Aircraft climbed 1000 ft above assigned altitude when they received inappropriate GPWS.

Attributes
ACN	234010
Time
Date	199302
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : lga
State Reference	NY
Altitude	msl bound lower : 3000 msl bound upper : 4000
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : n90
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport
Flight Phase	cruise other
Route In Use	enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 180 flight time total : 9000
ASRS Report	234010
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	aircraft equipment problem : critical altitude deviation : excursion from assigned altitude non adherence : clearance
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	flight crew : took evasive action flight crew : returned to intended course or assigned course
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	Pilot Deviation

Narrative:

In level flight at 3000 ft MSL and on a heading of 210 degrees and 180 KTS, we received a 'pull up' warning. I, the captain, immediately began a climb while the first officer reported to ATC that we were climbing due to GPWS. We topped out at 4000 ft MSL at which time ATC directed us to return to 3000 ft MSL, which we did. We were TCASII equipped but received no warnings.

Original NASA ASRS Text

Title: ACFT CLBED 1000 FT ABOVE ASSIGNED ALT WHEN THEY RECEIVED INAPPROPRIATE GPWS.

Narrative: IN LEVEL FLT AT 3000 FT MSL AND ON A HDG OF 210 DEGS AND 180 KTS, WE RECEIVED A 'PULL UP' WARNING. I, THE CAPT, IMMEDIATELY BEGAN A CLB WHILE THE FO RPTED TO ATC THAT WE WERE CLBING DUE TO GPWS. WE TOPPED OUT AT 4000 FT MSL AT WHICH TIME ATC DIRECTED US TO RETURN TO 3000 FT MSL, WHICH WE DID. WE WERE TCASII EQUIPPED BUT RECEIVED NO WARNINGS.

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.