A319 pilot at 10000 feet 20 NM northeast of tus reports responding to a terrain warning.

Attributes
ACN	869846
Time
Date	201001
Local Time Of Day	1201-1800
Place
Locale Reference	TUS.Airport
State Reference	AZ
Environment
Flight Conditions	VMC
Aircraft 1
Make Model Name	A319
Operating Under FAR Part	Part 121
Flight Phase	Initial Approach
Route In Use	Vectors
Flight Plan	IFR
Component
Aircraft Component	GPWS
Person 1
Function	Pilot Not Flying
Experience	Flight Crew Last 90 Days 190 Flight Crew Total 4500 Flight Crew Type 2050
Events
Anomaly	Aircraft Equipment Problem Less Severe

Narrative:

Level at 10;000 feet and 300kts on a vector for a visual to runway 11L at tus. Flew over a mountain an received a 'terrain; terrain' warning. Initiated a climb and it quickly went away. Gained no more than 300 feet and returned to 10;000 right away. Radar altimeter got no lower than 1600 feet. Notified ATC and their response was that it had never happened there before.

Original NASA ASRS Text

Title: A319 pilot at 10000 feet 20 NM northeast of TUS reports responding to a terrain warning.

Narrative: Level at 10;000 feet and 300kts on a vector for a visual to runway 11L at TUS. Flew over a mountain an received a 'terrain; terrain' warning. Initiated a climb and it quickly went away. Gained no more than 300 feet and returned to 10;000 right away. Radar Altimeter got no lower than 1600 feet. Notified ATC and their response was that it had never happened there before.

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.