|37000 Feet||Browse and search NASA's
Aviation Safety Reporting System
|Local Time Of Day||1201 To 1800|
|Locale Reference||atc facility : slc|
|Altitude||agl bound lower : 0|
agl bound upper : 0
|Operator||general aviation : personal|
|Make Model Name||Small Transport, Low Wing, 2 Recip Eng|
|Flight Phase||ground other : taxi|
|Function||flight crew : single pilot|
|Qualification||pilot : instrument|
pilot : private
|Experience||flight time last 90 days : 50|
flight time total : 3500
flight time type : 1000
|Affiliation||government : faa|
|Function||controller : ground|
|Qualification||controller : non radar|
|Anomaly||incursion : runway|
non adherence : clearance
|Independent Detector||other flight crewa|
|Resolutory Action||flight crew : became reoriented|
|Primary Problem||Flight Crew Human Performance|
|Air Traffic Incident||Pilot Deviation|
Ground control cleared me to taxi from ramp to runway 34R. Ramp area, taxiway and runway had varying amounts of snow. Taxiway signs were half covered with snow. I taxied west and turned south on what I thought was the taxiway. After some 50 yards, I thought I saw what appeared to be partially obscured (by snow) threshold markings. I immediately called ground control to confirm whether I was on the taxiway or the runway. After some delay, they verified that I was on the runway. There was a light twin on a two mile final, and I was able to taxi another 50 yards to the final taxiway exit to clear the active. The aircraft on final did not have to take any evasive action. My inadvertently taxiing onto active runway was caused by snow which made it unclear which area was ramp, taxiway, or runway. There appeared to be no other taxiway available to me when I was departing the ramp area which was almost completely covered with snow.
Original NASA ASRS Text
Title: TAXI ONTO ACTIVE RWY, SNOW.
Narrative: GND CTL CLRED ME TO TAXI FROM RAMP TO RWY 34R. RAMP AREA, TXWY AND RWY HAD VARYING AMOUNTS OF SNOW. TXWY SIGNS WERE HALF COVERED WITH SNOW. I TAXIED W AND TURNED S ON WHAT I THOUGHT WAS THE TXWY. AFTER SOME 50 YARDS, I THOUGHT I SAW WHAT APPEARED TO BE PARTIALLY OBSCURED (BY SNOW) THRESHOLD MARKINGS. I IMMEDIATELY CALLED GND CONTROL TO CONFIRM WHETHER I WAS ON THE TXWY OR THE RWY. AFTER SOME DELAY, THEY VERIFIED THAT I WAS ON THE RWY. THERE WAS A LIGHT TWIN ON A TWO MILE FINAL, AND I WAS ABLE TO TAXI ANOTHER 50 YARDS TO THE FINAL TXWY EXIT TO CLR THE ACTIVE. THE ACFT ON FINAL DID NOT HAVE TO TAKE ANY EVASIVE ACTION. MY INADVERTENTLY TAXIING ONTO ACTIVE RWY WAS CAUSED BY SNOW WHICH MADE IT UNCLEAR WHICH AREA WAS RAMP, TXWY, OR RWY. THERE APPEARED TO BE NO OTHER TXWY AVAILABLE TO ME WHEN I WAS DEPARTING THE RAMP AREA WHICH WAS ALMOST COMPLETELY COVERED WITH SNOW.
Data retrieved from NASA's ASRS site as of August 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.