Possible missequencing of air carrier X and small aircraft Y. See and avoid concept in arsa.

Attributes
ACN	194873
Time
Date	199111
Day	Sun
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : isp
State Reference	NY
Altitude	msl bound lower : 1100 msl bound upper : 1100
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : n90 tower : isp
Operator	common carrier : air carrier
Make Model Name	Light Transport, Low Wing, 2 Turboprop Eng
Flight Phase	descent : approach
Flight Plan	IFR
Aircraft 2
Operator	general aviation : personal
Make Model Name	Small Aircraft, Low Wing, 1 Eng, Fixed Gear
Flight Phase	descent : approach
Route In Use	enroute : on vectors
Person 1
Affiliation	government : faa
Function	controller : local
Qualification	controller : non radar
ASRS Report	194873
Person 2
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
Events
Anomaly	conflict : airborne less severe
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance other
Consequence	faa : investigated
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	other

Narrative:

Air carrier on 4 mi final runway 33L. Air carrier X 6 mi final runway 33L. Small aircraft Y put on a 240 degree heading to airport 3 mi right base entry not talking to tower. Had to get communication from N90 because small aircraft Y was heading for air carrier X on intercept. I had to turn small aircraft Y for runway 33R. He was giving the wrong traffic to follow. The air carrier X would have ran over the small aircraft Y or had to take evasive action. I believe that there was a system error or pilot deviation. I have requested my supervisor to pull the N90 tape and radar dart.

Original NASA ASRS Text

Title: POSSIBLE MISSEQUENCING OF ACR X AND SMA Y. SEE AND AVOID CONCEPT IN ARSA.

Narrative: ACR ON 4 MI FINAL RWY 33L. ACR X 6 MI FINAL RWY 33L. SMA Y PUT ON A 240 DEG HDG TO ARPT 3 MI R BASE ENTRY NOT TALKING TO TWR. HAD TO GET COM FROM N90 BECAUSE SMA Y WAS HDG FOR ACR X ON INTERCEPT. I HAD TO TURN SMA Y FOR RWY 33R. HE WAS GIVING THE WRONG TFC TO FOLLOW. THE ACR X WOULD HAVE RAN OVER THE SMA Y OR HAD TO TAKE EVASIVE ACTION. I BELIEVE THAT THERE WAS A SYS ERROR OR PLTDEV. I HAVE REQUESTED MY SUPVR TO PULL THE N90 TAPE AND RADAR DART.

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.