Sct controller described a probable mmtj airspace infraction during an attempt to demonstrate to a d...

Narrative:

I was providing OJT on the sdzr position. There was a lot of parachute activity at the trident jump zone 2 miles east of sdm field. There were also a lot of IFR arrivals coming out of mexico landing at sdm field to clear customs. I attempted to demonstrate to my developmental; differing techniques of vectoring the arriving aircraft around the jump zone for a base leg entry over the prison; which has worked successfully in the past. Aircraft X did not descend as expected and was making an unexpected 360 degree turn to get down. I noticed that the pilot was turning toward the jump zone and jumpers were in the air. I instructed the pilot to make a turn to the right to avoid the jump zone; which was successful; but this instruction was going to require coordination with mmtj approach; as the aircraft's rate of turn was going to put it over mmtj airport; only 1.5 miles south of sdm field. Due to traffic volume and complexity; I was not able to effect the coordination before the aircraft was overflying mmtj airport. I believe the supervisor or another controller effected the coordination in time; but I am not certain of that. Recommendation; I should have delayed the jump aircraft and not attempted to show my developmental a more expeditious way to handle the arrivals into sdm field. I mistakenly assumed that the pilot was familiar with making a base turn over the prison; which has worked successfully in the past.

Original NASA ASRS Text

Title: SCT Controller described a probable MMTJ airspace infraction during an attempt to demonstrate to a developmental vectoring techniques to avoid parachute drops near SDM; the reporter acknowledges the jump activity should have been delayed.

Narrative: I was providing OJT on the SDZR position. There was a lot of parachute activity at the Trident jump zone 2 miles east of SDM field. There were also a lot of IFR arrivals coming out of Mexico landing at SDM field to clear customs. I attempted to demonstrate to my developmental; differing techniques of vectoring the arriving aircraft around the jump zone for a base leg entry over the prison; which has worked successfully in the past. Aircraft X did not descend as expected and was making an unexpected 360 degree turn to get down. I noticed that the pilot was turning toward the jump zone and jumpers were in the air. I instructed the pilot to make a turn to the right to avoid the jump zone; which was successful; but this instruction was going to require coordination with MMTJ Approach; as the aircraft's rate of turn was going to put it over MMTJ airport; only 1.5 miles south of SDM field. Due to traffic volume and complexity; I was not able to effect the coordination before the aircraft was overflying MMTJ airport. I believe the Supervisor or another Controller effected the coordination in time; but I am not certain of that. Recommendation; I should have delayed the jump aircraft and not attempted to show my developmental a more expeditious way to handle the arrivals into SDM field. I mistakenly assumed that the pilot was familiar with making a base turn over the prison; which has worked successfully in the past.

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	936412
Time
Date	201103
Local Time Of Day	1801-2400
Place
Locale Reference	SDM.Airport
State Reference	CA
Environment
Light	Night
Aircraft 1
Make Model Name	Learjet 31
Flight Phase	Cruise
Route In Use	Visual Approach
Flight Plan	IFR
Person 1
Function	Instructor
Qualification	Air Traffic Control Fully Certified
Events
Anomaly	ATC Issue All Types Airspace Violation All Types

Sct controller described a probable mmtj airspace infraction during an attempt to demonstrate to a developmental vectoring techniques to avoid parachute drops near sdm; the reporter acknowledges the jump activity should have been delayed.