Light Sport Aircraft
Flight Crew Private
Flight Crew Last 90 Days 27; Flight Crew Total 480; Flight Crew Type 480
Troubleshooting; Situational Awareness; Human-Machine Interface; Distraction; Confusion; Workload
Aircraft Equipment Problem Less Severe; Airspace Violation All Types; Deviation / Discrepancy - Procedural Published Material / Policy; Deviation / Discrepancy - Procedural FAR
Flight Crew Became Reoriented; Flight Crew Exited Penetrated Airspace; Flight Crew Overcame Equipment Problem
ATC Equipment / Nav Facility / Buildings; Aircraft; Software and Automation; Human Factors; Chart Or Publication; Airspace Structure
While on a leg from ZZZ1 to ZZZ2; my EFIS(Electronic Flight Instrument System) had a partial failure and while troubleshooting the issue; I inadvertently flew into ELP's Class C airspace. The GPS of the EFIS stopped working and in my installation; this GPS is the only source of position data. So when the failure occurred I was no longer able to see my position on the electronic moving map that I rely on for instantaneous position data. To help avoid this in the future; I will obtain a secondary source for instantaneous position data. After my initial troubleshooting failed to solve the problem (cycling avionics power) I began visually searching for landmarks to determine my position on a sectional chart; but by the time I determined my position (it took me several minutes since it was mostly desert) I had already flown in and out of ELP's Class C.
A light sport aircraft pilot reported loss of GPS signal.