Small transport jet aircraft in cruise encountered severe turbulence, windshear, wind of 132 KTS and...

Attributes
ACN	352690
Time
Date	199611
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : bwz
State Reference	NJ
Altitude	msl bound lower : 11700 msl bound upper : 14000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : corporate
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 91
Flight Phase	cruise other
Route In Use	enroute airway : zny
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 60 flight time total : 17800 flight time type : 300
ASRS Report	352690
Person 2
Affiliation	Other
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 65 flight time total : 12500 flight time type : 360
Events
Anomaly	altitude deviation : excursion from assigned altitude inflight encounter : weather non adherence : clearance other anomaly
Independent Detector	other flight crewa
Resolutory Action	flight crew : returned to intended course or assigned course flight crew : declared emergency flight crew : regained aircraft control
Consequence	faa : reviewed incident with flight crew
Supplementary
Primary Problem	Weather

Narrative:

On nov/xx/96 at approximately XA35Z severe turbulence and windshear were encountered which resulted in partial loss of control of the aircraft and loss of altitude of approximately 2000 ft. This situation resulted from a SID out of mmu en route to iad. WX at the time was a broken deck of clouds out of mmu at approximately 1700 ft, tops at 2400 ft. A higher overcast layer of clouds was estimated at FL300. A SID was made with radar vectors to parke intersection at an assigned altitude of 14000 ft. On departure, wind direction velocity was noted at 7000 ft of being 210 degrees at 63 KTS. At 12000 ft wind was 238 degrees at 74 KTS, light to occasionally moderate turbulence was encountered on climb out. Reaching 14000 ft at parke, severe turbulence and windshear were encountered. Wind direction and speed at that time was 248 degrees at 132 KTS. The aircraft began a descent and turned to the left which was uncontrollable with aileron and elevator. We requested from center a descent clearance. At one point there was a 50 KT fluctuation in airspeed noticed. The rapid descent was stopped at approximately 11700 ft. Center had eventually cleared us to 12000 ft. We climbed back to 12000 ft as assigned altitude and encountered light to moderate chop. We continued our trip uneventfully and contacted ZNY by phone to report the incident.

Original NASA ASRS Text

Title: SMT JET ACFT IN CRUISE ENCOUNTERED SEVERE TURB, WINDSHEAR, WIND OF 132 KTS AND FLC LOST CTL OF ACFT AS IT TURNED AND DSNDED 2300 FT. ATC WAS NOTIFIED, ACFT CONTINUED ON TO DEST AT A LOWER ALT.

Narrative: ON NOV/XX/96 AT APPROX XA35Z SEVERE TURB AND WINDSHEAR WERE ENCOUNTERED WHICH RESULTED IN PARTIAL LOSS OF CTL OF THE ACFT AND LOSS OF ALT OF APPROX 2000 FT. THIS SIT RESULTED FROM A SID OUT OF MMU ENRTE TO IAD. WX AT THE TIME WAS A BROKEN DECK OF CLOUDS OUT OF MMU AT APPROX 1700 FT, TOPS AT 2400 FT. A HIGHER OVCST LAYER OF CLOUDS WAS ESTIMATED AT FL300. A SID WAS MADE WITH RADAR VECTORS TO PARKE INTXN AT AN ASSIGNED ALT OF 14000 FT. ON DEP, WIND DIRECTION VELOCITY WAS NOTED AT 7000 FT OF BEING 210 DEGS AT 63 KTS. AT 12000 FT WIND WAS 238 DEGS AT 74 KTS, LIGHT TO OCCASIONALLY MODERATE TURB WAS ENCOUNTERED ON CLBOUT. REACHING 14000 FT AT PARKE, SEVERE TURB AND WINDSHEAR WERE ENCOUNTERED. WIND DIRECTION AND SPD AT THAT TIME WAS 248 DEGS AT 132 KTS. THE ACFT BEGAN A DSCNT AND TURNED TO THE L WHICH WAS UNCTLABLE WITH AILERON AND ELEVATOR. WE REQUESTED FROM CTR A DSCNT CLRNC. AT ONE POINT THERE WAS A 50 KT FLUCTUATION IN AIRSPD NOTICED. THE RAPID DSCNT WAS STOPPED AT APPROX 11700 FT. CTR HAD EVENTUALLY CLRED US TO 12000 FT. WE CLBED BACK TO 12000 FT AS ASSIGNED ALT AND ENCOUNTERED LIGHT TO MODERATE CHOP. WE CONTINUED OUR TRIP UNEVENTFULLY AND CONTACTED ZNY BY PHONE TO RPT THE INCIDENT.

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.

Small transport jet aircraft in cruise encountered severe turbulence, windshear, wind of 132 KTS and flight crew lost control of aircraft as it turned and descended 2300 ft. ATC was notified, aircraft continued on to destination at a lower altitude.