Narrative:

Descending into ZZZ on a vector to valyrie intersection, at 7000 ft MSL, a 'too low terrain' GPWS aural warning went off. Responded to the warning in accordance with red box procedures and advised ZBW. Warning went out as we climbed through approximately 9000 ft MSL. Egpws (enhanced ground proximity warning system) was not on. MSA in the area is 3000 ft MSL. Releveled at 10000 ft, proceeded to ign and then continued the descent for landing, using ILS runway 16 approach to ZZZ. No further 'too low terrain' warnings during this part of the flight. ZBW queried us for information for his required report. As best we know, no traffic was moved for our response to the GPWS warning. Problem entered as a mechanical in the logbook. Maintenance fix was to placard the GPWS inoperative.

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Original NASA ASRS Text

Title: A FOKKER 100 ON DSCNT AT 7000 FT TO ZZZ EXPERIENCED GND PROX WARNING 'TOO LOW TERRAIN.' EXECUTED GAR. PROB LOGGED AS MECHANICAL.

Narrative: DSNDING INTO ZZZ ON A VECTOR TO VALYRIE INTXN, AT 7000 FT MSL, A 'TOO LOW TERRAIN' GPWS AURAL WARNING WENT OFF. RESPONDED TO THE WARNING IN ACCORDANCE WITH RED BOX PROCS AND ADVISED ZBW. WARNING WENT OUT AS WE CLBED THROUGH APPROX 9000 FT MSL. EGPWS (ENHANCED GND PROX WARNING SYS) WAS NOT ON. MSA IN THE AREA IS 3000 FT MSL. RELEVELED AT 10000 FT, PROCEEDED TO IGN AND THEN CONTINUED THE DSCNT FOR LNDG, USING ILS RWY 16 APCH TO ZZZ. NO FURTHER 'TOO LOW TERRAIN' WARNINGS DURING THIS PART OF THE FLT. ZBW QUERIED US FOR INFO FOR HIS REQUIRED RPT. AS BEST WE KNOW, NO TFC WAS MOVED FOR OUR RESPONSE TO THE GPWS WARNING. PROB ENTERED AS A MECHANICAL IN THE LOGBOOK. MAINT FIX WAS TO PLACARD THE GPWS INOP.

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.