Narrative:

While established in stanfield holding for a GPS approach to RWY5 at cgz in 4;500 ft MSL we experienced an near midair collision with [another] aircraft while reaching the holding fix on the inbound leg. The instructor trainee was under the foggles at this time. The safety pilot/instructor took control of the aircraft and performed an evasive climbing maneuver to de-conflict vertically and laterally. The closest distance between the two aircraft was estimated approximately 100 feet. 4;000 ft MSL and 3;500 ft MSL were initially occupied by other aircraft. The [other] aircraft was initially planning to enter the holding in 5;000 ft MSL. After 4;000 ft MSL had been cleared the [other] aircraft entered a descent from 5;000 ft MSL to 4;000 ft MSL. While doing that it crossed our flight path directly over the VOR in 4;500 ft MSL without any further coordination with us. After de-confliction was established; all aircraft took their planned altitudes. We continued our flight as planned.

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Original NASA ASRS Text

Title: GA instructor pilot reported a NMAC with another light aircraft in the vicinity of CGZ airport.

Narrative: While established in Stanfield holding for a GPS Approach to RWY5 at CGZ in 4;500 FT MSL we experienced an NMAC with [another] aircraft while reaching the holding fix on the inbound leg. The instructor trainee was under the foggles at this time. The safety pilot/instructor took control of the aircraft and performed an evasive climbing maneuver to de-conflict vertically and laterally. The closest distance between the two aircraft was estimated approximately 100 feet. 4;000 FT MSL and 3;500 FT MSL were initially occupied by other aircraft. The [other] aircraft was initially planning to enter the Holding in 5;000 FT MSL. After 4;000 FT MSL had been cleared the [other] aircraft entered a descent from 5;000 FT MSL to 4;000 FT MSL. While doing that it crossed our flight path directly over the VOR in 4;500 FT MSL without any further coordination with us. After de-confliction was established; all aircraft took their planned altitudes. We continued our flight as planned.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.