Small aircraft X attempted landing on occupied runway. Issued go around, had near midair collision w...

Attributes
ACN	274273
Time
Date	199406
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : ykm
State Reference	WA
Altitude	agl bound lower : 0 agl bound upper : 150
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : ykm
Operator	general aviation : personal
Make Model Name	PA-34-200 Seneca I
Operating Under FAR Part	Part 91
Flight Phase	descent : approach landing : go around
Flight Plan	VFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 91
Flight Phase	ground : holding
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : local
Qualification	controller : radar
Experience	controller non radar : 4 controller radar : 2
ASRS Report	274273
Person 2
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : private
Events
Anomaly	conflict : nmac conflict : ground critical non adherence : far non adherence : clearance
Independent Detector	other flight crewa
Resolutory Action	controller : issued new clearance other
Consequence	Other
Miss Distance	horizontal : 0 vertical : 150
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

I was working local control at yakima. I had received a call from a seneca X inbound from the southwest. The seneca was directed to enter a left downwind for runway 27 and report the downwind. Subsequently, I had a bonanza enter the traffic pattern from the north and land on runway 27, and was arranging for IFR clrncs for 3 aircraft taxiing out. I had worked 1 IFR departure out and had a second 'in position' on runway 27 awaiting IFR release. I went to look to the southwest for binoculars to find the seneca since it seemed to me that I should have had a downwind report. At that point, the seneca radioed that he would overfly the aircraft Y that was in position on the runway. I immediately looked to the end of the runway and saw that the seneca was over the light lane. I issued a go around to the seneca, which he executed and entered left traffic for runway 4. It's important to note that, after the initial contact by the seneca, he reported that he would actually be looking for a stop and go because he had a loose door latch. I'm not sure if the distraction caused the pilot of the seneca to forget to call the downwind report. Perhaps if I had not been busy with ground control and clearance delivery duties I would have noticed the aircraft sooner. Tower controllers at lower volume facilities rely heavily on pilot reports for traffic sequencing. Failure to make these reports can result in serious degradation of safety.

Original NASA ASRS Text

Title: SMA X ATTEMPTED LNDG ON OCCUPIED RWY. ISSUED GAR, HAD NMAC WITH ACFT Y IN POS ON RWY. NMAC. PLTDEV.

Narrative: I WAS WORKING LCL CTL AT YAKIMA. I HAD RECEIVED A CALL FROM A SENECA X INBOUND FROM THE SW. THE SENECA WAS DIRECTED TO ENTER A L DOWNWIND FOR RWY 27 AND RPT THE DOWNWIND. SUBSEQUENTLY, I HAD A BONANZA ENTER THE TFC PATTERN FROM THE N AND LAND ON RWY 27, AND WAS ARRANGING FOR IFR CLRNCS FOR 3 ACFT TAXIING OUT. I HAD WORKED 1 IFR DEP OUT AND HAD A SECOND 'IN POS' ON RWY 27 AWAITING IFR RELEASE. I WENT TO LOOK TO THE SW FOR BINOCULARS TO FIND THE SENECA SINCE IT SEEMED TO ME THAT I SHOULD HAVE HAD A DOWNWIND RPT. AT THAT POINT, THE SENECA RADIOED THAT HE WOULD OVERFLY THE ACFT Y THAT WAS IN POS ON THE RWY. I IMMEDIATELY LOOKED TO THE END OF THE RWY AND SAW THAT THE SENECA WAS OVER THE LIGHT LANE. I ISSUED A GAR TO THE SENECA, WHICH HE EXECUTED AND ENTERED L TFC FOR RWY 4. IT'S IMPORTANT TO NOTE THAT, AFTER THE INITIAL CONTACT BY THE SENECA, HE RPTED THAT HE WOULD ACTUALLY BE LOOKING FOR A STOP AND GO BECAUSE HE HAD A LOOSE DOOR LATCH. I'M NOT SURE IF THE DISTR CAUSED THE PLT OF THE SENECA TO FORGET TO CALL THE DOWNWIND RPT. PERHAPS IF I HAD NOT BEEN BUSY WITH GND CTL AND CLRNC DELIVERY DUTIES I WOULD HAVE NOTICED THE ACFT SOONER. TWR CTLRS AT LOWER VOLUME FACILITIES RELY HEAVILY ON PLT RPTS FOR TFC SEQUENCING. FAILURE TO MAKE THESE RPTS CAN RESULT IN SERIOUS DEGRADATION OF SAFETY.

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.

Small aircraft X attempted landing on occupied runway. Issued go around, had near midair collision with aircraft Y in position on runway. Near midair collision. Pilot deviation.