Narrative:

[Aircraft] was in a hold at 3;000 feet after leaving the GPS 18 missed approach at airport ZZZ; the pilot noticed aircraft approaching from the north east descending on an approximate heading of 220. Separation 100 feet [vertically] at first sighting and time of 10 seconds or less. Descended to 2900 feet as [other aircraft] passed over top and in front of aircraft.

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Original NASA ASRS Text

Title: A flight instructor in a C172 reports taking evasive action following a near-mid-air-collision while in a practice holding pattern.

Narrative: [Aircraft] was in a hold at 3;000 feet after leaving the GPS 18 missed approach at Airport ZZZ; the pilot noticed aircraft approaching from the north east descending on an approximate heading of 220. Separation 100 feet [vertically] at first sighting and time of 10 seconds or less. Descended to 2900 feet as [other aircraft] passed over top and in front of aircraft.

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.