<< >> NASA ASRS Report 406258, June 1998

Approach control at lax requested approval from ZLA for jump aircraft to occupy 15000 ft. ZLA disapproved request because of traffic climbing to 13000 ft. Approach control may have allowed the jump aircraft to occupy 14000 ft. It is not known if the jumpers were released.

Attributes
ACN	406258
Time
Date	199806
Day	Fri
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : sna
State Reference	CA
Altitude	msl bound lower : 13800 msl bound upper : 17000
Environment
Flight Conditions	VMC
Light	Dusk
Aircraft 1
Controlling Facilities	artcc : zla tracon : lax
Operator	general aviation : instructional
Make Model Name	Twin Otter DHC-6
Operating Under FAR Part	Part 91
Flight Phase	cruise other
Route In Use	approach : circling
Flight Plan	VFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	A310
Operating Under FAR Part	Part 121
Flight Phase	climbout : intermediate altitude
Route In Use	departure other departure sid : sid
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : radar controller : handoff position controller : flight data
Qualification	controller : radar
Experience	controller radar : 25
ASRS Report	406258
Person 2
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
Events
Anomaly	other anomaly other
Independent Detector	atc equipment other atc equipment : unspecified other controllera
Resolutory Action	none taken : anomaly accepted
Consequence	Other
Miss Distance	horizontal : 0 vertical : 1000
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	other

Narrative:

I was working R12 at ZLA, area east. Socal hemet sector called with a request for 15000 ft for jump aircraft. I told them unable jump aircraft because I had a heavy jet on departure from sna climbing to 13000 ft. They climbed the jump aircraft to 14000 ft and said I only disapproved 15000 ft, not climb to 14000 ft.

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Original NASA ASRS Text

Title: APCH CTL AT LAX REQUESTED APPROVAL FROM ZLA FOR JUMP ACFT TO OCCUPY 15000 FT. ZLA DISAPPROVED REQUEST BECAUSE OF TFC CLBING TO 13000 FT. APCH CTL MAY HAVE ALLOWED THE JUMP ACFT TO OCCUPY 14000 FT. IT IS NOT KNOWN IF THE JUMPERS WERE RELEASED.

Narrative: I WAS WORKING R12 AT ZLA, AREA E. SOCAL HEMET SECTOR CALLED WITH A REQUEST FOR 15000 FT FOR JUMP ACFT. I TOLD THEM UNABLE JUMP ACFT BECAUSE I HAD A HVY JET ON DEP FROM SNA CLBING TO 13000 FT. THEY CLBED THE JUMP ACFT TO 14000 FT AND SAID I ONLY DISAPPROVED 15000 FT, NOT CLB TO 14000 FT.

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.