Small aircraft crossed runway without clearance while another small aircraft was landing.

Attributes
ACN	215877
Time
Date	199207
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : dvt
State Reference	AZ
Altitude	agl bound lower : 0 agl bound upper : 0
Aircraft 1
Operator	general aviation : personal
Make Model Name	Small Aircraft, Low Wing, 1 Eng, Fixed Gear
Flight Phase	ground other : taxi
Flight Plan	None
Aircraft 2
Operator	general aviation : personal
Make Model Name	Small Aircraft, High Wing, 1 Eng, Fixed Gear
Flight Phase	climbout : takeoff landing other
Flight Plan	None
Person 1
Affiliation	government : faa
Function	controller : local
Qualification	controller : non radar
Experience	controller non radar : 7
ASRS Report	215877
Person 2
Affiliation	government : faa
Function	controller : ground
Qualification	controller : non radar
Events
Anomaly	conflict : ground less severe incursion : runway non adherence : clearance other anomaly other
Independent Detector	other controllera
Resolutory Action	none taken : detected after the fact
Consequence	Other
Miss Distance	horizontal : 1500
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation
Situations
Airport	other physical facility

Narrative:

I was working local control north and south when a runway incursion occurred. The 2 aircraft involved were small aircraft X and small aircraft Y. The pilot of small aircraft X was on ground control frequency receiving taxi instructions. Small aircraft Y was on final for runway 7L. I had just cleared the pilot of small aircraft Y for a touch and go landing on runway 7L. The ground controller coordinated a runway crossing with me for runway 7L. This crossing involved small aircraft X. Small aircraft X crossed runway 7L without ATC authorization. I later noticed small aircraft X crossing runway 7L in front of small aircraft Y who was making a touch and go landing. Small aircraft Y was on the runway at this time and appeared to be pwring up for departure when small aircraft X aircraft crossed from left to right in front of him. This resulted in a loss of runway separation. The signs to assist pilots in identing runways and taxiways, etc, are often hidden by weeds. Some of the signs at dvt are not FAA approved, they are non-standard signs. This has led to incursions in the post. I believe this fact may be a contributing factor.

Original NASA ASRS Text

Title: SMA CROSSED RWY WITHOUT CLRNC WHILE ANOTHER SMA WAS LNDG.

Narrative: I WAS WORKING LCL CTL N AND S WHEN A RWY INCURSION OCCURRED. THE 2 ACFT INVOLVED WERE SMA X AND SMA Y. THE PLT OF SMA X WAS ON GND CTL FREQ RECEIVING TAXI INSTRUCTIONS. SMA Y WAS ON FINAL FOR RWY 7L. I HAD JUST CLRED THE PLT OF SMA Y FOR A TOUCH AND GO LNDG ON RWY 7L. THE GND CTLR COORDINATED A RWY XING WITH ME FOR RWY 7L. THIS XING INVOLVED SMA X. SMA X CROSSED RWY 7L WITHOUT ATC AUTHORIZATION. I LATER NOTICED SMA X XING RWY 7L IN FRONT OF SMA Y WHO WAS MAKING A TOUCH AND GO LNDG. SMA Y WAS ON THE RWY AT THIS TIME AND APPEARED TO BE PWRING UP FOR DEP WHEN SMA X ACFT CROSSED FROM L TO R IN FRONT OF HIM. THIS RESULTED IN A LOSS OF RWY SEPARATION. THE SIGNS TO ASSIST PLTS IN IDENTING RWYS AND TAXIWAYS, ETC, ARE OFTEN HIDDEN BY WEEDS. SOME OF THE SIGNS AT DVT ARE NOT FAA APPROVED, THEY ARE NON-STANDARD SIGNS. THIS HAS LED TO INCURSIONS IN THE POST. I BELIEVE THIS FACT MAY BE A CONTRIBUTING FACTOR.

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.