First officer climbed aircraft from assigned approach altitude in response to a GPWS alert.

Attributes
ACN	286522
Time
Date	199410
Day	Sat
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : roa
State Reference	VA
Altitude	msl bound lower : 3700 msl bound upper : 4100
Environment
Flight Conditions	IMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : roa
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	descent other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 60 flight time total : 10000 flight time type : 5700
ASRS Report	286522
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
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 other flight crewa
Resolutory Action	flight crew : returned to intended course or assigned course
Consequence	faa : reviewed incident with flight crew
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

Roa approach cleared flight to 3700 ft. Leveling at 3700 ft GPWS announced 'terrain, terrain.' radar altimeter. Indicated approximately 1500 ft AGL. At captain's instructions we climbed aircraft to 4100 ft MSL. GPWS ceased. We notified roa approach of GPWS warning and that we had climbed to 4100 ft. No conflict noted. Rest of flight uneventful.

Original NASA ASRS Text

Title: FO CLBED ACFT FROM ASSIGNED APCH ALT IN RESPONSE TO A GPWS ALERT.

Narrative: ROA APCH CLRED FLT TO 3700 FT. LEVELING AT 3700 FT GPWS ANNOUNCED 'TERRAIN, TERRAIN.' RADAR ALTIMETER. INDICATED APPROX 1500 FT AGL. AT CAPT'S INSTRUCTIONS WE CLBED ACFT TO 4100 FT MSL. GPWS CEASED. WE NOTIFIED ROA APCH OF GPWS WARNING AND THAT WE HAD CLBED TO 4100 FT. NO CONFLICT NOTED. REST OF FLT UNEVENTFUL.

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.