Sct controller reported difficulty guiding descents into sna that meet the revised MVA limits.

Attributes
ACN	1531822
Time
Date	201803
Local Time Of Day	1201-1800
Place
Locale Reference	SCT.TRACON
State Reference	CA
Aircraft 1
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Descent
Route In Use	Vectors
Flight Plan	IFR
Person 1
Function	Approach
Qualification	Air Traffic Control Fully Certified
Experience	Air Traffic Control Time Certified In Pos 1 (mon) 5 Air Traffic Control Time Certified In Pos 1 (yrs) 3
Events
Anomaly	ATC Issue All Types Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy Inflight Event / Encounter CFTT / CFIT

Narrative:

The sna final has very high terrain to the east; which makes it nearly impossible to meet the glideslope requirements. If we don't anticipate; we put aircraft in an unsafe; unstable approach. If we wait till the line; and say; 'descend and maintain 3000'; it often takes a few sweeps until the altitude changes which puts them above 4500 over snake which they should be at 3400 at. It is a very bad setup. Pilots are commonly asking for lower; pilots zigzag through the final sometimes because they're above; and approximately a year ago; we had a step down to alleviate all of this; which was 2200 feet lower than the current MVA.recommendation: either tweak the mvas so that we can descend earlier; or make everyone go on right downwind with sna flow.

Original NASA ASRS Text

Title: SCT Controller reported difficulty guiding descents into SNA that meet the revised MVA limits.

Narrative: The SNA final has very high terrain to the east; which makes it nearly impossible to meet the glideslope requirements. If we don't anticipate; we put aircraft in an unsafe; unstable approach. If we wait till the line; and say; 'descend and maintain 3000'; it often takes a few sweeps until the altitude changes which puts them above 4500 over SNAKE which they should be at 3400 at. It is a very bad setup. Pilots are commonly asking for lower; pilots zigzag through the final sometimes because they're above; and approximately a year ago; we had a step down to alleviate all of this; which was 2200 feet lower than the current MVA.Recommendation: Either tweak the MVAs so that we can descend earlier; or make everyone go on right downwind with SNA flow.

Data retrieved from NASA's ASRS site 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.