Local Area Networks (LANs) in Aircraft - FTP Directory Listing - FAA

Survey Question
What is the primary role of your
employer in regards to commercial
aviation?
Build
Components
Build
Aircraft
Survey Responses
U.S.
Federal
Agency
Consultant
Number of respondents in each category: 7 3 5 5 2
21. Are aircraft-resident mechanisms in
place so that only software executables,
which have passed the integrity and
authentication provisions of the U.S.
Federal Digital Signature Standard, are
permitted to be installed within the
aircraft?
7 – NA 1 –Yes
2 - NA
5 – NA 5 – NA 2 - NA
22. Have you defined a formal process to
ensure the integrity and identity of your
software after it has been installed
onboard aircraft?
23. When can your software be installed
onboard aircraft?
24A. In your personal opinion, could the
following security failures during flight
potentially result in major (or greater)
safety failures to the aircraft: The
contents of the data packets that traverse
the airborne LAN become maliciously
altered?
24B. In your personal opinion, could the
following security failures during flight
potentially result in major (or greater)
safety failures to that aircraft: The
software that provides security control
protections onboard the aircraft LAN
becomes maliciously compromised?
24C. In your personal opinion, could the
following security failures during flight
potentially result in major (or greater)
safety failures to that aircraft: Integrity
of avionics software onboard the aircraft
becomes maliciously compromised?
24D. In your personal opinion, could the
following security failures during flight
potentially result in major (or greater)
safety failures to that aircraft: The
aircraft’s LAN becomes congested so that
packets sent across that LAN cannot
arrive in a timely manner?
1 – Yes
6 – NA
1 – locally,
ground only
5 – NA
4 – Yes
3 – No
3 – Yes
4 – No
5 – Yes
2 – No
6 – Yes
1 – No
1 –Yes
2 –NA
1 – local or
remote,
ground
only
2 – NA
1 – No
4 – NA
1 –
locally,
ground
only
4 – NA
3 – Yes 4 – Yes
1 – NA
2 –Yes
1 – No
2 –Yes
1 – No
4 – Yes
1 - NA
2 – Yes
2 – No
1 - NA
3 –Yes 1 – Yes
3 – No
1 - NA
1 – Yes
4 – NA
1 – locally,
ground only
4 – NA
1 – Yes
4 – No
1 – Yes
4 – No
2 – Yes
3 – No
1 – Yes
4 – No
Other
2 - NA
2 – NA
2 - No
2 - No
2 - Yes
2 - No
B-3