BE20 pilot on downwind leg at sdl had an near midair collision with a G4 reported by the tower on a ...

Attributes
ACN	546882
Time
Date	200205
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : sdl.airport
State Reference	AZ
Altitude	msl single value : 3000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	Super King Air 200 HDC
Operating Under FAR Part	Part 91
Flight Phase	descent : approach
Route In Use	approach : traffic pattern
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tower : sdl.tower
Operator	general aviation : personal
Make Model Name	Gulfstream IV
Operating Under FAR Part	Part 91
Flight Phase	descent : approach
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : private pilot : instrument pilot : multi engine
Experience	flight time last 90 days : 28 flight time total : 1250 flight time type : 270
ASRS Report	546882
Person 2
Affiliation	other
Function	flight crew : captain oversight : pic
Events
Anomaly	conflict : nmac non adherence : far non adherence : published procedure other anomaly other
Independent Detector	atc equipment other atc equipment : brite radar other flight crewa other flight crewb
Resolutory Action	controller : issued new clearance
Miss Distance	horizontal : 10500 vertical : 300
Supplementary
Problem Areas	Flight Crew Human Performance ATC Human Performance
Primary Problem	ATC Human Performance

Narrative:

Right downwind for runway 21 as instructed by sdl tower. Was told by tower that traffic to follow was a gulfstream on 5 mi final. Replied: negative on that traffic, looking. Asked tower if we were #1 or #2. Tower replied traffic to follow was gulfstream off to our right. Replied I saw traffic to right, but it didn't appear to be a gulfstream (saw a citation to the right at about 2 O'clock position, turning to final). Saw gulfstream at our 10 O'clock position. Tower instructed us to break off, turn left immediately. Saw gulfstream initially turn to its right, then turn to its left away from us. Gulfstream landed, we were instructed to establish 4 mi final for runway 21, which we did. Landed without incident. TCASII would have helped. May have been factor for gulfstream. Confusion in pattern as to where we were in sequence. Should have asked controller to call our turn to base, that way no confusion over our sequence and position relative to other aircraft.

Original NASA ASRS Text

Title: BE20 PLT ON DOWNWIND LEG AT SDL HAD AN NMAC WITH A G4 RPTED BY THE TWR ON A 5 MI FINAL.

Narrative: R DOWNWIND FOR RWY 21 AS INSTRUCTED BY SDL TWR. WAS TOLD BY TWR THAT TFC TO FOLLOW WAS A GULFSTREAM ON 5 MI FINAL. REPLIED: NEGATIVE ON THAT TFC, LOOKING. ASKED TWR IF WE WERE #1 OR #2. TWR REPLIED TFC TO FOLLOW WAS GULFSTREAM OFF TO OUR R. REPLIED I SAW TFC TO R, BUT IT DIDN'T APPEAR TO BE A GULFSTREAM (SAW A CITATION TO THE R AT ABOUT 2 O'CLOCK POS, TURNING TO FINAL). SAW GULFSTREAM AT OUR 10 O'CLOCK POS. TWR INSTRUCTED US TO BREAK OFF, TURN L IMMEDIATELY. SAW GULFSTREAM INITIALLY TURN TO ITS R, THEN TURN TO ITS L AWAY FROM US. GULFSTREAM LANDED, WE WERE INSTRUCTED TO ESTABLISH 4 MI FINAL FOR RWY 21, WHICH WE DID. LANDED WITHOUT INCIDENT. TCASII WOULD HAVE HELPED. MAY HAVE BEEN FACTOR FOR GULFSTREAM. CONFUSION IN PATTERN AS TO WHERE WE WERE IN SEQUENCE. SHOULD HAVE ASKED CTLR TO CALL OUR TURN TO BASE, THAT WAY NO CONFUSION OVER OUR SEQUENCE AND POS RELATIVE TO OTHER ACFT.

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.

BE20 pilot on downwind leg at sdl had an near midair collision with a G4 reported by the tower on a 5 mi final.