altitudine di decisione
Specified altitude in precision approach at which a missed approach must be initiated if runway not in sight.
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Flight Planning
Browse Flight Planning terms for pilots, air traffic controllers, cabin crew and aviation learners.
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altitudine di densità
Altitude at which the aircraft feels it is flying based on current pressure, temperature, and humidity, affecting performance.
View termaltitudine di pressione
Altitude indicated when the altimeter is set to the standard pressure setting of 1013.25 hPa (29.92 inHg).
View termcarburante alternato in rotta
Fuel required to fly from the destination to an alternate aerodrome en‑route under planned conditions.
View termcarburante riserva fissa
Fixed quantity of fuel required to be carried for emergencies as per regulatory minimum reserve rules.
View termcarburante riserva variabile
Additional reserve fuel calculated proportionally to flight time beyond the fixed reserve, for unforeseen delays.
View termcarburante taxi‑in
Estimated fuel required for taxiing after landing, including clearing runway and reaching gate.
View termcarburante taxi‑out
Fuel required for engine start, taxi, and contingencies before take-off.
View termclimb del secondo segmento
Climb segment from gear retraction to acceleration altitude with one-engine inoperative, maintaining prescribed gradient.
View termclimb finale di decollo
Climb segment after acceleration and flap retraction up to en‑route climb altitude with one-engine inoperative.
View termCodice Di Condizione Pista
Numeric Value From 0 To 6 Indicating The Braking Action And Surface Condition Of A Runway As Published In A Runway Condition Report.
View termComponente Di Vento Frontale
Wind Blowing Opposite To Aircraft Movement, Increasing Lift And Reducing Required Take‑Off Or Landing Distance.
View termComponente Di Vento In Coda
Wind Blowing In The Same Direction As Aircraft Movement, Reducing Lift And Increasing Required Take‑Off Or Landing Distance.
View termcomponente di vento in faccia
The component of the wind along the runway axis directed opposite to aircraft’s travel, used for performance calculations.
View termComponente Di Vento Trasversale
Wind Component Perpendicular To The Runway Centerline, Affecting Aircraft Lateral Control During Take‑Off And Landing.
View termcorrezione della lunghezza della pista per pendenza e temperatura
Adjustment applied to declared runway length to account for runway slope and ambient temperature effects on aircraft performance.
View termcorsa di decollo disponibile
Declared length of runway suitable for the ground run of an aircraft taking off, excluding clearway.
View termDecollo Con Temperatura Flex
Take‑off Using An Assumed Temperature Higher Than Actual To Reduce Thrust And Prolong Engine Life While Meeting Performance Requirements.
View termdistanza accelera-prosegui richiesta
Distance needed to accelerate to decision speed, experience an engine failure and continue take-off to 35 ft above runway.
View termdistanza decisione disponibile
Distance from threshold to point on runway where go‑around decision altitude is reached, allowing a missed‑approach before runway end.
View termdistanza di atterraggio disponibile
Declared length of runway that is available and suitable for the ground run of an aircraft landing.
View termdistanza di atterraggio richiesta
Calculated distance an aircraft needs to land and come to a complete stop under existing conditions.
View termdistanza di decollo disponibile
Declared length of runway plus clearway that is available and suitable for the ground run of an aircraft taking off.
View termdistanza di rullaggio a terra
The distance from brake-release or acceleration point to airplane lift-off during take‑off roll.
View termgradiente di salita in atterraggio
Minimum climb performance required during a go-around or missed approach with all engines operating.
View termGradiente Minimo Di Salita
Lowest climb gradient required to ensure obstacle clearance or meet procedure design criteria.
View termlunghezza della clearway
A defined rectangular area beyond the runway, free of obstructions, suitable for aircraft to continue take-off in case of engine failure.
View termlunghezza della stopway
The length of a stopway usable in the event of a rejected take-off, beyond the take-off run available.
View termlunghezza di pista bilanciata
Runway length at which accelerate-go and accelerate-stop distances are equal under specified conditions.
View termLunghezza Stopway
Length Of The Designated Area Beyond The Runway End That Can Be Used To Decelerate During A Rejected Take‑Off, As Part Of ASDA.
View termmassimo vento laterale dimostrato
The highest crosswind component at which satisfactory control was demonstrated during aircraft certification flight tests.
View termMatrice Di Valutazione Della Condizione Pista
Standardized Tool Used To Assign Runway Condition Codes Based On Surface Type And Contaminant Characteristics, Supporting Aircraft Performance Assessment.
View termpeso a terra
The total weight of the aircraft while parked at the ramp, including fuel, payload, and all crew and equipment before engine start or taxi.
View termpeso operativo a vuoto
The weight of an aircraft including all standard items and operating fluids but excluding payload and usable fuel.
View termpeso operativo base
The weight of an aircraft including crew, unusable fuel, and all necessary fluids for operation, excluding payload and usable fuel.
View termProfondità Della Contaminazione D’acqua
Vertical Thickness Of Water, Slush, Or Other Moisture‑Related Contaminants On The Runway Measured In Millimetres For Performance Calculations.
View termRapporto Di Azione Di Frenata
Pilot‑reported Assessment Of Actual Aircraft Braking Performance On A Runway Surface.
View termRequisito Di Salita In Avvicinamento
The minimum climb gradient that an aircraft must meet during the missed approach phase, considering one engine inoperative.
View termSpinta Di Decollo Ridotta
Reduced engine thrust setting used for take-off to extend engine life, improve fuel efficiency, and meet noise abatement procedures.
View termSpinta Di Decollo Ridotta
Thrust Less Than Maximum Take‑Off Thrust Applied During Take‑Off To Increase Engine Life And Optimize Operational Efficiency.
View termSpinta Massima Continua
The highest level of engine thrust that can be used continuously without time limitation under normal operating conditions.
View termsuperficie del segmento visivo
An obstacle‑free area beyond the runway threshold, providing required visual clearance during the final approach segment.
View termsuperficie di separazione ostacoli
Imaginary inclined plane established to ensure minimum safe vertical separation between aircraft flight paths and obstacles.
View termtasso di caduta della temperatura atmosfera standard
The rate at which temperature decreases with altitude under standard atmospheric conditions, 2 °C per 1000 ft or 6.5 °C per 1000 m.
View termtraiettoria netta di decollo
Minimum vertical profile flown after take‑off, reduced from gross climb to ensure obstacle clearance following critical-engine failure
View termvelocità calibrata
Indicated airspeed corrected for instrument and position errors, used for accurate performance calculations.
View termvelocità di riferimento di atterraggio
Target speed established by crew to optimize landing safety and performance, typically VREF plus wind correction.
View termvelocità di riferimento di avvicinamento
Speed selected for use on final approach segment, ensuring safe control margin above stall but stable profile.
View termvelocità di sicurezza al decollo
Target airspeed reached after V2 during take‑off, providing sufficient climb gradient with one engine inoperative.
View termvelocità equivalente
Indicated airspeed corrected for compressibility effects at altitude, used for performance comparisons.
View termVelocità Massima Del Pneumatico
The highest ground speed a tire can sustain without risking structural failure, defined by aircraft and tire manufacturers.
View termVelocità Massima Di Energia Di Frenata
The highest speed from which an aircraft can stop without exceeding the maximum brake energy limit, used to ensure brake system integrity and safety.
View term