ZLA controller described a terrain loss of separation event when he/she failed to note the developin...

Narrative:

Aircraft X was handed off from sector 10 and advised that the aircraft was requesting the GPS approach. I asked if the aircraft was my control and was told aircraft X was my control. I selected the approach on the urets display. When the aircraft checked on the frequency and requested the GPS approach; I gave the aircraft the altimeter and cleared the aircraft to ogsoe (IAF). I was moderately busy with other aircraft while putting in the aircraft's new route into host. I checked the altitudes on the approach (aoa 4;400 at ogsoe) then checked the MEA chart to see if the new route would encroach the 7;000 ft MEA south of eed. When I did check the aircraft; it had already entered the higher MEA area. There was no MSAW alert prior to or after the aircraft crossed the 7;000 ft area boundary. I immediately climbed the aircraft to 7;000. Subsequently instructed the aircraft to cross ogsoe at 7;000 cleared for approach. The aircraft read back the clearance and then canceled IFR. Recommendation; if the MSAW alert worked correctly the event would not have occurred.

Original NASA ASRS Text

Title: ZLA Controller described a terrain loss of separation event when he/she failed to note the developing situation; adding no MSAW alert activated which might have prevented the incident.

Narrative: Aircraft X was handed off from Sector 10 and advised that the aircraft was requesting the GPS approach. I asked if the aircraft was my control and was told Aircraft X was my control. I selected the approach on the URETS display. When the aircraft checked on the frequency and requested the GPS approach; I gave the aircraft the altimeter and cleared the aircraft to OGSOE (IAF). I was moderately busy with other aircraft while putting in the aircraft's new route into Host. I checked the altitudes on the approach (AOA 4;400 at OGSOE) then checked the MEA chart to see if the new route would encroach the 7;000 FT MEA south of EED. When I did check the aircraft; it had already entered the higher MEA area. There was no MSAW alert prior to or after the aircraft crossed the 7;000 FT area boundary. I immediately climbed the aircraft to 7;000. Subsequently instructed the aircraft to cross OGSOE at 7;000 cleared for approach. The aircraft read back the clearance and then canceled IFR. Recommendation; If the MSAW alert worked correctly the event would not have occurred.

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	873838
Time
Date	201002
Local Time Of Day	1801-2400
Place
Locale Reference	ZLA.ARTCC
State Reference	CA
Aircraft 1
Make Model Name	Small Aircraft Low Wing 1 Eng Retractable Gear
Operating Under FAR Part	Part 91
Flight Phase	Initial Approach
Flight Plan	IFR
Person 1
Function	Enroute
Qualification	Air Traffic Control Fully Certified
Events
Anomaly	ATC Issue All Types Deviation - Procedural Published Material / Policy Inflight Event / Encounter CFTT / CFIT

ZLA controller described a terrain loss of separation event when he/she failed to note the developing situation; adding no MSAW alert activated which might have prevented the incident.