<< >> NASA ASRS Report 558449, August 2002

A B757 crew, departing jfk, experienced windshear and severe turbulence, resulting in altitude, heading, and airspeed deviations.

Attributes
ACN	558449
Time
Date	200208
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : jfk.airport
State Reference	NY
Altitude	msl bound lower : 700 msl bound upper : 10000
Environment
Weather Elements	Windshear Turbulence
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : n90.tracon tower : jfk.tower
Operator	common carrier : air carrier
Make Model Name	B757 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	climbout : intermediate altitude climbout : initial
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tracon : n90.tracon tower : jfk.tower
Operator	common carrier : air carrier
Make Model Name	B777 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	558449
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
ASRS Report	558450
Events
Anomaly	altitude deviation : excursion from assigned altitude inflight encounter : weather inflight encounter : turbulence other anomaly other anomaly other anomaly other other spatial deviation
Independent Detector	other flight crewa other flight crewb
Resolutory Action	controller : issued alert flight crew : regained aircraft control flight crew : exited adverse environment
Consequence	faa : reviewed incident with flight crew other other
Supplementary
Problem Areas	Environmental Factor Weather
Primary Problem	Weather
Air Traffic Incident	Pilot Deviation

Narrative:

Prior to departure on runway 4L, ATC reported moderate turbulence from surface to 14000 ft with windshear reported at 700 ft. The first officer departed behind a company B777 aircraft. We experienced the turbulence on takeoff and at approximately 700 ft, experienced the windshear. At approximately 900 ft we encountered severe turbulence. Our pitch and airspeed changed drastically and our airspeed increased rapidly through 250 KTS. ATC was trying to direct a heading change but I was doing everything possible to help the first officer fly the aircraft. When I was able to talk to ATC, I notified them that we were passing 4400 ft in severe turbulence but we were only clear to 4000 ft. We continued to experience moderate turbulence until approximately 10000 ft. We continued to have some turbulence and did not breakout of the WX until approximately 17000 ft. Upon landing, we accomplished an exterior inspection and found that the lower cowling on the left engine was damaged.

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Original NASA ASRS Text

Title: A B757 CREW, DEPARTING JFK, EXPERIENCED WINDSHEAR AND SEVERE TURB, RESULTING IN ALT, HDG, AND AIRSPD DEVS.

Narrative: PRIOR TO DEP ON RWY 4L, ATC RPTED MODERATE TURB FROM SURFACE TO 14000 FT WITH WINDSHEAR RPTED AT 700 FT. THE FO DEPARTED BEHIND A COMPANY B777 ACFT. WE EXPERIENCED THE TURB ON TKOF AND AT APPROX 700 FT, EXPERIENCED THE WINDSHEAR. AT APPROX 900 FT WE ENCOUNTERED SEVERE TURB. OUR PITCH AND AIRSPD CHANGED DRASTICALLY AND OUR AIRSPD INCREASED RAPIDLY THROUGH 250 KTS. ATC WAS TRYING TO DIRECT A HDG CHANGE BUT I WAS DOING EVERYTHING POSSIBLE TO HELP THE FO FLY THE ACFT. WHEN I WAS ABLE TO TALK TO ATC, I NOTIFIED THEM THAT WE WERE PASSING 4400 FT IN SEVERE TURB BUT WE WERE ONLY CLR TO 4000 FT. WE CONTINUED TO EXPERIENCE MODERATE TURB UNTIL APPROX 10000 FT. WE CONTINUED TO HAVE SOME TURB AND DID NOT BREAKOUT OF THE WX UNTIL APPROX 17000 FT. UPON LNDG, WE ACCOMPLISHED AN EXTERIOR INSPECTION AND FOUND THAT THE LOWER COWLING ON THE L ENG WAS DAMAGED.

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.