|37000 Feet||Browse and search NASA's
Aviation Safety Reporting System
|Local Time Of Day||1201 To 1800|
|Locale Reference||atc facility : dqn|
|Altitude||msl bound lower : 11000|
msl bound upper : 12500
|Controlling Facilities||artcc : zid|
|Operator||general aviation : personal|
|Make Model Name||Small Aircraft, Low Wing, 1 Eng, Retractable Gear|
|Flight Phase||cruise other|
|Function||flight crew : single pilot|
|Qualification||pilot : private|
pilot : instrument
|Experience||flight time last 90 days : 120|
flight time total : 10000
|Affiliation||government : faa|
|Function||controller : radar|
|Qualification||controller : radar|
|Anomaly||altitude deviation : excursion from assigned altitude|
inflight encounter : weather
non adherence : clearance
|Independent Detector||other flight crewa|
|Resolutory Action||none taken : unable|
|Air Traffic Incident||Pilot Deviation|
Before the flight I received WX briefing. I was told light icing south of route. Pilot reports indicated 'trace of ice'. Leaving effingham, il, and climbing to 11,000', total instruments -- no sign of ice. Between dayton and columbus I met severe turbulence and severe icing. I entered an updraft shaft that took my aircraft 1200' above assigned altitude. Pulling the manifold pressure to 15' and lowering my nose I still continued going up the shaft. Minutes prior to incident center issued a SIGMET 1 regarding icing. After incident center asked my assigned altitude. I replied '11,000' but I was doing all I could to hold aircraft under control.'
Original NASA ASRS Text
Title: UPDRAFTS AND SEVERE TURBULENCE ENCOUNTERED WHICH CARRIED ACFT 1200' ABOVE ASSIGNED ALT. SIGMET ISSUED JUST PRIOR TO INCIDENT REGARDING ICING.
Narrative: BEFORE THE FLT I RECEIVED WX BRIEFING. I WAS TOLD LIGHT ICING SOUTH OF ROUTE. PLT REPORTS INDICATED 'TRACE OF ICE'. LEAVING EFFINGHAM, IL, AND CLIMBING TO 11,000', TOTAL INSTRUMENTS -- NO SIGN OF ICE. BETWEEN DAYTON AND COLUMBUS I MET SEVERE TURB AND SEVERE ICING. I ENTERED AN UPDRAFT SHAFT THAT TOOK MY ACFT 1200' ABOVE ASSIGNED ALT. PULLING THE MANIFOLD PRESSURE TO 15' AND LOWERING MY NOSE I STILL CONTINUED GOING UP THE SHAFT. MINUTES PRIOR TO INCIDENT CENTER ISSUED A SIGMET 1 REGARDING ICING. AFTER INCIDENT CENTER ASKED MY ASSIGNED ALT. I REPLIED '11,000' BUT I WAS DOING ALL I COULD TO HOLD ACFT UNDER CONTROL.'
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.