The Air Blog...
  • Home
    • About me
  • ATC Blog
    • Skyguide ATCO Italiano >
      • Condizioni di ammissione
      • La fase di selezione >
        • Aptitude 1
        • Aptitude 2
        • Aptitude 3
        • Test di Inglese
      • Test Medico
      • Skyguide Training Center
      • Training
  • Pilot Blog
    • Aircraft Data >
      • Single Prop Engine
      • Two Prop Engine
      • Business Jet Aircraft
      • Turboprop Airliner
      • Medium/Short Range Jet Aircraft
      • Long Range/Wide Body Jet Aircraft
      • Helicopters
      • Swiss Military Aircraft
      • Warbirds
  • My Spotting
    • Switzerland >
      • LSZA
      • LSZL
      • Cielo Aperto
      • Skyguide VFR Training
  • Links
  • Contacts

WHAT ARE AIRPROX?

5/23/2013

0 Comments

 
Immagine
An AIRPROX is a situation in which, in the opinion of a pilot or air traffic services personnel, the distance between aircraft as well as their relative positions and speed have been such that the safety of the aircraft involved may have been compromised. (ICAO Doc 4444: PANS-ATM).

ICAO defines a series of classifications for AIRPROX events which have been reported and subsequently investigated by an appropriate body. It is required that this classification should be assigned on the basis only of actual risk, not potential risk. This means that only the residual risk after any avoiding action is considered. The available classification categories are:

  • A - Risk of collision. The risk classification of an aircraft proximity in which serious risk of collision has existed. An A AIRPROX may or may not be deemed to be a Serious Incidentas defined by ICAO Annex 13.
  • B - Safety not assured. The risk classification of an aircraft proximity in which the safety of the aircraft may have been compromised.
  • C - No risk of collision. The risk classification of an aircraft proximity in which no risk of collision has existed.
  • D - Risk not determined. The risk classification of an aircraft proximity in which insufficient information was available to determine the risk involved, or inconclusive or conflicting evidence precluded such determination.
The definition and classification of an AIRPROX given above was agreed prior to the introduction of ground radar and airborne systems (ACAS) capable of measuring accurately the actual separation of the aircraft involved.

An AIRPROX may occur as a result of a Level Bust or Airspace Infringement. Safety nets such as ACAS and STCA mitigate the resultant risk of collision.

An AIRPROX is commonly referred to as a Near Midair Collision (NMAC) in the USA; however, they are not precisely the same as a comparison of their definitions demonstrates. Whereas an NMAC is always an AIRPROX, an AIRPROX is not necessarily an NMAC.

Reporting and Investigation of an AIRPROXICAO require the establishment of AIRPROX reporting and investigation procedures and these are specified in national procedures.

Typically, national authorities establish a special committee to investigate AIRPROX reports which allocates the actual risk classification and to recommend further action. Some States use their Annex 13 Accident Investigation Agency to also investigate all AIRPROX, not just those which are considered to be a Serious Incident. Very few states freely publish their AIRPROX investigations - Switzerland and the UK are notable exceptions.

An AIRPROX should be reported as soon as possible to facilitate investigation of the incident. If circumstances allow, the pilot should report the incident immediately to ATC using RTF, the details will then be reported by ATC to the appropriate body. If it is not possible to report an AIRPROX in flight (e.g. because the frequency in use is too busy) the pilot should report the incident as soon as possible after landing. ATS units to whom AIRPROX incidents are reported should also report the circumstances of which they are aware to the appropriate body. In all cases, initial verbal reports should be followed up by full written reports using any prescribed form which may be in use for that purpose.

Depending on circumstances, an AIRPROX may qualify as a Serious Incident which will then require that it be reported to and investigated by the National Accident Investigation Agency under the terms of ICAO Annex 13, Chapters 4 and 5. Non-Annex 13 AIRPROX investigations are essentially a special case of State Mandatory Occurrence Reporting and follow up by or in association with the applicable Regulatory Authority under the terms of ICAO Annex 13 Chapter 8, whereas an Annex 13 Investigation is independent of Regulatory influence.

Further Reading
  • ICAO Annex 13: Accident and Incident Investigation
  • ICAO Doc 4444: PANS-ATM
  • Aiprox Report between BEC016 / 7T-WHB 30 NM SSW of Geneva

0 Comments



Leave a Reply.

    Archives

    Gennaio 2015
    Ottobre 2014
    Settembre 2014
    Luglio 2014
    Giugno 2014
    Maggio 2014
    Febbraio 2014
    Gennaio 2014
    Dicembre 2013
    Novembre 2013
    Ottobre 2013
    Settembre 2013
    Agosto 2013
    Luglio 2013
    Giugno 2013
    Maggio 2013
    Aprile 2013
    Marzo 2013
    Febbraio 2013
    Gennaio 2013
    Dicembre 2012
    Novembre 2012
    Settembre 2012
    Agosto 2012
    Luglio 2012
    Giugno 2012
    Maggio 2012
    Aprile 2012
    Marzo 2012
    Febbraio 2012
    Gennaio 2012
    Dicembre 2011
    Novembre 2011

    Categories

    Tutto
    2013
    2014
    747 8
    747-8
    767
    787
    A300-600
    A319
    A320
    A320neo
    A321
    A330
    A350
    A350 Xwb Msn001
    A380
    Aa
    Accident
    Af 447
    Agno
    Air 14
    Airasia
    Air Berlin
    Air Berlin Group
    Airbus
    Airbus Annual Press Conference
    Airbus Helicopters
    Air France
    Air Kbz
    Air New Zealand
    Airport
    Airprox
    Air Show
    Air Traffic Control
    Alabama
    Alitalia
    Ambri Fly-In 2013
    America Airlines
    American
    American Airlines
    Ana
    Ancona
    Anna Ruchat
    Annual Report 2011
    Asiana
    Atc
    Atr 72 600
    ATR 72-600
    Atsb
    Avherald
    Aviation Safety Network
    Aviazione
    Avilu
    Avilu; Progress Test
    Avweb
    B737
    B747
    B777
    Baggage
    Bagram
    Bali
    Battery
    Bilbao
    Biofuel
    Boeing
    Bombardier
    Breitling
    British Airways
    Britten-Norman
    C-17
    Cabin Baggage
    Cae
    Cambridge
    Carolyn Mccall
    Cathay Pacific
    Cfm
    Cfm International
    Challanger 350
    Cirrus
    Concorde
    Crash
    Crosswind
    Cseries
    DA-40 NG
    Da42
    Darwin Airline
    Darwin Airlines
    Dassault
    Davis Island
    Delta
    Diamond
    Dock B
    Domenic Neil Hug
    Don Brown
    Dreamliner
    Drones
    Dubai Air Show
    Easa
    Easyjet
    Ebace
    Ebace2013
    Ecodemostrator
    Efficiency
    E-jet
    Eletronic Devices
    Embraer
    Engine
    Esami
    Ethiad
    Ethiad Airways
    Ethiad Regional
    Ethiopian Airlines
    Eurocontrol
    Eurocopter
    Fa 18
    FA-18
    Faa
    Falcon5x
    Fedex
    Finnair
    First Flight
    Fleet
    Flightglobal
    Flight Plan
    Flight Tracker
    Flying Wild Alaska
    Gadget
    Geneva
    Global Market Forecast 2012-2031
    Goair
    Gopro
    Gripen
    Groundspeed
    Groundspeedrecord
    Hainan Airlines
    Hand Baggage
    HD-Aviation
    Hunter
    I-4D
    Iag
    Iberia
    Icao
    Incidenti
    Ipossia
    Japan
    Japan Airlines
    Jas 39
    Jetblue
    Jet History
    Jetstar
    John Travolta
    Klm
    La Bourget
    Landing
    LEAP-1B
    Legislazione Aeronautica
    Lion Air
    Lockheed Martin
    Los Roques
    Lufthansa
    Lufthansa Group
    Lugano
    Lugano Airport
    Maurer
    Md11
    Medicina
    Merge
    Meteorologia
    MH17
    Minoan Air
    Missioni
    N949ca
    Nasa
    National Airlines
    Navigazione
    Navigazione Aeronautica
    Navitimer
    Ndb
    Niki
    Norwegian
    Ntsb
    Olmo Cerri
    Order
    Oris
    Oscar Schwenk
    Oxford Aviation
    P3 Flyers
    Paris
    Payerne 2014
    Pc12
    Pc 24
    PC-24
    Pc3 Team
    Pc7
    PC-7
    Pegasus
    Petra
    Pilatus
    Pilatus Aircraft
    Pilot Job
    Ppl
    Pratt & Whitney
    Premium Economy
    Purepower
    Pw1100g
    Qantas
    Qatar Airways
    Radar
    Results
    Rolls-Royce
    Roma
    Ryanair
    Saab
    Saab2000
    Safety
    Safety Video
    Sas
    Sfo
    Sharklet
    Sharklets
    Simulatore
    Singapore Airlines
    Skunk Works
    Skyguide
    Solar Impulse
    Space Shuttle
    Sr20
    Sr22
    SR-71
    SR-72
    Srilankan Airlines
    Su95
    Sukhoi
    Super Hornet
    Svizzera
    Swiss
    Swiss Air Force
    Swiss International Airlines
    Swiss International Airlines
    Swiss Space System (S3)
    The Globe And Mail
    Thomson Airways
    Tokyo
    Tom Cardoso
    Trent Xwb
    Upper Class Suite
    Ups
    Usaf
    Us Airways
    Us Navy
    Virgin
    Volare
    Volo
    Volo In Ombra
    Vor
    Washigton Post
    Wi-fi
    Wind
    X-47B
    Yaroslav
    Yk42
    Zurich


Powered by
✕