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

APPENDIX B—THE FAA LAN SURVEY RESULTS
During June 2006, the Federal Aviation Administration (FAA) distributed the FAA local area
network (LAN) survey to several hundred people who are associated with constructing airborne
software in some manner. Twenty-two people responded. The following table tabulates the
responses. The table is organized in terms of the function the responder’s identified their
employer as performing. None of the responders said that their employer was a commercial
airline company, so that column is not included within the following tabulation results.
Survey Question
Survey Responses
What is the primary role of your
Build Build U.S. Consultant Other
employer in regards to commercial
aviation?
Components Aircraft Federal
Agency
Number of respondents in each category: 7 3 5 5 2
1. Have you or are you currently
planning to deploy, design, or build
software or devices that reside on LANs
onboard aircraft?
2. How many different LAN-attached
devices have you already deployed,
designed, or built for deployment on
aircraft?
3. How many different LAN-attached
devices do you currently have specific
plans to build and/or deploy in the future
for deployment on aircraft?
4. How many of these (built or planned)
LAN-attached devices have (or will
have) their intelligence primarily be
silicon or firmware based?
5. How many of these (built or planned)
LAN-attached devices contain (or will
contain) software?
6. Does (or will) any of your software
components communicate across an
airborne LAN using the Internet
Protocol?
7. Is any of your LAN-attached software:
DO-178B Level A software?
8. Is any of your LAN-attached software:
DO-178B Level B software?
9. Is any of your LAN-attached software:
DO-178B Level C software?
10. Is any of your LAN-attached
software: DO-178B Level D software?
4 - Yes
2 - No
1 - NA
2 – 10+
2 – 1 or 2
3 - NA
2 – 10+
2 – 1 or 2
3 - NA
2 – 10+
1 – 3 to 5
1 – zero
3 – NA
2 – 10+
1 – 1 or 2
1 – zero
3 - NA
1 – Yes
2 – No
4 - NA
2 – Yes
5 - NA
1 – Yes
6 – NA
1 – Yes
6 – NA
1 – Yes
6 – NA
1- Yes
2 - No
1 – 3 to 5
2 - NA
1 – 3 to 5
2 - NA
1 – zero
2 - NA
1 – 3 to 5
2 - NA
1 –Yes
2 – NA
1 –Yes
2 - NA
1 –Yes
2 - NA
1 –Yes
2 - NA
1 –Yes
2 - NA
3 - No
2 - NA
1 – zero
4 - NA
1 – 1 or 2
4 – NA
1 – 1 or 2
4 – NA
1 – 3 to 5
4 - NA
1 – Yes
4 – NA
1 – No
4 – NA
1 – No
4 – NA
1 – No
4 – NA
1 – Yes
4 – NA
2 - Yes
3 - No
1 – 6 to 9
1 – 1 or 2
3 - NA
1 – 3 to 5
1 – 1 or 2
3 – NA
1 – 10+
1 – 1 or 2
3 – NA
1 – 6 to 9
1 – 1 or 2
3 – NA
2 – Yes
3 – NA
1 – No
4 – NA
1 – No
4 – NA
1 – No
4 – NA
1 – Yes
1 – No
3 – NA
1 - Yes
1 - No
1 – 6 to
9
1 - NA
1 – 3 to
5
1 - NA
1 – 3 to
5
1 - NA
1 – 3 to
5
1 - NA
1 – Yes
1 - NA
1 – No
1 - NA
1 – No
1 - NA
1 – No
1 - NA
1 – No
1 - NA
B-1