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Pilot reported being informed of a near midair collision; by an eye witness; after the flight was complete.
| Attributes | |
| ACN | 1757988 |
| Time | |
| Date | 202008 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Small Aircraft |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Final Approach |
| Component | |
| Aircraft Component | Communication Systems |
| Person 1 | |
| Function | Single Pilot |
| Qualification | Flight Crew Private |
| Experience | Flight Crew Last 90 Days 10 Flight Crew Total 1950 Flight Crew Type 1320 |
| Events | |
| Anomaly | Conflict NMAC Deviation - Procedural Published Material / Policy |
Narrative:
I departed ZZZ1 for a short VFR flight via pilotage to ZZZ for a full stop landing. Departed ZZZ1 using CTAF 122.725. Enroute I switched to ZZZ CTAF 122.7 and monitored [the] frequency. Reported my position 5 miles out; entering downwind; downwind; base; final; and clear of the active. Did not see or hear conflicting traffic.later flew from ZZZ to ZZZ2 for lunch and return. Upon engine start [discovered] radio still tuned to 122.725 for ZZZ1. Left aircraft at ZZZ for scheduled annual inspection. Got automobile ride back to ZZZ1 with a friend. Upon reaching ZZZ1 by car; another pilot alleged that I had flown 100 ft. Above a trainer [aircraft] operated by [a flight school] in the pattern while landing at ZZZ. I did not see or hear radio calls from conflicting traffic.I believe that a contributing factor was that the radio was still tuned to 122.725 ZZZ1 CTAF instead of ZZZ frequency; which still displayed on the stand-by frequency. Either I had failed to press the button to 'flip' the frequency between active and standby; or in turbulent air pressed the button twice. Corrective action is to double check frequency change after entering frequency. Make sure [the] frequency change was actually accomplished.
Original NASA ASRS Text
Title: Pilot reported being informed of a NMAC; by an eye witness; after the flight was complete.
Narrative: I departed ZZZ1 for a short VFR flight via pilotage to ZZZ for a full stop landing. Departed ZZZ1 using CTAF 122.725. Enroute I switched to ZZZ CTAF 122.7 and monitored [the] frequency. Reported my position 5 miles out; entering downwind; downwind; base; final; and clear of the active. Did not see or hear conflicting traffic.Later flew from ZZZ to ZZZ2 for lunch and return. Upon engine start [discovered] radio still tuned to 122.725 for ZZZ1. Left aircraft at ZZZ for scheduled annual inspection. Got automobile ride back to ZZZ1 with a friend. Upon reaching ZZZ1 by car; another pilot alleged that I had flown 100 ft. above a trainer [aircraft] operated by [a flight school] in the pattern while landing at ZZZ. I did not see or hear radio calls from conflicting traffic.I believe that a contributing factor was that the radio was still tuned to 122.725 ZZZ1 CTAF instead of ZZZ frequency; which still displayed on the stand-by frequency. Either I had failed to press the button to 'flip' the frequency between active and standby; or in turbulent air pressed the button twice. Corrective action is to double check frequency change after entering frequency. Make sure [the] frequency change was actually accomplished.
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.