Multiple problems for 2 aircraft including slight loss of aircraft control, non adherence to ATC clearance, taxiway incursion and a go around are created by the lack of adequate traffic spacing on final approach to sna.

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Attributes
ACN	636884
Time
Date	200411
Day	Tue
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : sna.airport
State Reference	CA
Altitude	agl bound lower : 0 agl bound upper : 100
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : sct.tracon tower : sna.tower
Operator	general aviation : corporate
Make Model Name	Learjet 60
Operating Under FAR Part	Part 91
Flight Phase	descent : approach
Route In Use	approach : visual
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tracon : sct.tracon tower : sna.tower
Operator	common carrier : air carrier
Make Model Name	MD-83
Operating Under FAR Part	Part 121
Flight Phase	descent : approach landing : roll
Flight Plan	IFR
Person 1
Affiliation	company : corporate
Function	flight crew : captain oversight : pic
Qualification	pilot : multi engine pilot : atp
Experience	flight time last 90 days : 140 flight time total : 12850 flight time type : 1500
ASRS Report	636884
Person 2
Affiliation	company : corporate
Function	flight crew : first officer
Events
Anomaly	incursion : taxiway inflight encounter : wake turbulence non adherence : clearance other anomaly other anomaly other
Independent Detector	other controllera other flight crewa
Resolutory Action	controller : issued new clearance flight crew : executed go around flight crew : regained aircraft control other
Consequence	Other
Supplementary
Problem Areas	ATC Human Performance Airspace Structure Flight Crew Human Performance Environmental Factor
Primary Problem	Environmental Factor

Narrative:

During visual approach and landing, my flight had a wake turbulence encounter at 100 ft AGL. The spacing with MD83 was adequate at 4.5 mi on the TCASII, and the approach was flown 1 DOT high for wake avoidance and noise abatement. The roll rate was light with a 15 degree left wing down bank before recovery. Landing was completed 700 ft beyond the aim point. Tower requested an intersection turnoff for traffic, which we replied 'unable.' controllers need to be reminded that intersection turnoff clrncs shouldn't be issued at night to jet aircraft on rollout on shorter runways. The BE200 spaced 40 degrees close to us went around, and we exited to the right side taxiway to clear as soon as possible. Unfortunately, the FBO was to the left and we had to wait 10 mins to re-cross the runway. A little mental confusion on my part during the heat of the moment.

Original NASA ASRS Text

Title: MULTIPLE PROBS FOR 2 ACFT INCLUDING SLIGHT LOSS OF ACFT CTL, NON ADHERENCE TO ATC CLRNC, TXWY INCURSION AND A GAR ARE CREATED BY THE LACK OF ADEQUATE TFC SPACING ON FINAL APCH TO SNA.

Narrative: DURING VISUAL APCH AND LNDG, MY FLT HAD A WAKE TURB ENCOUNTER AT 100 FT AGL. THE SPACING WITH MD83 WAS ADEQUATE AT 4.5 MI ON THE TCASII, AND THE APCH WAS FLOWN 1 DOT HIGH FOR WAKE AVOIDANCE AND NOISE ABATEMENT. THE ROLL RATE WAS LIGHT WITH A 15 DEG L WING DOWN BANK BEFORE RECOVERY. LNDG WAS COMPLETED 700 FT BEYOND THE AIM POINT. TWR REQUESTED AN INTXN TURNOFF FOR TFC, WHICH WE REPLIED 'UNABLE.' CTLRS NEED TO BE REMINDED THAT INTXN TURNOFF CLRNCS SHOULDN'T BE ISSUED AT NIGHT TO JET ACFT ON ROLLOUT ON SHORTER RWYS. THE BE200 SPACED 40 DEGS CLOSE TO US WENT AROUND, AND WE EXITED TO THE R SIDE TXWY TO CLR ASAP. UNFORTUNATELY, THE FBO WAS TO THE L AND WE HAD TO WAIT 10 MINS TO RE-CROSS THE RWY. A LITTLE MENTAL CONFUSION ON MY PART DURING THE HEAT OF THE MOMENT.

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.