GPWS alarm causes air carrier flight crew to execute an altitude deviation altitude excursion.

Attributes
ACN	239302
Time
Date	199304
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : alb
State Reference	NY
Altitude	msl bound lower : 2500 msl bound upper : 2800
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : alb
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	cruise other descent : approach
Route In Use	enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : flight engineer pilot : instrument
Experience	flight time last 90 days : 180 flight time total : 2200 flight time type : 600
ASRS Report	239302
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 7800 flight time type : 500
ASRS Report	238845
Events
Anomaly	aircraft equipment problem : less severe altitude deviation : excursion from assigned altitude non adherence : clearance other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	flight crew : exited adverse environment flight crew : returned to intended course or assigned course flight crew : took evasive action
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	Pilot Deviation other
Situations
ATC Facility	procedure or policy : unspecified
Airport	other physical facility

Narrative:

On approach into albany, ny, for runway 1 (IMC conditions) level 2500 ft MSL, heading 030, radar vector from approach control 5 mi southwest of delmy. Received a continuous 'terrain, terrain' indication from our GPWS for approximately 10 seconds. Initiated a climb to approximately 3500 ft MSL. Notified approach control of the climb. After landing, we called approach control and they informed us that we were above minimum vectoring altitude. Discussed the problem with company technical services. We decided the warning probably caused by temporary glitch in radio altimeter.

Original NASA ASRS Text

Title: GPWS ALARM CAUSES ACR FLC TO EXECUTE AN ALTDEV ALT EXCURSION.

Narrative: ON APCH INTO ALBANY, NY, FOR RWY 1 (IMC CONDITIONS) LEVEL 2500 FT MSL, HDG 030, RADAR VECTOR FROM APCH CTL 5 MI SW OF DELMY. RECEIVED A CONTINUOUS 'TERRAIN, TERRAIN' INDICATION FROM OUR GPWS FOR APPROX 10 SECONDS. INITIATED A CLB TO APPROX 3500 FT MSL. NOTIFIED APCH CTL OF THE CLB. AFTER LNDG, WE CALLED APCH CTL AND THEY INFORMED US THAT WE WERE ABOVE MINIMUM VECTORING ALT. DISCUSSED THE PROB WITH COMPANY TECHNICAL SVCS. WE DECIDED THE WARNING PROBABLY CAUSED BY TEMPORARY GLITCH IN RADIO ALTIMETER.

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.