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Aircraft on a VOR approach with clearance to land has an near midair collision with a C172 in the traffic pattern. Reporter believes that the controller transposed call signs and cleared the wrong aircraft to land.
| Attributes | |
| ACN | 392285 |
| Time | |
| Date | 199801 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : msn |
| State Reference | WI |
| Environment | |
| Flight Conditions | Marginal |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : msn |
| Operator | general aviation : personal |
| Make Model Name | Skyhawk 172/Cutlass 172 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Skyhawk 172/Cutlass 172 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | landing other |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : instrument |
| Experience | flight time last 90 days : 100 flight time total : 320 flight time type : 320 |
| ASRS Report | 392285 |
| Person 2 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Events | |
| Anomaly | conflict : nmac non adherence : published procedure non adherence : far |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : took evasive action other |
| Consequence | faa : reviewed incident with flight crew |
| Miss Distance | horizontal : 50 vertical : 50 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
Narrative:
I was flying a VOR runway 31 approach on an IFR flight plan under a low ceiling. I was cleared to land and proceeded inbound. I was not aware of another aircraft in the pattern. However, another C172RG was doing touch and goes. He spotted me while turning from base to final and took action to avoid a collision. I became aware of his presence only by his radio call for a go around. The other pilot brought this incident to the tower manager's attention. A review of the tapes revealed that the controller mistook my aircraft for the aircraft in the pattern. He cleared my aircraft number not realizing there was another plane in the pattern on downwind. However, the other plane had been in the pattern and I was completing an IFR approach. They did not admit a mistake. The north numbers were not at all similar, nor were the squawks, IFR and 1200. Factors involved: low visibility and ceilings. Both pilots practicing procedures and not 'outside' aircraft. Complacency of controller on a slow day. Mixed IFR/VFR traffic.
Original NASA ASRS Text
Title: ACFT ON A VOR APCH WITH CLRNC TO LAND HAS AN NMAC WITH A C172 IN THE TFC PATTERN. RPTR BELIEVES THAT THE CTLR TRANSPOSED CALL SIGNS AND CLRED THE WRONG ACFT TO LAND.
Narrative: I WAS FLYING A VOR RWY 31 APCH ON AN IFR FLT PLAN UNDER A LOW CEILING. I WAS CLRED TO LAND AND PROCEEDED INBOUND. I WAS NOT AWARE OF ANOTHER ACFT IN THE PATTERN. HOWEVER, ANOTHER C172RG WAS DOING TOUCH AND GOES. HE SPOTTED ME WHILE TURNING FROM BASE TO FINAL AND TOOK ACTION TO AVOID A COLLISION. I BECAME AWARE OF HIS PRESENCE ONLY BY HIS RADIO CALL FOR A GAR. THE OTHER PLT BROUGHT THIS INCIDENT TO THE TWR MGR'S ATTN. A REVIEW OF THE TAPES REVEALED THAT THE CTLR MISTOOK MY ACFT FOR THE ACFT IN THE PATTERN. HE CLRED MY ACFT NUMBER NOT REALIZING THERE WAS ANOTHER PLANE IN THE PATTERN ON DOWNWIND. HOWEVER, THE OTHER PLANE HAD BEEN IN THE PATTERN AND I WAS COMPLETING AN IFR APCH. THEY DID NOT ADMIT A MISTAKE. THE N NUMBERS WERE NOT AT ALL SIMILAR, NOR WERE THE SQUAWKS, IFR AND 1200. FACTORS INVOLVED: LOW VISIBILITY AND CEILINGS. BOTH PLTS PRACTICING PROCS AND NOT 'OUTSIDE' ACFT. COMPLACENCY OF CTLR ON A SLOW DAY. MIXED IFR/VFR TFC.
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.