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So okay, GAO are a bunch of carrot pullers, who know nothing except talk, however they can point out that some areas that should now be covered, are not, and there is no word of it as yet.
Avionics Full-Duplex Switched Ethernet (AFDX) is a data network, patented by international aircraft manufacturer Airbus, for safety-critical applications that utilizes dedicated bandwidth while providing deterministic quality of service (QoS). AFDX is based on Ethernet technology using commercial off-the-shelf (COTS) components. AFDX is a specific implementation of ARINC Specification 664 Part 7, a profiled version of an IEEE 802.3 network per parts 1 & 2, which defines how commercial off-the-shelf networking components will be used for future generation Aircraft Data Networks (ADN)
The AFDX bus is used in Airbus A380, Boeing 787, Airbus A400M, Airbus A350, Sukhoi Superjet 100, ATR 42 & ATR 72 (-600), AgustaWestland AW101, Irkut MS-21, Bombardier Global Express, Bombardier CSeries, Comac ARJ21, AgustaWestland AW149
But when reading the FBI search warrant application for Roberts, it’s important to consider that IFE systems on commercial airplanes “are isolated from flight and navigation systems”, Boeing said in a statement after myriad news titles reported the FBI claims as fact.
“While these systems receive position data and have communication links, the design isolates them from the other systems on airplanes performing critical and essential functions.”
IFE is typically certified to Design Assurance Level (DAL) E under the FAA’s DO-178B software guidance for airborne systems. Level E is the least stringent level of rigor put into design, verification and testing, as a fault is expected to have no effect on the safe operation of the aircraft. By contrast, radios are certified as Level D and avionics are Level C.
There are ARINC 429 connections to IFE systems (for mission data) “that are not segmented as diligently as with ARINC 664 Ethernet domains. It would take software manipulations to control the 429 interfaces from a compromised Ethernet connection. Regardless, the IFE ARINC 429 interfaces are not capable of changing automatic flight control modes,” notes industry expert Peter Lemme, who chairs the AEEC subcommittee that builds standards for Ku and Ka satcom systems.
“The claim that the Thrust Management System mode was changed without a command from the pilot through the mode control panel, or while coupled to the Flight Management System is inconceivable,” he adds.
In a post 9/11 world, the further claim that Roberts tried to hack IFE systems multiple times by direct physical interface also seems fantastical, says IFE industry consultant Michael Planey. “We have seen multiple instances of passengers being restrained by fellow passengers or flights diverted because a passenger is behaving abnormally. I find it nearly impossible to believe Roberts could have done this type of an act over a dozen times and never had a flight crew or fellow passenger notice – that part stretches the imagination. Furthermore, in the event that what he claims about monkeying with the Thrust Management System occurred, that would have been noted by the flight crew; they would have noticed the aircraft was moving not by command from the cockpit. There would have been many ways in engine monitoring and flight control management systems to detect this sort of event, and I would have expected the pilots would have written it up and there would have been an investigation. So I don’t believe what he says to be true.”
Lemme adds, “Thrust Management has always relied on the pilot as an active monitor for failure, and the pilot has complete authority to override any failure mode."
originally posted by: Phage
Actually, it makes me think that our hacker read that article and rather than actually doing anything, talked to the FBI about what the report said about potential vulnerabilities.
originally posted by: Zaphod58
a reply to: roadgravel
There's no "seem to" he IS stating that he use the IFE network. But the IFE network doesn't get you anywhere, because it doesn't connect to anything that can control the aircraft.
There's no "seem to" he IS stating that he use the IFE network.