MD80 crew had a GPWS warning while flying the localizer runway 31 approach to lga.

Attributes
ACN	578005
Time
Date	200303
Day	Sun
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : lga.airport
State Reference	NY
Altitude	agl single value : 650
Environment
Light	Night
Aircraft 1
Controlling Facilities	tower : lga.tower
Operator	common carrier : air carrier
Make Model Name	MD-80 Super 80
Operating Under FAR Part	Part 121
Navigation In Use	ils localizer only : 31 other
Flight Phase	descent : approach
Route In Use	approach : instrument non precision
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
ASRS Report	578005
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Events
Anomaly	other anomaly other
Independent Detector	aircraft equipment : gpws other flight crewa other flight crewb
Resolutory Action	none taken : anomaly accepted
Consequence	other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

GPWS warning on short final to localizer 31 approach. Momentary obstacle call on GPWS, which was followed by a pull-up just as captain acquired the runway and VASI lights for runway 31.obstacle detected on localizer 31 approach at lga. At that time, we had visual contact with the ground, and we were aware of our position, and to continue to the runway was captain's call, so we made normal landing.

Original NASA ASRS Text

Title: MD80 CREW HAD A GPWS WARNING WHILE FLYING THE LOC RWY 31 APCH TO LGA.

Narrative: GPWS WARNING ON SHORT FINAL TO LOC 31 APCH. MOMENTARY OBSTACLE CALL ON GPWS, WHICH WAS FOLLOWED BY A PULL-UP JUST AS CAPT ACQUIRED THE RWY AND VASI LIGHTS FOR RWY 31.OBSTACLE DETECTED ON LOC 31 APCH AT LGA. AT THAT TIME, WE HAD VISUAL CONTACT WITH THE GND, AND WE WERE AWARE OF OUR POS, AND TO CONTINUE TO THE RWY WAS CAPT'S CALL, SO WE MADE NORMAL LNDG.

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.