ICE ACCRETION PENALTY
