Loss of aircraft control after in-flight encounter with downdraft. Unauthorized penetration of airsp...

Attributes
ACN	267456
Time
Date	199404
Day	Sun
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : tyk
State Reference	CA
Altitude	msl bound lower : 6500 msl bound upper : 7500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : edw
Operator	general aviation : personal
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 91
Flight Phase	cruise other
Route In Use	enroute : direct
Flight Plan	None
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : commercial pilot : instrument pilot : atp
Experience	flight time last 90 days : 30 flight time total : 6500 flight time type : 2300
ASRS Report	267456
Person 2
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
Events
Anomaly	inflight encounter other non adherence : published procedure non adherence : far other anomaly other anomaly other
Independent Detector	other flight crewa
Resolutory Action	controller : issued new clearance flight crew : regained aircraft control other
Consequence	Other
Supplementary
Primary Problem	Weather
Air Traffic Incident	Pilot Deviation

Narrative:

On apr/sun/94 at XA15 am, I was approximately 18 mi nnw of the inyokern airport following the west side of highway 395 towards the inyokern airport when my aircraft encountered moderate to severe turbulence and strong downdrafts of 2000 FPM. I immediately turned the aircraft to the east away from the mountain range and climbed to 7500 ft. When my flight conditions enabled me to contact joshua approach control for advisory, the controller stated that I had entered 1 mi into restr area 2505 and instructed me to turn to a westerly heading to exit R2505. By this time the turbulence had subsided to moderate and I was able to comply with the instructions received from the controller. I continued my climb to 11500 and was cleared to transition restr area 2515 direct to my destination airport, french valley. I realized that my aircraft was close to the westerly boundary of restr area 2505. However, I felt that it was necessary to turn the aircraft away from the mountains and escape the severe turbulence and strong downdrafts. The safety of the aircraft and the passenger aboard was my major concern and responsibility.

Original NASA ASRS Text

Title: LOSS OF ACFT CTL AFTER INFLT ENCOUNTER WITH DOWNDRAFT. UNAUTH PENETRATION OF AIRSPACE.

Narrative: ON APR/SUN/94 AT XA15 AM, I WAS APPROX 18 MI NNW OF THE INYOKERN ARPT FOLLOWING THE W SIDE OF HWY 395 TOWARDS THE INYOKERN ARPT WHEN MY ACFT ENCOUNTERED MODERATE TO SEVERE TURB AND STRONG DOWNDRAFTS OF 2000 FPM. I IMMEDIATELY TURNED THE ACFT TO THE E AWAY FROM THE MOUNTAIN RANGE AND CLBED TO 7500 FT. WHEN MY FLT CONDITIONS ENABLED ME TO CONTACT JOSHUA APCH CTL FOR ADVISORY, THE CTLR STATED THAT I HAD ENTERED 1 MI INTO RESTR AREA 2505 AND INSTRUCTED ME TO TURN TO A WESTERLY HDG TO EXIT R2505. BY THIS TIME THE TURB HAD SUBSIDED TO MODERATE AND I WAS ABLE TO COMPLY WITH THE INSTRUCTIONS RECEIVED FROM THE CTLR. I CONTINUED MY CLB TO 11500 AND WAS CLRED TO TRANSITION RESTR AREA 2515 DIRECT TO MY DEST ARPT, FRENCH VALLEY. I REALIZED THAT MY ACFT WAS CLOSE TO THE WESTERLY BOUNDARY OF RESTR AREA 2505. HOWEVER, I FELT THAT IT WAS NECESSARY TO TURN THE ACFT AWAY FROM THE MOUNTAINS AND ESCAPE THE SEVERE TURB AND STRONG DOWNDRAFTS. THE SAFETY OF THE ACFT AND THE PAX ABOARD WAS MY MAJOR CONCERN AND RESPONSIBILITY.

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.

Loss of aircraft control after in-flight encounter with downdraft. Unauthorized penetration of airspace.