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AIRBUS Braking Action Computation Function (BACF) key information

RunwaySense allows airlines and airports to precisely assess and report runway conditions by using AIRBUS aircraft as a sensor. RunwaySense is based on the AIRBUS Braking Action Computation Function (BACF), which is a Free-Of-Charge software released by NAVBLUE in 2019 on the AIRBUS A320 Family Aircraft, in return the airline agrees to direct the ACARS messages to NAVBLUE’s RunwaySense Web-platform.  


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Prerequisites and deliverables 


A320 Service Bulletin (BACF V4.2)

Software and hardware prerequisites

Deliverables

ATSU software standard: 

  • Pre-FANS minimum CSB7.2, or
  • FANS A+ minimum CSB7.2, or
  • FANS B+ minimum CSB6.5, or
  • FANS C minimum CSB 9.2.3

ATSU hardware standard: 

  • C40 / C50 / C70 (Pre-FANS, FANS A+(1)), or
  • A10 (Pre-FANS, FANS A+, FANS B+ or FANS C)

FWC standard: minimum H2-F6

SDAC standard: minimum H2-E2(2)

DMC standard: 

  • EIS1: minimum V60, or 
  • EIS2: minimum S5

 

  1. If ATC ARINC 623 software (FIN 23TXSW1) is not installed
  2. There is a limitation of SDAC H2-E2 is used. BACF will not be able to detect in pedal braking mode, only Autobrake MED. 

 

Service Bulletin (SB)

There are two SBs for the different configurations, available since January 2021:

  • SB 46-1170 = A320 CEO family
  • SB 46-1171 = A320 NEO family

 

Media P/N: LA2T0P20040S0C1

 

RunwaySense Web-Platform

Access your own data in real time through the RunwaySense Web-Platform or API plus 2 years of history of data

 

Customer Support 

Customer support 24/7 

eLearning via NAVBLUE ACADEMY

Personal credentials to access the Web-Platform     

 


ACARS message content 

ACARS message does not content any sensitive information. An ACARS message size is maximum 208 bytes and is sent only when a braking action is detected; this represents approximately 30% of the landing. 

The ACARS message transmits to the ground a set of data generated by BACF software:

  • Message type (error or normal)
  • Flight Number (from FMS)
  • Destination airport (from FMS)
  • Aircraft and Engine Type
  • Time message was sent
  • Error Code (if applicable)
  • GPS position(s) (to identify landing runway and geo-localize the braking action zones along the runway axis)
  • Ground speed(s) at start and end of each braking action zone(s)
  • Overall average braking action computed
  • Braking action computed for each zone (up to 3 separate identification zones if applicable)

Applicability

  • A320 Family Aircraft 
  • A330 Family Aircraft – Please contact your Sales Director to place an order 
  • A220 and A350 currently under review
  • Non-AIRBUS not applicable 


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