Pilot of a piper PA31 inadvertently taxied onto an active runway due to unfamiliarity with the txwys, together with changes due to construction, causing confliction with saab SF340 taxiing onto the runway.

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Attributes
ACN	480820
Time
Date	200008
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : grb.airport
State Reference	WI
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	PA-31 Navajo Chieftan/Mojave/Navajo T1020
Operating Under FAR Part	Part 91
Flight Phase	ground : taxi
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tower : grb.tower
Operator	common carrier : air carrier
Make Model Name	SF 340A
Operating Under FAR Part	Part 121
Flight Phase	ground : taxi
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : multi engine pilot : commercial pilot : instrument
Experience	flight time last 90 days : 25 flight time total : 600 flight time type : 100
ASRS Report	480820
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : ground less severe incursion : runway non adherence : clearance
Independent Detector	other flight crewa
Resolutory Action	flight crew : returned to original clearance other
Consequence	Other
Supplementary
Problem Areas	Flight Crew Human Performance Airport ATC Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

At green bay airport there are a number of txwys closed due to construction. I received taxi instructions to runway 6 by intxns D2-dj hold short runway 36. The ground controller did not mention taxiway a which connects taxiway D and taxiway J. I thought taxiway D would be on the other side of runway 6. After pulling onto D2 I did not see the taxiway D which was an immediate right turn after D2. When I reached runway 6 I noticed no taxiway on the other side and made an immediate right turn onto taxiway a. An air carrier Y, SF340, was on the runway and was turning on as I pulled off of runway 6. Factors were the construction, unfamiliarity with taxi route, and controller not mentioning full taxi route.

Original NASA ASRS Text

Title: PLT OF A PIPER PA31 INADVERTENTLY TAXIED ONTO AN ACTIVE RWY DUE TO UNFAMILIARITY WITH THE TXWYS, TOGETHER WITH CHANGES DUE TO CONSTRUCTION, CAUSING CONFLICTION WITH SAAB SF340 TAXIING ONTO THE RWY.

Narrative: AT GREEN BAY ARPT THERE ARE A NUMBER OF TXWYS CLOSED DUE TO CONSTRUCTION. I RECEIVED TAXI INSTRUCTIONS TO RWY 6 BY INTXNS D2-DJ HOLD SHORT RWY 36. THE GND CTLR DID NOT MENTION TXWY A WHICH CONNECTS TXWY D AND TXWY J. I THOUGHT TXWY D WOULD BE ON THE OTHER SIDE OF RWY 6. AFTER PULLING ONTO D2 I DID NOT SEE THE TXWY D WHICH WAS AN IMMEDIATE R TURN AFTER D2. WHEN I REACHED RWY 6 I NOTICED NO TXWY ON THE OTHER SIDE AND MADE AN IMMEDIATE R TURN ONTO TXWY A. AN ACR Y, SF340, WAS ON THE RWY AND WAS TURNING ON AS I PULLED OFF OF RWY 6. FACTORS WERE THE CONSTRUCTION, UNFAMILIARITY WITH TAXI RTE, AND CTLR NOT MENTIONING FULL TAXI RTE.

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.