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Small transport pilot did not follow controller issued clearance to avoid flight into a thunderstorm in day class east airspace.
| Attributes | |
| ACN | 547273 |
| Time | |
| Date | 200205 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | navaid : rod.vortac |
| State Reference | OH |
| Altitude | msl single value : 6000 |
| Environment | |
| Flight Conditions | Mixed |
| Weather Elements | Thunderstorm other |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : day.tracon |
| Operator | general aviation : corporate |
| Make Model Name | Small Transport, Low Wing, 2 Turboprop Eng |
| Operating Under FAR Part | Part 91 |
| Navigation In Use | other other vortac |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : corporate |
| Function | flight crew : single pilot |
| Qualification | pilot : atp pilot : cfi pilot : multi engine |
| Experience | flight time last 90 days : 150 flight time total : 26000 flight time type : 3000 |
| ASRS Report | 547273 |
| Person 2 | |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | inflight encounter : weather inflight encounter other non adherence : clearance other anomaly other other spatial deviation |
| Independent Detector | other flight crewa |
| Resolutory Action | controller : issued new clearance |
| Consequence | faa : reviewed incident with flight crew |
| Miss Distance | horizontal : 36000 |
| Supplementary | |
| Problem Areas | Weather Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
We were authority/authorized to deviate from a southerly course eastbound to avoid a WX return -- a visual sighting of a thunderstorm which was contouring on radar and displaying moderate virga. Dayton approach assigned a heading of 210 degrees which we queried for alternate or delayed turn to avoid WX. Controller insisted we turn immediately. I turned left towards a course reversal as the frequency was then congested and we had excellent visibility to the east. Any westerly turn would have placed the aircraft in IMC. I later spoke to supervisor who stated we were always 6 NM from traffic.
Original NASA ASRS Text
Title: SMT PLT DID NOT FOLLOW CTLR ISSUED CLRNC TO AVOID FLT INTO A TSTM IN DAY CLASS E AIRSPACE.
Narrative: WE WERE AUTH TO DEVIATE FROM A SOUTHERLY COURSE EBOUND TO AVOID A WX RETURN -- A VISUAL SIGHTING OF A TSTM WHICH WAS CONTOURING ON RADAR AND DISPLAYING MODERATE VIRGA. DAYTON APCH ASSIGNED A HDG OF 210 DEGS WHICH WE QUERIED FOR ALTERNATE OR DELAYED TURN TO AVOID WX. CTLR INSISTED WE TURN IMMEDIATELY. I TURNED L TOWARDS A COURSE REVERSAL AS THE FREQ WAS THEN CONGESTED AND WE HAD EXCELLENT VISIBILITY TO THE E. ANY WESTERLY TURN WOULD HAVE PLACED THE ACFT IN IMC. I LATER SPOKE TO SUPVR WHO STATED WE WERE ALWAYS 6 NM FROM 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.