DC10 crew had a GPWS 'terrain, terrain' warning while on approach to runway 11 at oak.

Attributes
ACN	568040
Time
Date	200212
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : oak.airport
State Reference	CA
Altitude	msl single value : 3000
Environment
Flight Conditions	IMC
Light	Dusk
Aircraft 1
Controlling Facilities	tracon : nct.tracon
Operator	common carrier : air carrier
Make Model Name	DC-10 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	descent : approach
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 10000 flight time type : 3000
ASRS Report	568040
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	other anomaly other
Independent Detector	aircraft equipment : gpws other flight crewa other flight crewb
Resolutory Action	flight crew : took evasive action other
Supplementary
Problem Areas	Aircraft Flight Crew Human Performance Weather FAA
Primary Problem	Ambiguous

Narrative:

Received a GPWS terrain alert at approximately 3000 ft on approach to runway 11 at oak. Notified approach of alert and left assigned altitude of 3000 ft for 4500 ft.

Original NASA ASRS Text

Title: DC10 CREW HAD A GPWS 'TERRAIN, TERRAIN' WARNING WHILE ON APCH TO RWY 11 AT OAK.

Narrative: RECEIVED A GPWS TERRAIN ALERT AT APPROX 3000 FT ON APCH TO RWY 11 AT OAK. NOTIFIED APCH OF ALERT AND LEFT ASSIGNED ALT OF 3000 FT FOR 4500 FT.

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.