Small aircraft X non adherence to ATC instruction.

Attributes
ACN	165698
Time
Date	199012
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : swf
State Reference	NY
Altitude	msl bound lower : 0 msl bound upper : 100
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : swf
Operator	general aviation : personal
Make Model Name	Small Aircraft, Low Wing, 1 Eng, Fixed Gear
Flight Phase	landing : go around landing other
Flight Plan	VFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Light Transport
Flight Phase	ground : holding ground other : taxi
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : local
Qualification	controller : non radar
ASRS Report	165698
Person 2
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : private
Events
Anomaly	conflict : ground less severe non adherence : clearance
Independent Detector	other flight crewa
Resolutory Action	other
Consequence	Other
Miss Distance	horizontal : 3000 vertical : 100
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Approximately xx:00 local time small aircraft X called 6 mi southwest for touch and go's information was told to report entering left downwind runway 27. At xx:08L air carrier Y called ready for takeoff. I checked the final approach area and runway, observing no other aircraft, then cleared air carrier Y for takeoff runway 27. As air carrier Y started to cross hold line, small aircraft X announced that he was going around. As small aircraft X pulled up I saw him approximately 1/2 mi from end of threshold extension. Air carrier Y saw (and heard) him and stopped with nose wheel on runway edge line. With small aircraft X on downwind air carrier Y departed. Next time on final small aircraft X was very low again. I had not seen him the first time because he was below the tree line (as seen from tower). As it turns out the pilot was making his approach to the east end of the 2000' displaced threshold. I explained the displaced landing threshold and the VASI. On succeeding approachs small aircraft X was on the VASI G/south.

Original NASA ASRS Text

Title: SMA X NON ADHERENCE TO ATC INSTRUCTION.

Narrative: APPROX XX:00 LCL TIME SMA X CALLED 6 MI SW FOR TOUCH AND GO'S INFO WAS TOLD TO RPT ENTERING L DOWNWIND RWY 27. AT XX:08L ACR Y CALLED READY FOR TKOF. I CHKED THE FINAL APCH AREA AND RWY, OBSERVING NO OTHER ACFT, THEN CLRED ACR Y FOR TKOF RWY 27. AS ACR Y STARTED TO CROSS HOLD LINE, SMA X ANNOUNCED THAT HE WAS GOING AROUND. AS SMA X PULLED UP I SAW HIM APPROX 1/2 MI FROM END OF THRESHOLD EXTENSION. ACR Y SAW (AND HEARD) HIM AND STOPPED WITH NOSE WHEEL ON RWY EDGE LINE. WITH SMA X ON DOWNWIND ACR Y DEPARTED. NEXT TIME ON FINAL SMA X WAS VERY LOW AGAIN. I HAD NOT SEEN HIM THE FIRST TIME BECAUSE HE WAS BELOW THE TREE LINE (AS SEEN FROM TWR). AS IT TURNS OUT THE PLT WAS MAKING HIS APCH TO THE E END OF THE 2000' DISPLACED THRESHOLD. I EXPLAINED THE DISPLACED LNDG THRESHOLD AND THE VASI. ON SUCCEEDING APCHS SMA X WAS ON THE VASI G/S.

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.