Unauthorized runway entry.

Attributes
ACN	204681
Time
Date	199203
Day	Mon
Place
Locale Reference	airport : agc
State Reference	PA
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : corporate
Make Model Name	Small Transport, Low Wing, 2 Turbojet Eng
Flight Phase	ground other : taxi
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 100
ASRS Report	204681
Person 2
Affiliation	Other
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	incursion : runway non adherence : clearance non adherence : far
Independent Detector	other controllera
Resolutory Action	none taken : detected after the fact
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Taxiing out for takeoff runway 10 at agc. 2 light aircraft ahead of us. As we approached the intersection of the east/west taxiway and runway 5/23, the controller called and said 'make your next right turn and you are #1 for takeoff.' still finishing the checklist, I glanced at the radio control and saw both 121.7 (ground) and 121.1 (tower) displayed. A call came in, 'after takeoff, make a left turn to a heading of 360 degrees, and contact departure on 124.75.' I thought the same controller was working both 121.7 and 121.1 as the voices sounded very similar earlier as we taxied in. I asked the copilot to request permission to back taxi on the runway so we could use the full length, looked both ways to clear for traffic and slowly continued to taxi. Only then did the ground controller state 'hold your position and contact the tower.' we now had our nose on runway 10. I contacted tower and was cleared to back taxi and takeoff. The crew made an erroneous assumption-compounded by the fact that they weren't expecting the short cut to the runway and were still finishing up the checklists when the after takeoff information was received. Ground control could have been more specific and said 'hold short of the runway and contact tower.'

Original NASA ASRS Text

Title: UNAUTHORIZED RWY ENTRY.

Narrative: TAXIING OUT FOR TKOF RWY 10 AT AGC. 2 LIGHT ACFT AHEAD OF US. AS WE APCHED THE INTXN OF THE E/W TAXIWAY AND RWY 5/23, THE CTLR CALLED AND SAID 'MAKE YOUR NEXT R TURN AND YOU ARE #1 FOR TKOF.' STILL FINISHING THE CHKLIST, I GLANCED AT THE RADIO CTL AND SAW BOTH 121.7 (GND) AND 121.1 (TWR) DISPLAYED. A CALL CAME IN, 'AFTER TKOF, MAKE A L TURN TO A HDG OF 360 DEGS, AND CONTACT DEP ON 124.75.' I THOUGHT THE SAME CTLR WAS WORKING BOTH 121.7 AND 121.1 AS THE VOICES SOUNDED VERY SIMILAR EARLIER AS WE TAXIED IN. I ASKED THE COPLT TO REQUEST PERMISSION TO BACK TAXI ON THE RWY SO WE COULD USE THE FULL LENGTH, LOOKED BOTH WAYS TO CLR FOR TFC AND SLOWLY CONTINUED TO TAXI. ONLY THEN DID THE GND CTLR STATE 'HOLD YOUR POS AND CONTACT THE TWR.' WE NOW HAD OUR NOSE ON RWY 10. I CONTACTED TWR AND WAS CLRED TO BACK TAXI AND TKOF. THE CREW MADE AN ERRONEOUS ASSUMPTION-COMPOUNDED BY THE FACT THAT THEY WEREN'T EXPECTING THE SHORT CUT TO THE RWY AND WERE STILL FINISHING UP THE CHKLISTS WHEN THE AFTER TKOF INFO WAS RECEIVED. GND CTL COULD HAVE BEEN MORE SPECIFIC AND SAID 'HOLD SHORT OF THE RWY AND CONTACT TWR.'

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.