B757 crew had severe windshear (50 KT airspeed loss) on initial climb out at pit.

Attributes
ACN	425643
Time
Date	199901
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : pit
State Reference	PA
Altitude	agl bound lower : 1500 agl bound upper : 1500
Environment
Flight Conditions	IMC
Light	Night
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B757 Undifferentiated or Other Model
Navigation In Use	Other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Experience	flight time last 90 days : 200 flight time total : 20000 flight time type : 4000
ASRS Report	425643
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial
Events
Anomaly	inflight encounter : weather other anomaly other
Independent Detector	other flight crewa
Resolutory Action	other other
Consequence	Other
Supplementary
Air Traffic Incident	other

Narrative:

After takeoff and climbing through 1500 ft AGL, experienced an airspeed loss from 170 KTS to 120 KTS (50 KT loss) and within 3-5 seconds. I went to firewall power and reduced pitch from 15 degrees to approximately 10 degrees to maintain level to slightly positive rate of climb, and start accelerating. Flap retraction had already been initiated from 15 degrees to 5 degrees. The flaps were at 5 degrees and airspeed at 120 KTS when windshear recovery initiated with application of firewall power. The aircraft flew out of it. A PIREP was given to the tower and departure control.

Original NASA ASRS Text

Title: B757 CREW HAD SEVERE WINDSHEAR (50 KT AIRSPD LOSS) ON INITIAL CLBOUT AT PIT.

Narrative: AFTER TKOF AND CLBING THROUGH 1500 FT AGL, EXPERIENCED AN AIRSPD LOSS FROM 170 KTS TO 120 KTS (50 KT LOSS) AND WITHIN 3-5 SECONDS. I WENT TO FIREWALL PWR AND REDUCED PITCH FROM 15 DEGS TO APPROX 10 DEGS TO MAINTAIN LEVEL TO SLIGHTLY POSITIVE RATE OF CLB, AND START ACCELERATING. FLAP RETRACTION HAD ALREADY BEEN INITIATED FROM 15 DEGS TO 5 DEGS. THE FLAPS WERE AT 5 DEGS AND AIRSPD AT 120 KTS WHEN WINDSHEAR RECOVERY INITIATED WITH APPLICATION OF FIREWALL PWR. THE ACFT FLEW OUT OF IT. A PIREP WAS GIVEN TO THE TWR AND DEP CTL.

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.