F100 crew had a false GPWS warning at 1200 ft in ZTL class east.

Attributes
ACN	487947
Time
Date	200010
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	navaid : atl.vortac
State Reference	GA
Altitude	msl bound lower : 12000 msl bound upper : 12600
Environment
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Fokker 100
Operating Under FAR Part	Part 121
Flight Phase	descent : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	487947
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : instrument pilot : commercial
ASRS Report	487948
Events
Anomaly	aircraft equipment problem : critical altitude deviation : excursion from assigned altitude other anomaly other
Independent Detector	aircraft equipment : gpws other flight crewa other flight crewb
Resolutory Action	flight crew : returned to assigned altitude none taken : anomaly accepted
Consequence	other other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

GPWS warning. Leveling off at 12000 ft received a GPWS too low terrain warning. Initiated escape maneuver and notified ATC. Warning terminated at 12500 ft leveled at 12600 ft and returned to 12000 ft. ATC advised there was no conflicting traffic or potential of terrain in that area 'obvious.' no further problems. No further discussion with ATC.

Original NASA ASRS Text

Title: F100 CREW HAD A FALSE GPWS WARNING AT 1200 FT IN ZTL CLASS E.

Narrative: GPWS WARNING. LEVELING OFF AT 12000 FT RECEIVED A GPWS TOO LOW TERRAIN WARNING. INITIATED ESCAPE MANEUVER AND NOTIFIED ATC. WARNING TERMINATED AT 12500 FT LEVELED AT 12600 FT AND RETURNED TO 12000 FT. ATC ADVISED THERE WAS NO CONFLICTING TFC OR POTENTIAL OF TERRAIN IN THAT AREA 'OBVIOUS.' NO FURTHER PROBS. NO FURTHER DISCUSSION WITH ATC.

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.