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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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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.