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C182 pilot, on an assigned route, misinterps avl controller's clearance to proceed direct to airport as clearance to descend from assigned altitude.
| Attributes | |
| ACN | 515520 |
| Time | |
| Date | 200106 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| State Reference | NC |
| Altitude | msl single value : 7000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : avl.tracon tower : atw.tower |
| Operator | general aviation : personal |
| Make Model Name | Skylane 182/RG Turbo Skylane/RG |
| Operating Under FAR Part | Part 91 |
| Flight Phase | descent : approach |
| Route In Use | approach : visual |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | other |
| Function | flight crew : single pilot |
| Qualification | pilot : multi engine pilot : flight engineer pilot : atp pilot : cfi pilot : commercial |
| Experience | flight time last 90 days : 75 flight time total : 12600 flight time type : 225 |
| ASRS Report | 515520 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude non adherence : clearance |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance controller : issued advisory |
| Consequence | faa : reviewed incident with flight crew |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance ATC Human Performance |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
IFR flight plan to uncontrolled airport (2nc0). Descended from cruise altitude (9000 ft) to 7000 ft with asheville approach. When asked by controller if I had airport in sight, I said that I had the 'approach' to the airport, ie, I could proceed visually. He then said that I could proceed to the airport visually. I then descended from 7000 ft for the landing, followed by a call from approach that I had not been cleared to leave my assigned altitude. I then canceled IFR and landed. There was no traffic conflict. The problem arose when I misinterped his clearance to proceed to the airport visually to mean I was cleared for the visual approach. Had he said 'proceed to the airport visually, maintain 7000 ft,' I would have understood his intent better. Also, I would have canceled IFR immediately to remain in VMC to the airport.
Original NASA ASRS Text
Title: C182 PLT, ON AN ASSIGNED RTE, MISINTERPS AVL CTLR'S CLRNC TO PROCEED DIRECT TO ARPT AS CLRNC TO DSND FROM ASSIGNED ALT.
Narrative: IFR FLT PLAN TO UNCTLED ARPT (2NC0). DSNDED FROM CRUISE ALT (9000 FT) TO 7000 FT WITH ASHEVILLE APCH. WHEN ASKED BY CTLR IF I HAD ARPT IN SIGHT, I SAID THAT I HAD THE 'APCH' TO THE ARPT, IE, I COULD PROCEED VISUALLY. HE THEN SAID THAT I COULD PROCEED TO THE ARPT VISUALLY. I THEN DSNDED FROM 7000 FT FOR THE LNDG, FOLLOWED BY A CALL FROM APCH THAT I HAD NOT BEEN CLRED TO LEAVE MY ASSIGNED ALT. I THEN CANCELED IFR AND LANDED. THERE WAS NO TFC CONFLICT. THE PROB AROSE WHEN I MISINTERPED HIS CLRNC TO PROCEED TO THE ARPT VISUALLY TO MEAN I WAS CLRED FOR THE VISUAL APCH. HAD HE SAID 'PROCEED TO THE ARPT VISUALLY, MAINTAIN 7000 FT,' I WOULD HAVE UNDERSTOOD HIS INTENT BETTER. ALSO, I WOULD HAVE CANCELED IFR IMMEDIATELY TO REMAIN IN VMC TO THE ARPT.
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.