Bonanza 35
Flight Crew Instrument; Flight Crew Private
Flight Crew Last 90 Days 16; Flight Crew Total 693; Flight Crew Type 131
ATC Issue All Types; Aircraft Equipment Problem Less Severe; Inflight Event / Encounter Other / Unknown
Aircraft Equipment Problem Dissipated
Procedure
Loss of GPS signal and primary navigation equipment while in flight. Signal was lost twice and service restored within 10 minutes. Longest duration of outage was 5 minutes. Loss of primary GPS navigation was reported to RFD Approach. After discussing this with other local airmen; I believe there may be a source of interference in this area. Another pilot reported loss of GPS while en route at low altitude through this same area.
The reporter states that the area in question is mostly farmland with no large structures or other possible sources of interference in the area. The interference detected by another pilot was on a different date but in the same area.
BE35 pilot reports a loss of GPS signal at 5;000 FT in the vecinity of RFD. Discussions with other local airmen indicate that there may be a source of interference in this area near SIMMN Intersection.