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Pilot of an small aircraft sel private aircraft on an IFR flight plan, VFR on top, made a 180 degree turn because approaching WX prior to receiving a clearance.
| Attributes | |
| ACN | 261669 |
| Time | |
| Date | 199401 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : eni |
| State Reference | CA |
| Altitude | msl bound lower : 11000 msl bound upper : 11000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | general aviation : personal |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise other |
| Route In Use | enroute airway : v27 |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : cfi pilot : instrument pilot : flight engineer pilot : commercial pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 6500 flight time type : 100 |
| ASRS Report | 261669 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Events | |
| Anomaly | inflight encounter : weather non adherence : clearance non adherence : far other spatial deviation |
| Independent Detector | other flight crewa |
| Resolutory Action | controller : issued new clearance none taken : anomaly accepted |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Weather |
| Air Traffic Incident | Pilot Deviation |
Narrative:
I was proceeding sebound on V-27 at 11000 ft on an IFR flight plan in VFR conditions (over the top of the WX). Approaching eni VOR, the tops began to build rapidly to the south, so I informed center that I needed a turn of 180 degrees and a clearance back to my departure airport, acv. I was told to stand by, but could not wait for the clearance due to the WX approaching. I then received my clearance back to acv on V-27 at 10000 ft and informed center that I had already started my 180 degree turn back towards aircraft. I felt the WX changed dramatically, and I was forced to start my turn without a clearance so as to avoid entering IMC with freezing levels at 4000 ft and an outside air temperature of 12 degrees F at my altitude of 11000 ft MSL. With 4 passenger and a heavy single engine aircraft, I did not want to enter the clouds/moisture and raise the possibility of icing up over the mountains.
Original NASA ASRS Text
Title: PLT OF AN SMA SEL PVT ACFT ON AN IFR FLT PLAN, VFR ON TOP, MADE A 180 DEG TURN BECAUSE APCHING WX PRIOR TO RECEIVING A CLRNC.
Narrative: I WAS PROCEEDING SEBOUND ON V-27 AT 11000 FT ON AN IFR FLT PLAN IN VFR CONDITIONS (OVER THE TOP OF THE WX). APCHING ENI VOR, THE TOPS BEGAN TO BUILD RAPIDLY TO THE S, SO I INFORMED CTR THAT I NEEDED A TURN OF 180 DEGS AND A CLRNC BACK TO MY DEP ARPT, ACV. I WAS TOLD TO STAND BY, BUT COULD NOT WAIT FOR THE CLRNC DUE TO THE WX APCHING. I THEN RECEIVED MY CLRNC BACK TO ACV ON V-27 AT 10000 FT AND INFORMED CTR THAT I HAD ALREADY STARTED MY 180 DEG TURN BACK TOWARDS ACFT. I FELT THE WX CHANGED DRAMATICALLY, AND I WAS FORCED TO START MY TURN WITHOUT A CLRNC SO AS TO AVOID ENTERING IMC WITH FREEZING LEVELS AT 4000 FT AND AN OUTSIDE AIR TEMP OF 12 DEGS F AT MY ALT OF 11000 FT MSL. WITH 4 PAX AND A HVY SINGLE ENG ACFT, I DID NOT WANT TO ENTER THE CLOUDS/MOISTURE AND RAISE THE POSSIBILITY OF ICING UP OVER THE MOUNTAINS.
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.