Vehicle driver unauthorized runway entry.

Attributes
ACN	165902
Time
Date	199012
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : tvl
State Reference	MI
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : mfr
Make Model Name	Small Aircraft, High Wing, 1 Eng, Fixed Gear
Flight Phase	landing other
Person 1
Affiliation	government : faa
Function	controller : local
Qualification	controller : non radar
Experience	controller military : 3 controller radar : 14
ASRS Report	165902
Person 2
Affiliation	government : faa
Function	controller : ground
Qualification	controller : non radar
Events
Anomaly	incursion : runway non adherence : clearance
Independent Detector	other controllera
Resolutory Action	none taken : detected after the fact
Consequence	Other
Supplementary
Air Traffic Incident	Intra Facility Coordination Failure other

Narrative:

I was working the local control position. Ground control advised me that he had a snow plow that wanted to work along the edge of runway 28. The plow was on the east side of runway 18. The plow wanted to cross runway 18 and start his work on runway 28, west of runway 18 (I was landing and departing on runway 18 only). The 2 runway intersect. I told the ground controller to drive on runway 28 cross runway 18 westbound but then hold short of runway 18. When the plow turned eastbound on runway 28, when the plow was clear runway 18, I cleared small aircraft X to land on runway 18. I did a runway scan when small aircraft X was on short final and saw that the plow had xed runway 18 again eastbound. The plow was already clear of the runway intersection when the aircraft xed the threshold (not be much though). The driver admitted that he had forgot the restriction to hold short eastbound on runway 28. I think driver fatigue was a major factor. They were just finishing clearing up a major winter storm and had spent many hours in the trucks. Remember, always scan your runways, especially when there is a lot of snow removal equipment out and about. Besides the fact that 10-12 hours in a truck plowing can effect ones judgement, the trucks are very loud and sometimes you may not be heard completely.

Original NASA ASRS Text

Title: VEHICLE DRIVER UNAUTH RWY ENTRY.

Narrative: I WAS WORKING THE LCL CTL POS. GND CTL ADVISED ME THAT HE HAD A SNOW PLOW THAT WANTED TO WORK ALONG THE EDGE OF RWY 28. THE PLOW WAS ON THE E SIDE OF RWY 18. THE PLOW WANTED TO CROSS RWY 18 AND START HIS WORK ON RWY 28, W OF RWY 18 (I WAS LNDG AND DEPARTING ON RWY 18 ONLY). THE 2 RWY INTERSECT. I TOLD THE GND CTLR TO DRIVE ON RWY 28 CROSS RWY 18 WBND BUT THEN HOLD SHORT OF RWY 18. WHEN THE PLOW TURNED EBND ON RWY 28, WHEN THE PLOW WAS CLR RWY 18, I CLRED SMA X TO LAND ON RWY 18. I DID A RWY SCAN WHEN SMA X WAS ON SHORT FINAL AND SAW THAT THE PLOW HAD XED RWY 18 AGAIN EBND. THE PLOW WAS ALREADY CLR OF THE RWY INTXN WHEN THE ACFT XED THE THRESHOLD (NOT BE MUCH THOUGH). THE DRIVER ADMITTED THAT HE HAD FORGOT THE RESTRICTION TO HOLD SHORT EBND ON RWY 28. I THINK DRIVER FATIGUE WAS A MAJOR FACTOR. THEY WERE JUST FINISHING CLRING UP A MAJOR WINTER STORM AND HAD SPENT MANY HRS IN THE TRUCKS. REMEMBER, ALWAYS SCAN YOUR RWYS, ESPECIALLY WHEN THERE IS A LOT OF SNOW REMOVAL EQUIP OUT AND ABOUT. BESIDES THE FACT THAT 10-12 HRS IN A TRUCK PLOWING CAN EFFECT ONES JUDGEMENT, THE TRUCKS ARE VERY LOUD AND SOMETIMES YOU MAY NOT BE HEARD COMPLETELY.

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.