MD80 crew had an enhanced GPWS terrain warning while being vectored at 7000 ft in lax airspace.

Attributes
ACN	423694
Time
Date	199812
Day	Sun
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : sli airport : lgb
State Reference	CA
Altitude	msl bound lower : 7000 msl bound upper : 7300
Environment
Light	Night
Aircraft 1
Operator	common carrier : air carrier
Flight Phase	descent other
Route In Use	arrival other arrival star : star enroute : on vectors
Flight Plan	IFR
Aircraft 2
Make Model Name	MD-80 Super 80
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
ASRS Report	423694
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial
ASRS Report	423693
Events
Anomaly	inflight encounter other other anomaly other other spatial deviation
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	other
Consequence	Other
Supplementary
Air Traffic Incident	other

Narrative:

Egpws terrain warning. While on radar vectors off the kayoh arrival into lgb, we received a GPWS terrain warning. We were at 7000 ft MSL off the sli 082 degree radial, 25 DME at XA48Z. The aircraft was in level flight at the time of the terrain warning. The egpws was not being displayed on the navigation display. A climb was started and the terrain warning stopped at approximately 7300 ft MSL. Socal approach was notified of the GPWS climb and we then returned to 7000 ft MSL with no further incidents. Supplemental information from acn 423693: after being vectored off the kayoh arrival into lgb at 7000 ft MSL, received a GPWS 'terrain' warning. Executed a climb to 7300 ft MSL to clear the warning. Returned to 7000 ft MSL and continued to an uneventful landing. We had an egpws aircraft. Location: sli 082 degree radial, 25 DME. Socal approach was informed of our maneuver.

Original NASA ASRS Text

Title: MD80 CREW HAD AN ENHANCED GPWS TERRAIN WARNING WHILE BEING VECTORED AT 7000 FT IN LAX AIRSPACE.

Narrative: EGPWS TERRAIN WARNING. WHILE ON RADAR VECTORS OFF THE KAYOH ARR INTO LGB, WE RECEIVED A GPWS TERRAIN WARNING. WE WERE AT 7000 FT MSL OFF THE SLI 082 DEG RADIAL, 25 DME AT XA48Z. THE ACFT WAS IN LEVEL FLT AT THE TIME OF THE TERRAIN WARNING. THE EGPWS WAS NOT BEING DISPLAYED ON THE NAV DISPLAY. A CLB WAS STARTED AND THE TERRAIN WARNING STOPPED AT APPROX 7300 FT MSL. SOCAL APCH WAS NOTIFIED OF THE GPWS CLB AND WE THEN RETURNED TO 7000 FT MSL WITH NO FURTHER INCIDENTS. SUPPLEMENTAL INFO FROM ACN 423693: AFTER BEING VECTORED OFF THE KAYOH ARR INTO LGB AT 7000 FT MSL, RECEIVED A GPWS 'TERRAIN' WARNING. EXECUTED A CLB TO 7300 FT MSL TO CLR THE WARNING. RETURNED TO 7000 FT MSL AND CONTINUED TO AN UNEVENTFUL LNDG. WE HAD AN EGPWS ACFT. LOCATION: SLI 082 DEG RADIAL, 25 DME. SOCAL APCH WAS INFORMED OF OUR MANEUVER.

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.