Date: 201407
Local time of day: 1801-2400
Location: OKB.Airport, CA
Light: Night
Aircraft: Small Aircraft
Flight plan: IFR
Flight phase: Descent
Airspace: Class E ZLA
ATC / advisory: TRACON SCT
Second aircraft: Small Transport
Reporter organization: Military
Reporter function: Approach
Reporter qualification: Air Traffic Control Fully Certified
Human factors: Confusion; Communication Breakdown
Anomaly: ATC Issue All Types; Airspace Violation All Types; Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy
Detector: Person Air Traffic Control
When detected: In-flight
Result: Air Traffic Control Provided Assistance; Flight Crew Returned To Clearance
Contributing factors: Aircraft; Procedure
Primary problem: Procedure

Narrative: I was working Del Mar Sector; Aircraft X was IFR; inbound to OKB on the GPS RWY24 approach; intending an IFR missed approach. Aircraft Y departed and began climbing for skydiving over OKB. Based on Aircraft Y's performance on previous days; I estimated that Aircraft X would pass the airport before Aircraft Y was ready to drop skydivers. I pointed out Aircraft X to Pacific Sector; who works Aircraft Y; and shipped Aircraft X to the advisory frequency; which Aircraft Y monitors; so the two would be able to communicate their intentions to each other. Aircraft Y climbed much faster than in days prior; and turned inbound to drop skydivers over the airport as Aircraft X was also approaching the airport. Aircraft X checked back in with me not on the published missed approach; but 'offsetting for skydivers.' The result was an IFR aircraft executing other than the published missed approach; below the MVA. I asked Aircraft X if he was VFR and he concurred. While I don't know if; on the advisory frequency; he offered to alter course for the skydivers; or if Aircraft X just dropped anyway; either way it was an unsafe situation for an IFR aircraft to be in. The pilot should not have had to alter course; whether voluntarily or not; as he; on an IFR approach; is entitled to fly the published missed approach when necessary. The whole operation of Aircraft Y skydiving should be closely reviewed; as it has an enormous impact on IFR traffic and is highly unsafe to VFR traffic as well. The area where Aircraft Y drops skydivers is extremely busy and the altitude he drops from impacts four different sectors: he drops from 13;000 FT; on V458; which is right on the VISTA arrival into LAX; where air carriers need to be descending out of 14;000 FT; affecting ZLA Sector 12; and possibly Sector 21 if the aircraft are stuck high too long; it affects Pacific Sector who works the jump aircraft and VISTA arrivals; it affects North Sector who owns airspace in the area; and it greatly affects Del Mar Sector who works all the traffic in and out of OKB; NFG; and CRQ; all of whose IFR procedures are hindered by the skydiving. Aircraft Y skydiving should have to move their jump zone to a less congested area. If it does continue; Del Mar Sector needs to work the aircraft as they have the most traffic underneath the zone; and we need to be able to instruct the pilot to 'hold jumpers' for IFR traffic.




Synopsis: SCT Controller reports a situation where an IFR aircraft offsets its missed approach for skydiving activity.