B767 flight crew descending into mroc with an aggressive descent rate received a GPWS terrain alert.

Attributes
ACN	831035
Time
Date	200904
Local Time Of Day	0001-0600
Place
Locale Reference	MROC.Airport
State Reference	FO
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Make Model Name	B767-300 and 300 ER
Operating Under FAR Part	Part 121
Flight Phase	Initial Approach
Flight Plan	IFR
Person 1
Function	Pilot Flying Captain
Experience	Flight Crew Last 90 Days 50 Flight Crew Total 9800 Flight Crew Type 80
Person 2
Function	Pilot Not Flying First Officer
Experience	Flight Crew Last 90 Days 80 Flight Crew Total 6000 Flight Crew Type 80
Events
Anomaly	Inflight Event / Encounter CFTT / CFIT

Narrative:

Enroute to mroc we were cleared to descend to 7;000 ft; fly direct to tio; cleared for the ILS DME runway 7 approach. We were in VMC. The pilot flying and pilot monitoring were in the terrain display. As we proceeded with the clearance visually things looked normal and also ehsi display was green. As we got closer to the rider line; things accelerated rapidly from green to red on the ehsi display. We received a GPWS alert and we executed the CFIT recovery maneuver. As we climbed; the warning ceased and we recovered. We notified ATC and we were cleared for the approach. In the future; I would suggest a more modest descent rate in mountainous terrain areas; so as to not aggravate the GPWS; along with a greater vigilance to the mountain peaks and surrounding areas. In no case assume an ATC clearance; even in a radar environment; precludes the crew from due diligence to maintain a safe altitude.

Original NASA ASRS Text

Title: B767 flight crew descending into MROC with an aggressive descent rate received a GPWS terrain alert.

Narrative: Enroute to MROC we were cleared to descend to 7;000 FT; fly direct to TIO; cleared for the ILS DME Runway 7 approach. We were in VMC. The Pilot Flying and Pilot Monitoring were in the terrain display. As we proceeded with the clearance visually things looked normal and also EHSI display was green. As we got closer to the rider line; things accelerated rapidly from green to red on the EHSI display. We received a GPWS alert and we executed the CFIT recovery maneuver. As we climbed; the warning ceased and we recovered. We notified ATC and we were cleared for the approach. In the future; I would suggest a more modest descent rate in mountainous terrain areas; so as to not aggravate the GPWS; along with a greater vigilance to the mountain peaks and surrounding areas. In no case assume an ATC clearance; even in a radar environment; precludes the crew from due diligence to maintain a safe altitude.

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.