In-flight WX encounter stalled aircraft with relatively large altitude loss.

Attributes
ACN	111120
Time
Date	198905
Day	Tue
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : llc
State Reference	NV
Altitude	msl bound lower : 11000 msl bound upper : 16000
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zoa
Make Model Name	Small Aircraft, Low Wing, 1 Eng, Retractable Gear
Flight Phase	climbout : intermediate altitude other
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : atp
Experience	flight time last 90 days : 80 flight time total : 2300 flight time type : 18
ASRS Report	111120
Person 2
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Events
Anomaly	inflight encounter : weather non adherence : clearance other anomaly other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : regained aircraft control flight crew : declared emergency none taken : unable
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Fly west on V6 in an small aircraft not equipped for known ice. Trw's forced a northerly deviation. Around the trw I turned to reno and started to climb from 12,000' to 16,000' to the top of the cumulus buildups. Climbing through 14,000' IMC 1/2' rime ice was picked up but since PIREPS indicated I was over half way through the clouds and I was close to the top, I continued. At 16,000' I was in and out of the tops and ice buildup was very slow. With 1/2-3/4' rime ice at 16,000' the aircraft stalled IMC and lost 4000' altitude. After recovery a VMC hole was found, I continued down below the 12,000' MEA. VMC cancelled IFR and continued to reno. At 14,000' it was 9 degrees, I thought going up. It would be cold enough for the ice to not form, this was not the case and a 180 degree turn to VMC to the north might have worked better.

Original NASA ASRS Text

Title: INFLT WX ENCOUNTER STALLED ACFT WITH RELATIVELY LARGE ALT LOSS.

Narrative: FLY WEST ON V6 IN AN SMA NOT EQUIPPED FOR KNOWN ICE. TRW'S FORCED A NORTHERLY DEVIATION. AROUND THE TRW I TURNED TO RENO AND STARTED TO CLIMB FROM 12,000' TO 16,000' TO THE TOP OF THE CUMULUS BUILDUPS. CLIMBING THROUGH 14,000' IMC 1/2' RIME ICE WAS PICKED UP BUT SINCE PIREPS INDICATED I WAS OVER HALF WAY THROUGH THE CLOUDS AND I WAS CLOSE TO THE TOP, I CONTINUED. AT 16,000' I WAS IN AND OUT OF THE TOPS AND ICE BUILDUP WAS VERY SLOW. WITH 1/2-3/4' RIME ICE AT 16,000' THE ACFT STALLED IMC AND LOST 4000' ALT. AFTER RECOVERY A VMC HOLE WAS FOUND, I CONTINUED DOWN BELOW THE 12,000' MEA. VMC CANCELLED IFR AND CONTINUED TO RENO. AT 14,000' IT WAS 9 DEGREES, I THOUGHT GOING UP. IT WOULD BE COLD ENOUGH FOR THE ICE TO NOT FORM, THIS WAS NOT THE CASE AND A 180 DEG TURN TO VMC TO THE NORTH MIGHT HAVE WORKED BETTER.

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.