An small aircraft cuts into pattern in front of twin at tower controled airport.

Attributes
ACN	249281
Time
Date	199308
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : gon
State Reference	CT
Altitude	msl bound lower : 500 msl bound upper : 500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : gon
Operator	general aviation : instructional
Make Model Name	Small Aircraft, Low Wing, 2 Eng, Retractable Gear
Flight Phase	descent : approach landing other other
Flight Plan	None
Aircraft 2
Make Model Name	Small Aircraft, Low Wing, 1 Eng, Fixed Gear
Flight Phase	descent : approach landing other
Person 1
Affiliation	Other
Function	instruction : instructor
Qualification	pilot : instrument pilot : commercial pilot : cfi
Experience	flight time last 90 days : 300 flight time total : 1100 flight time type : 300
ASRS Report	249281
Person 2
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : private pilot : instrument
Events
Anomaly	conflict : airborne less severe non adherence : clearance
Independent Detector	other controllera other flight crewa
Resolutory Action	controller : issued new clearance none taken : anomaly accepted
Consequence	Other
Miss Distance	vertical : 1000
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

I was instructing in small aircraft twin Z in left closed traffic at groton airport (gon) during the operation of the control tower and under ATC control. I was sequenced behind an small aircraft X which I had in sight while on 2 mi right base. Upon calling the small aircraft X in sight, I was 'cleared to land, #2' on runway 23. Meanwhile, an aircraft small aircraft Y had called the tower, reporting '5 east for the right base to runway 23.' when told by the tower that this would set him up for a left base, the pilot did not respond. About to turn final, I saw this unsequenced traffic cutting in front of me on final. Tower asked him what he was doing. He responded that he was ahead of me and was landing. I said over the frequency 'too late, I'll be #2.' the other pilot reiterated over the frequency that he was well in front of me. I interjected on frequency that he was following the wrong traffic, but he was cleared to land by tower, and I was sequenced #2. Upon seeking out the pilot on the ground, he showed no remorse or awareness of the danger of his action. He blamed the incident on the tower and also stated that there had been 'plenty of room' between us. In my estimation there was perhaps 1000 ft vertical separation and '0' ft horizontal.

Original NASA ASRS Text

Title: AN SMA CUTS INTO PATTERN IN FRONT OF TWIN AT TWR CTLED ARPT.

Narrative: I WAS INSTRUCTING IN SMA TWIN Z IN L CLOSED TFC AT GROTON ARPT (GON) DURING THE OP OF THE CTL TWR AND UNDER ATC CTL. I WAS SEQUENCED BEHIND AN SMA X WHICH I HAD IN SIGHT WHILE ON 2 MI R BASE. UPON CALLING THE SMA X IN SIGHT, I WAS 'CLRED TO LAND, #2' ON RWY 23. MEANWHILE, AN ACFT SMA Y HAD CALLED THE TWR, RPTING '5 E FOR THE R BASE TO RWY 23.' WHEN TOLD BY THE TWR THAT THIS WOULD SET HIM UP FOR A L BASE, THE PLT DID NOT RESPOND. ABOUT TO TURN FINAL, I SAW THIS UNSEQUENCED TFC CUTTING IN FRONT OF ME ON FINAL. TWR ASKED HIM WHAT HE WAS DOING. HE RESPONDED THAT HE WAS AHEAD OF ME AND WAS LNDG. I SAID OVER THE FREQ 'TOO LATE, I'LL BE #2.' THE OTHER PLT REITERATED OVER THE FREQ THAT HE WAS WELL IN FRONT OF ME. I INTERJECTED ON FREQ THAT HE WAS FOLLOWING THE WRONG TFC, BUT HE WAS CLRED TO LAND BY TWR, AND I WAS SEQUENCED #2. UPON SEEKING OUT THE PLT ON THE GND, HE SHOWED NO REMORSE OR AWARENESS OF THE DANGER OF HIS ACTION. HE BLAMED THE INCIDENT ON THE TWR AND ALSO STATED THAT THERE HAD BEEN 'PLENTY OF ROOM' BTWN US. IN MY ESTIMATION THERE WAS PERHAPS 1000 FT VERT SEPARATION AND '0' FT HORIZ.

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.