An small transport cut an small aircraft out of the pattern at a controled airport.

Attributes
ACN	257643
Time
Date	199311
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : mmu
State Reference	NJ
Altitude	agl bound lower : 1000 agl bound upper : 1000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : mmu
Operator	general aviation : personal
Make Model Name	Small Transport, Low Wing, 2 Recip Eng
Flight Phase	other
Flight Plan	None
Aircraft 2
Make Model Name	Small Aircraft, Low Wing, 1 Eng, Fixed Gear
Flight Phase	other
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : instrument pilot : commercial
Experience	flight time last 90 days : 40 flight time total : 900 flight time type : 200
ASRS Report	257643
Person 2
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : private
Events
Anomaly	conflict : nmac non adherence : clearance non adherence : far other anomaly other
Independent Detector	other controllera
Resolutory Action	flight crew : took evasive action
Consequence	faa : reviewed incident with flight crew
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Flying an small transport on a right downwind (120 KTS) I was told my only traffic was an small aircraft on a 2 1/2 mi base to final. I did not see the traffic but turned a base myself at 2 1/2 mi. I thought plenty of time passed and that the small aircraft was close and low on final. The tower controller then asked me if I had the traffic. I replied no. He said 'you just cut him off. ' I looked to my left and there was the small aircraft. I feel the contributing factors to this incident were an initial position report on the small aircraft that was obviously inaccurate, together with my turn to base without first seeing my traffic.

Original NASA ASRS Text

Title: AN SMT CUT AN SMA OUT OF THE PATTERN AT A CTLED ARPT.

Narrative: FLYING AN SMT ON A R DOWNWIND (120 KTS) I WAS TOLD MY ONLY TFC WAS AN SMA ON A 2 1/2 MI BASE TO FINAL. I DID NOT SEE THE TFC BUT TURNED A BASE MYSELF AT 2 1/2 MI. I THOUGHT PLENTY OF TIME PASSED AND THAT THE SMA WAS CLOSE AND LOW ON FINAL. THE TWR CTLR THEN ASKED ME IF I HAD THE TFC. I REPLIED NO. HE SAID 'YOU JUST CUT HIM OFF. ' I LOOKED TO MY L AND THERE WAS THE SMA. I FEEL THE CONTRIBUTING FACTORS TO THIS INCIDENT WERE AN INITIAL POS RPT ON THE SMA THAT WAS OBVIOUSLY INACCURATE, TOGETHER WITH MY TURN TO BASE WITHOUT FIRST SEEING MY TFC.

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.