B757 captain experiences a GPWS warning approaching keslo on the RNAV rwy 08 at mdpp. A go around is...

Narrative:

We had a rain generated terrain warning shooting the GPS 08 into mdpp in the dominican republic. Light to medium rain; very light chop only. We were in VNAV path; progress 2 showed us right on. 0.0 cross track error; 35 ft high last I saw. First officer did a go around; broke out immediately and shot visual circle to land in clear skies. Approach control was not there - center had to do excessive work to carry the load. I would like to have known the weather was so clear on the other side and I would just have shot a visual. First officer and center did a great job. If it wasn't the rain; it could be a too sensitive radio altimeter - I haven't shot this approach before. I would like to do it in VMC and see exactly where it brings us in - there are certainly lots of hills under the approach.

Original NASA ASRS Text

Title: B757 Captain experiences a GPWS warning approaching KESLO on the RNAV Rwy 08 at MDPP. A go around is initiated by the First Officer as the flying pilot and a visual circle to land approach ensues. The reporter believed that rain may have caused a false GPWS warning.

Narrative: We had a rain generated terrain warning shooting the GPS 08 into MDPP in the Dominican Republic. Light to medium rain; very light chop only. We were in VNAV PATH; Progress 2 showed us right on. 0.0 Cross track error; 35 FT high last I saw. First Officer did a go around; broke out immediately and shot visual circle to land in clear skies. Approach Control was not there - Center had to do excessive work to carry the load. I would like to have known the weather was so clear on the other side and I would just have shot a visual. First Officer and Center did a great job. If it wasn't the rain; it could be a too sensitive radio altimeter - I haven't shot this approach before. I would like to do it in VMC and see exactly where it brings us in - there are certainly lots of hills under the approach.

Data retrieved from NASA's ASRS site as of April 2012 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.

Attributes
ACN	959182
Time
Date	201107
Local Time Of Day	1201-1800
Place
Locale Reference	MDPP.Airport
State Reference	FO
Environment
Light	Daylight
Aircraft 1
Make Model Name	B757-200
Operating Under FAR Part	Part 121
Flight Phase	Initial Approach
Flight Plan	IFR
Component
Aircraft Component	GPWS
Person 1
Function	Captain Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Inflight Event / Encounter CFTT / CFIT Inflight Event / Encounter Weather / Turbulence

B757 captain experiences a GPWS warning approaching keslo on the RNAV rwy 08 at mdpp. A go around is initiated by the first officer as the flying pilot and a visual circle to land approach ensues. The reporter believed that rain may have caused a false GPWS warning.