Cold Weather Operations - AIRBUS
AAVA – FLIGHT OPERATIONS MANUAL
COLD WEATHER OPERATIONS
FOR FLIGHT SIMULATION USE ONLY
1.0 GENERAL & AAVA APPLICABILITY
This sectionmanual describesapplies to every AAVA flight operated in this aircraft family, regardless of airline branding, callsign, codeshare, heritage, event, charter, passenger or cargo designation. All AAVA flights use the same Hub Operations winter operating framework based on American Airlines-style operational standardsstandardization; forno actual American Airlines proprietary SOP or regulatory operations-specification approval is implied.
Cold-weather awareness is condition-driven and applies all year, not only November–April. Evaluate icing conditions, frost, snow, freezing precipitation, airport and runway conditions, freezing fuel/clear ice, and delays. Temperature alone does not establish every anti-ice switch requirement.
Hierarchy: applicable aircraft-specific AFM/FCOM/QRH and addon limitations → applicable FAA fluid guidance/aircraft performance data → AAVA flight-operations procedures. If guidance conflicts, use the higher-authority aircraft during cold weather operations. It includes ground deicing/anti-icing, in-flight icing protection,limitation and contaminated-runwaynotify considerations.ProceduresHub are aligned with Airbus operational philosophy and tailored for simulation realism, safety, and standardization across the AAVA fleet.Operations.
Cold weather considerations include:– OAT or TAT at or below 10°C– Visible moisture (rain, snow, ice pellets, freezing fog)– Frost, ice, or snow accumulation– Operations on contaminated taxiways or runways
All cold-weather operations adhere to the Clean Aircraft Concept.
2.0 CLEAN AIRCRAFT CONCEPT & PRE-FLIGHT
The aircraft shallDo not departbegin unlesstakeoff allwith frost, ice, snow or slush on critical surfaces areunless verifieda freespecifically applicable aircraft-approved exception is established. The captain is accountable for the final departure decision. Ground treatment is not a substitute for verification.
Inspect wings (upper and leading-edge surfaces), tail, control surfaces, slats/flaps/fairings, engine inlets, probes, ports, sensors and other aircraft-designated critical areas. Include contamination from overnight exposure, freezing fog, ground spray and cold-soaked fuel.
Transparent ice can be difficult to identify visually. Do not assume an overwing-window or flight-deck view reliably establishes the condition of frost,every ice,surface. snow,Use an authorized ground or slush.Thetactile Captaininspection iswhen responsible for confirming the aircraft is cleannecessary, and safedo fornot departure.invent a manufacturer frost exception.
2.1 CRITICAL SURFACES
The following surfaces must be contamination-free:– Wing leading edges and upper wing surfaces– Horizontal stabilizer– Vertical stabilizer– Slats, flaps, and fairings– Ailerons, elevators, and rudder– Engine inlets, spinner, and fan blades– Probes, ports, and sensors
2.2 CLEAN AIRCRAFT VERIFICATION
A Clean Aircraft Check is required when:– Frozen precipitation continues after deicing/anti-icing– Holdover time (HOT) is nearing expiration– A delay occurs prior to takeoff– Fluid effectiveness is uncertain
Verification methods:– Flight Deck Check (within valid HOT)– Cabin Check (HOT expired or heavy snowfall) via overwing windows, referencing the left wing root — the oldest application point
3.0 GROUND DEICING / ANTI-ICING
3.1 OVERVIEW
Deicing removes contamination.Anti-existing contaminants; anti-icing preventsuses newan accumulation.Bothappropriate requirefluid to protect previously clean surfaces from renewed contamination for a limited time. When frozen precipitation is falling or expected before takeoff, assess whether anti-icing protection is required in addition to removal.
SAE Type I typically provides shorter protection. Types II, III and IV have distinct aerodynamic acceptance, aircraft-speed eligibility and fluid-specific limits. Do not presume a fluid is suitable simply because it is available; apply aircraft and FAA fluid restrictions.
Deicing only: use when contamination is removed and the aircraft will stay clean to takeoff. One-step deicing/anti-icing: use only where fluid/application conditions produce an applicable valid HOT. Two-step: remove contamination and apply a compatible anti-icing fluid when continued protection is needed. Where degraded fluid exists, use the applicable removal/re-treatment procedure, not a simple top-off.
3.1 Ground crew coordination
1. Confirm aircraft identifier, location, contamination and weather conditions, type of treatment requested, and estimated taxi/departure delay.
2. Coordinate required aircraft flap/slat position, engine/APU and pneumatic configuration, windows/doors, truck clearances, anti-collision lights and safety zone using the exact aircraft-specific procedures.
3. Receive fluid type/brand, mixture/concentration, final application start time and confirmation that treatment and post-treatment checks are complete; record them for the departure decision.
4. Do not taxi until the ground team reports clear coordinationpersonnel/equipment withand the crew completes the applicable after-treatment checklist.
4.0 FAA WINTER 2026–2027 HOLDOVER / ALLOWANCE TIMES
The separately distributed FAA Holdover Time Guidelines for Winter 2026–2027 (original issue 11 August 2026) and the companion FAA Ground Deicing Personnel.
3.2General APPROVEDInformation FLUIDare TYPES
the Typecontrolling I Fluid– Hot glycol mixture– Used primarilyreference for deicing–table Providesselection. limitedHub holdoverOperations time–must Smooth glossy film = effective– Slush/roughness = fluid failure
Type IV Fluid– Thickened, long-lasting anti-ice fluid– Used after Type Icheck for extendedrevised HOT–editions. ShearsNotice off8900.784 naturallydescribes duringthis takeoffwinter’s roll–FAA No performance penalty for Airbus aircraftprogram.
3.3 HOLDOVER TIME (HOT)
HOT begins whenwith the finalstart of the FINAL deicing/anti-icing applicationstep starts.
for a two-step treatment (or the start of the applicable one-step treatment), as specified by the FAA guidance. It is an estimated protection interval, not a certification that the aircraft remains clean.
Select the proper table using SAE fluid type, tested fluid brand, concentration, aircraft-material category where applicable (particularly Type I aluminum versus composites), temperature and precipitation. Follow table notes, lowest operational use temperature and aircraft-speed restrictions. Degree-specific HOT expiresmay be available under the FAA program.
Check the current precipitation and temperature before departure. If precipitation intensity/type changes, temperature decreases, or an unexpected delay occurs, reassess the validity of the selected protection. No published HOT means no assumed HOT.
Allowance times for ice pellets/small hail are distinct from normal HOT; they depend on eligible validated fluids and precise FAA conditions. Do not use a visual cabin check to create an unlimited extension. Heavy snow and particular freezing precipitation may have no HOT: follow the current FAA limitation and authorized inspection/re-treatment path.
4.1 Pre-takeoff contamination decision
5. Confirm treatment completion, ground crew clearance and clean-aircraft inspection status.
6. Update airport weather and identify the precise precipitation type/intensity and temperature.
7. Confirm applicable fluid data and that the correct FAA table, notes and HOT/allowance logic remain valid.
8. Perform any required aircraft-specific pre-takeoff check or pre-takeoff contamination check, by authorized person/method and within the applicable time requirement.
9. If critical surfaces cannot be confirmed clean, no permitted protection path exists, or the condition changed beyond current guidance: do not depart; inspect and/or re-treat.
5.0 CONTAMINATED RUNWAY & FLIGHT PLANNING
Before takeoff and landing, review reported runway condition, runway condition codes (RWYCC) when available, precipitation depth/type, braking-action reports, runway length and slope, crosswind, and available aircraft-specific performance calculation. A dry-runway calculation must not be treated as a contaminated-runway result.
Evaluate delays and alternate/diversion planning. Landing distance margins and takeoff power/flap choices are model-specific; “maximum thrust for all contaminated runways” and a universal reverse-thrust reduction speed are not reliable substitute procedures.
A slippery rejected takeoff or landing requires the aircraft-specific braking, directional-control and reverse-thrust technique. Follow the specific FCOM/QRH rather than a blanket rudder/braking speed threshold.
6.0 AIRBUS A320 FAMILY ENGINE ANTI-ICE
Use ENG ANTI ICE per the installed A319/A320/A321 FCOM for ground and in-flight icing conditions, accounting for engine type, external temperature, visible moisture and phase-specific criteria. An unqualified “OAT/TAT ≤10°C with visible moisture” statement alone is not adequate for all phases.
Confirm the effects of anti-ice on idle thrust, climb performance, fuel planning, approach and landing calculations. Use ECAM indications and the applicable abnormal/non-normal procedure when the fluidsystem canreports nofaults longeror preventsuspect ice accretion.
Any prolonged low-thrust icing operation or engine ice-shedding run-up must use the accumulationcorrect ofengine-specific frost,FCOM ice,technique. snow, or slush.
Precipitation anticipated at the time of application must be considered when determining HOT applicability.
3.4 ENGINE & FLAP CONFIGURATION
– Deicing with engines running requires a safe spray zone and coordination with Ground Personnel.– Flaps should normally be set to the planned takeoff configuration prior to deicing.– If flaps must remain in a contamination-removal configuration, ensure all contaminants are cleared before returning to a normal takeoff configuration.
CAUTION:
Do not retractimpose flaps/slatsa ifuniversal contamination15-minute remains in flap tracksinterval or fairings.N1 target across CFM, IAE, PW or LEAP variants.
4.7.0 IN-FLIGHTAIRBUS ICINGA320 OPERATIONS
4.1FAMILY WING ANTI-ICE (WAI)/ IN-FLIGHT ICING
Follow the A320-family FCOM for WING ANTI ICE use in icing conditions. Do not describe “wait for visible ice” as a universal primary activation method. Aircraft ice detection/ECAM cues, flight phase and manufacturer procedures determine the action.
Monitor icing and aircraft handling; review ice-related protections, speed margins, approach performance and the relevant ECAM/QRH guidance. The historical general rule below −40°C SAT must not override manufacturer-specific limits or instructions.
Where severe icing or unmodeled system behavior is encountered, prioritize remaining within aircraft operating limitations and leaving the conditions when necessary.
8.0 AIRBUS GROUND CONFIGURATION, CLEAR ICE & ICE RIDGES
Before treatment, use the applicable aircraft FCOM for slat/flap configuration, engines/APU, bleed/pack settings, air-conditioning inlets, doors and windows. Deicing in the wrong configuration can obstruct contaminant removal or expose equipment; do not transplant 737 flap angles or checklists.
Cold-soaked fuel can produce clear ice or frost difficult to see on wing upper surfaces. Only use a cold-soaked fuel frost exception where a verified aircraft-model/manufacturer procedure expressly permits it and all conditions are satisfied.
Inspect the lower forward fuselage, especially in front of pitot probes, for ice ridges. Airbus WAIidentifies these as a source of unreliable airspeed; any ridge must be removed using the proper maintenance/deicing procedure. Protect pitot/static/AoA sensors from direct deicing spray.
For post-landing flap retraction when ice may be usedpresent, infollow twothe ways:
PrimaryAirbus MethodFCOM/maintenance —precautions. DeicerThe Mode
prior Activateuniversal WAI when ice is visible on:– Window frames– Center windshield post– Wiper arm areas– Wing surfaces
Advantages:– Produces cleanest airfoil– Minimizes runback ice– Reduces thrust and fuel penalties
Secondary Method — Anti-Icer Mode
Activate WAI before ice accumulation only during extended operations in moderateinstruction to severeretain icing.
General1 Notes
until – WAI is normally not required below –40°C SAT– At high altitudes, turn WAI OFF when no longer needed– Prolonged icing operations with flaps extendedcleared is not recommendedissued without variant-specific substantiation.
5.08.1 ENGINEAirbus ANTI-ICEother (EAI)families — excluded from this publication
EngineThe anti-iceA220, shallA300/600, beA330, usedA350 when:–and OAT/TATA380 ≤have 10°Cdifferent systems and visiblemanufacturer moistureoperating istechniques. present–They Icewill isreceive detectedseparate visuallyaircraft-family orprocedures. byDo performancenot change–apply Conditionsthis conduciveA320-family tobooklet icingas existtheir (clouds,aircraft precipitation, fog, slush spray)supplement.
Indicators of possible engine icing:– Fan vibration– N1/N2 fluctuation– Reduced thrust for given lever position– Increased EGT
6.9.0 DESCENTSIMULATION IN& ICINGOPERATING CONDITIONSLIMITATIONS
DuringFor descentsimulators that model deicing, icing or holdingrunway inbraking, moderatepilots tomust severeuse icing,the withinstalled thrustaircraft belowprocedures stableand parameters:
Everylimitations. ~15If minutes:–the Increaseplatform onedoes enginenot atmodel ground-fluid protection, simulate the realistic decision and paperwork sequence; a timelogged toHOT atdoes leastnot thecreate minimumactual requiredsimulator N1 to shed accumulated ice– Maintain increased thrust for several secondsprotection.
This clearsmanual provides AAVA operational expectations, not real-world dispatch authority or an alternative to manufacturer-approved guidance. Do not apply a procedure from one aircraft engine or generation to another without verification.
10.0 REFERENCE CONTROL
FAA Holdover Time Guidelines, Winter 2026–2027, original issue 11 August 2026 (supplied separately; check for updates): https://www.faa.gov/other_visit/aviation_industry/airline_operators/airline_safety/deicing/
FAA Notice 8900.784, 3 August 2026: https://www.faa.gov/regulations_policies/orders_notices/index.cfm/go/document.information/documentID/1045444
FAA AC 120-60B, Ground Deicing and Anti-icing Program: https://www.faa.gov/regulations_policies/advisory_circulars/index.cfm/go/document.information/documentID/23199
Airbus Safety First — Look out for Ice Ridges on the spinner,Lower fanNose blades,Fuselage: https://safetyfirst.airbus.com/look-out-for-ice-ridges-on-the-lower-nose-fuselage/
AAVA Cold Weather Operations baseline and inletHub areas.Operations Deice/Anti-Ice Procedure / Winter Operations Reference Card. Standards apply across all AAVA operating divisions.
7.11.0 APPROACH,CHANGE LANDING & CONTAMINATED RUNWAY OPERATIONSRECORD
7.1
2026–2027 FLAPedition: RETRACTIONseparated AFTERgeneral LANDINGFAA (AIRBUS)
Ifand icecontaminated-runway accumulation is observed or suspected after landing:– Do not retract directlyrequirements from CONFaircraft-specific FULLcockpit orsettings; CONFremoved 3unsupported tofleetwide UP–N1, Maintain at CONF 1 until surfacesflap and tracks are confirmed clear of ice
When contamination is removed, the flaps may be retracted from CONF 1 → UP.
7.2 REVERSE THRUST USE
On contaminated or slippery runways:– Apply reverse thrust asnumbers; neededadded forFAA a2026–2027 safe stop– Below 60 kt, reduce reversers smoothly when conditions permit
7.3 TAKEOFF FROM CONTAMINATED RUNWAYS
– Use maximum takeoff thrust– Within 5 minutes of takeoff (or combined with takeoff roll), conduct:– Engine run-up to at least the minimum N1 stabilization range for several seconds– Ensure engine stabilization prior to applying takeoff thrust– During a rejected takeoff, rudder provides primary directionaldocument control toand approximatelyexplicit 60inspection/re-treatment ktdecision process; preserved aircraft-specific operational topics.
7.4 SAFETY PRIORITY
During landing or a rejected takeoff on contaminated surfaces:Stopping the aircraft is always the highest priority.