EMB145 flight crew experiences windshear during approach to lga.

Attributes
ACN	702264
Time
Date	200606
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : lga.airport
State Reference	NY
Altitude	msl single value : 500
Environment
Flight Conditions	IMC
Weather Elements	Turbulence Rain Thunderstorm Windshear
Light	Dusk
Aircraft 1
Controlling Facilities	tower : lga.tower tower : zzz.tower
Operator	common carrier : air carrier
Make Model Name	EMB ERJ 145 ER&LR
Operating Under FAR Part	Part 121
Flight Phase	descent : approach
Route In Use	approach : instrument precision
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Experience	flight time last 90 days : 240 flight time type : 5000
ASRS Report	702264
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Experience	flight time type : 1200
ASRS Report	702263
Events
Anomaly	inflight encounter : turbulence inflight encounter : weather other anomaly
Independent Detector	other flight crewa other flight crewb
Resolutory Action	flight crew : declared emergency flight crew : exited adverse environment
Supplementary
Problem Areas	Flight Crew Human Performance Weather
Primary Problem	Weather

Narrative:

At approximately 500 ft on the ILS runway 22 into lga we encountered an area of very heavy rain; it seemed to form and intensify very quickly. By the time we realized it was there we were in it. The aircraft experienced a sudden loss of airspeed and began to sink below the GS. I initiated a windshear recovery; setting maximum thrust and pitching up. The aircraft initially responded slowly to the pitch and power change; then began a slow climb. Approximately 2-3 aircraft following us also went around. We were vectored to join a left downwind and after hearing several other aircraft land safely; we made a second approach and experienced smooth conditions. There were thunderstorms with tops in the 20's southwest of the airport. We had been vectored to downwind along the edge of them experiencing only some heavy rain and light turbulence.

Original NASA ASRS Text

Title: EMB145 FLT CREW EXPERIENCES WINDSHEAR DURING APCH TO LGA.

Narrative: AT APPROX 500 FT ON THE ILS RWY 22 INTO LGA WE ENCOUNTERED AN AREA OF VERY HVY RAIN; IT SEEMED TO FORM AND INTENSIFY VERY QUICKLY. BY THE TIME WE REALIZED IT WAS THERE WE WERE IN IT. THE ACFT EXPERIENCED A SUDDEN LOSS OF AIRSPD AND BEGAN TO SINK BELOW THE GS. I INITIATED A WINDSHEAR RECOVERY; SETTING MAX THRUST AND PITCHING UP. THE ACFT INITIALLY RESPONDED SLOWLY TO THE PITCH AND PWR CHANGE; THEN BEGAN A SLOW CLB. APPROX 2-3 ACFT FOLLOWING US ALSO WENT AROUND. WE WERE VECTORED TO JOIN A L DOWNWIND AND AFTER HEARING SEVERAL OTHER ACFT LAND SAFELY; WE MADE A SECOND APCH AND EXPERIENCED SMOOTH CONDITIONS. THERE WERE TSTMS WITH TOPS IN THE 20'S SW OF THE ARPT. WE HAD BEEN VECTORED TO DOWNWIND ALONG THE EDGE OF THEM EXPERIENCING ONLY SOME HVY RAIN AND LIGHT TURB.

Data retrieved from NASA's ASRS site as of January 2009 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.