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C152 and C172 in traffic pattern had a near midair collision with one of the aircraft doing a go around. Reporter aircraft was not involved, but sent report as an observer.
| Attributes | |
| ACN | 348767 |
| Time | |
| Date | 199610 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : sna |
| State Reference | CA |
| Altitude | msl bound lower : 600 msl bound upper : 600 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : sna |
| Operator | general aviation : personal |
| Make Model Name | Cessna 152 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | descent : approach |
| Flight Plan | None |
| Aircraft 2 | |
| Operator | general aviation : personal |
| Make Model Name | Skyhawk 172/Cutlass 172 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | descent : approach |
| Flight Plan | None |
| Person 1 | |
| Affiliation | Other |
| Function | instruction : instructor |
| Qualification | pilot : instrument pilot : cfi pilot : commercial |
| Experience | flight time last 90 days : 45 flight time total : 620 flight time type : 100 |
| ASRS Report | 348767 |
| Person 2 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : private |
| Events | |
| Anomaly | conflict : nmac other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : took evasive action other |
| Consequence | faa : reviewed incident with flight crew |
| Miss Distance | horizontal : 100 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Situations | |
| ATC Facility | procedure or policy : unspecified |
Narrative:
I was flying right seat in a C152 with a student pilot flying left closed traffic for runway 19L. On base for runway 19L we heard a C172 be cleared for a straight-in to runway 19L. We were already following another aircraft (152?) on base for runway 19L. As the C172 (#2) was too close behind the C152 it began to execute s-turns to increase separation. It then appeared that the C152 began to s-turn for collision avoidance possibly to look for the C172. With both aircraft cranking and banking after only 3 or 4 banks each, they had an near midair collision. #1 landed, #2 went around, then we landed. On the ground we heard the airplane query the tower and I think they reported coming within 100 ft.
Original NASA ASRS Text
Title: C152 AND C172 IN TFC PATTERN HAD A NMAC WITH ONE OF THE ACFT DOING A GAR. RPTR ACFT WAS NOT INVOLVED, BUT SENT RPT AS AN OBSERVER.
Narrative: I WAS FLYING R SEAT IN A C152 WITH A STUDENT PLT FLYING L CLOSED TFC FOR RWY 19L. ON BASE FOR RWY 19L WE HEARD A C172 BE CLRED FOR A STRAIGHT-IN TO RWY 19L. WE WERE ALREADY FOLLOWING ANOTHER ACFT (152?) ON BASE FOR RWY 19L. AS THE C172 (#2) WAS TOO CLOSE BEHIND THE C152 IT BEGAN TO EXECUTE S-TURNS TO INCREASE SEPARATION. IT THEN APPEARED THAT THE C152 BEGAN TO S-TURN FOR COLLISION AVOIDANCE POSSIBLY TO LOOK FOR THE C172. WITH BOTH ACFT CRANKING AND BANKING AFTER ONLY 3 OR 4 BANKS EACH, THEY HAD AN NMAC. #1 LANDED, #2 WENT AROUND, THEN WE LANDED. ON THE GND WE HEARD THE AIRPLANE QUERY THE TWR AND I THINK THEY RPTED COMING WITHIN 100 FT.
Data retrieved from NASA's ASRS site as of July 2007 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.