|37000 Feet||Browse and search NASA's
Aviation Safety Reporting System
|Local Time Of Day||1801 To 2400|
|Locale Reference||atc facility : hec|
|Altitude||msl bound lower : 18500|
msl bound upper : 20000
|Controlling Facilities||artcc : zla|
|Operator||general aviation : corporate|
|Make Model Name||Small Transport, Low Wing, 2 Recip Eng|
|Flight Phase||cruise other|
|Route In Use||enroute airway : zla|
|Function||flight crew : single pilot|
|Qualification||pilot : private|
pilot : instrument
|Experience||flight time last 90 days : 60|
flight time total : 1630
flight time type : 290
|Affiliation||government : faa|
|Function||controller : radar|
|Qualification||controller : radar|
|Anomaly||altitude deviation : excursion from assigned altitude|
inflight encounter : weather
non adherence : clearance
other spatial deviation
|Independent Detector||other controllera|
|Resolutory Action||none taken : detected after the fact|
|Primary Problem||Flight Crew Human Performance|
|Air Traffic Incident||Pilot Deviation|
On a flight (IFR) from slc to lgb at the above location and altitude, we encountered severe turbulence and icing in an embedded storm. My radios were rendered ineffective both navigation and communication and the autoplt wouldn't hold. I transmitted my situation and possible deviation but received no reply. To get out of the cell I turned to a heading of 070 degrees but the altitude loss was approximately 1500'. When the radios became operative the controller was upset because of the deviation. It was a judgement decision, I knew there was clear air at a heading of 070 degrees. I did not know what was straight ahead because nothing was showing on my radar or storm scope and yet I was in this turbulence, icing situation.
Original NASA ASRS Text
Title: DEVIATION FROM CLRNC WHEN AREA OF ICING AND TURBULENCE ENCOUNTERED.
Narrative: ON A FLT (IFR) FROM SLC TO LGB AT THE ABOVE LOCATION AND ALT, WE ENCOUNTERED SEVERE TURB AND ICING IN AN EMBEDDED STORM. MY RADIOS WERE RENDERED INEFFECTIVE BOTH NAV AND COM AND THE AUTOPLT WOULDN'T HOLD. I XMITTED MY SITUATION AND POSSIBLE DEVIATION BUT RECEIVED NO REPLY. TO GET OUT OF THE CELL I TURNED TO A HDG OF 070 DEGS BUT THE ALT LOSS WAS APPROX 1500'. WHEN THE RADIOS BECAME OPERATIVE THE CTLR WAS UPSET BECAUSE OF THE DEVIATION. IT WAS A JUDGEMENT DECISION, I KNEW THERE WAS CLEAR AIR AT A HDG OF 070 DEGS. I DID NOT KNOW WHAT WAS STRAIGHT AHEAD BECAUSE NOTHING WAS SHOWING ON MY RADAR OR STORM SCOPE AND YET I WAS IN THIS TURB, ICING SITUATION.
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.