<< >> NASA ASRS Report 359330, January 1997

C152 private pilot performs an unauthorized penetration of airspace when loss of aircraft control is experienced due to in-flight encounter with turbulence.

Attributes
ACN	359330
Time
Date	199701
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : sna
State Reference	CA
Altitude	msl bound lower : 4000 msl bound upper : 4400
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : lax
Operator	general aviation : personal
Make Model Name	Cessna 152
Operating Under FAR Part	Part 91
Flight Phase	climbout : intermediate altitude cruise other descent other
Flight Plan	None
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : private
Experience	flight time last 90 days : 4 flight time total : 134 flight time type : 122
ASRS Report	359330
Events
Anomaly	inflight encounter other non adherence : published procedure non adherence : far other anomaly other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : exited adverse environment flight crew : exited penetrated airspace flight crew : regained aircraft control
Consequence	Other
Supplementary
Primary Problem	Weather
Air Traffic Incident	Pilot Deviation other

Narrative:

I was descending over class C airspace in light to moderate turbulence. I attempted to level off well above the class C 4400 ft ceiling, but full power in a climbing attitude was still producing a descent. My altimeter needle was bouncing around 4400 ft prior to being able to climb out of the descending air. I am concerned that I may have entered the class C airspace without communications during this event. I have had little experience in turbulent conditions such as those I encountered this day. To prevent a recurrence, I will allow for such altdevs in these conditions and communicate with ATC if near their airspace.

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Original NASA ASRS Text

Title: C152 PVT PLT PERFORMS AN UNAUTH PENETRATION OF AIRSPACE WHEN LOSS OF ACFT CTL IS EXPERIENCED DUE TO INFLT ENCOUNTER WITH TURB.

Narrative: I WAS DSNDING OVER CLASS C AIRSPACE IN LIGHT TO MODERATE TURB. I ATTEMPTED TO LEVEL OFF WELL ABOVE THE CLASS C 4400 FT CEILING, BUT FULL PWR IN A CLBING ATTITUDE WAS STILL PRODUCING A DSCNT. MY ALTIMETER NEEDLE WAS BOUNCING AROUND 4400 FT PRIOR TO BEING ABLE TO CLB OUT OF THE DSNDING AIR. I AM CONCERNED THAT I MAY HAVE ENTERED THE CLASS C AIRSPACE WITHOUT COMS DURING THIS EVENT. I HAVE HAD LITTLE EXPERIENCE IN TURBULENT CONDITIONS SUCH AS THOSE I ENCOUNTERED THIS DAY. TO PREVENT A RECURRENCE, I WILL ALLOW FOR SUCH ALTDEVS IN THESE CONDITIONS AND COMMUNICATE WITH ATC IF NEAR THEIR AIRSPACE.

Data retrieved from NASA's ASRS site as of July 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.