<< >> NASA ASRS Report 711699, September 2006

A pilot on a VFR flight to twf entered unforecast IFR conditions. He advised ATC who cleared him to a VOR approach and subsequent landing at twf.

Attributes
ACN	711699
Time
Date	200609
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : zlc.artcc
State Reference	UT
Altitude	msl single value : 11500
Environment
Flight Conditions	IMC
Weather Elements	Rain Turbulence
Light	Night
Aircraft 1
Controlling Facilities	artcc : zlc.artcc
Operator	general aviation : instructional
Make Model Name	Small Aircraft High Wing 1 Eng Fixed Gear
Operating Under FAR Part	Part 91
Flight Phase	cruise : level
Flight Plan	VFR
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : multi engine pilot : instrument pilot : private
Experience	flight time last 90 days : 30 flight time total : 3700 flight time type : 1000
ASRS Report	711699
Person 2
Affiliation	government : faa
Function	controller : radar
Events
Anomaly	inflight encounter : vfr in imc non adherence : far
Independent Detector	other flight crewa
Resolutory Action	controller : issued new clearance none taken : detected after the fact
Supplementary
Problem Areas	Weather Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

Flying VFR from santa flight engineer; NM; to twin falls. WX not reported IFR. Clear from santa flight engineer past slc. Approximately 60 mi from twf; entered IMC. When I realized that I was IMC; I reported such to center; and they cleared me to land VOR approach at twf. At time I entered IMC; I was flying with flight following. As it was nighttime; over an unpopulated mountainous area; I did not realize that I had entered an unrpted IMC/IFR condition. I broke out at about 8000 ft MSL.

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Original NASA ASRS Text

Title: A PLT ON A VFR FLT TO TWF ENTERED UNFORECAST IFR CONDITIONS. HE ADVISED ATC WHO CLRED HIM TO A VOR APCH AND SUBSEQUENT LNDG AT TWF.

Narrative: FLYING VFR FROM SANTA FE; NM; TO TWIN FALLS. WX NOT RPTED IFR. CLR FROM SANTA FE PAST SLC. APPROX 60 MI FROM TWF; ENTERED IMC. WHEN I REALIZED THAT I WAS IMC; I RPTED SUCH TO CTR; AND THEY CLRED ME TO LAND VOR APCH AT TWF. AT TIME I ENTERED IMC; I WAS FLYING WITH FLT FOLLOWING. AS IT WAS NIGHTTIME; OVER AN UNPOPULATED MOUNTAINOUS AREA; I DID NOT REALIZE THAT I HAD ENTERED AN UNRPTED IMC/IFR CONDITION. I BROKE OUT AT ABOUT 8000 FT MSL.

Data retrieved from NASA's ASRS site as of January 2009 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.