A319 first officer reported receiving a false GPWS terrain warning on approach to mdpc.

Attributes
ACN	1253213
Time
Date	201504
Local Time Of Day	0601-1200
Place
Locale Reference	MDPC.Airport
State Reference	FO
Environment
Flight Conditions	Marginal
Light	Daylight
Aircraft 1
Make Model Name	A319
Operating Under FAR Part	Part 121
Flight Phase	Initial Approach
Flight Plan	IFR
Component
Aircraft Component	GPWS
Person 1
Function	First Officer Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Less Severe

Narrative:

Approach had cleared us to 3000 ft approaching agnal fix for RNAV runway 08. Terrain mapping was on but was not painting terrain in the area. Broken cloud conditions with good visibility underneath. We were both familiar with approach and terrain. Terrain 'pull up' warning suddenly activated so we climbed to 4000. Went back to 3000 by agnal and continued approach.terrain mapping function seemed to not be functioning properly. No terrain was painting when sudden warning occurred.

Original NASA ASRS Text

Title: A319 First Officer reported receiving a false GPWS terrain warning on approach to MDPC.

Narrative: Approach had cleared us to 3000 FT approaching AGNAL fix for RNAV RWY 08. Terrain mapping was on but was not painting terrain in the area. Broken cloud conditions with good visibility underneath. We were both familiar with approach and terrain. Terrain 'pull up' warning suddenly activated so we climbed to 4000. Went back to 3000 by AGNAL and continued approach.Terrain mapping function seemed to not be functioning properly. No terrain was painting when sudden warning occurred.

Data retrieved from NASA's ASRS site 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.