Flight crew of light transport commuter taxied onto active runway, no contact with local controller.

Attributes
ACN	152103
Time
Date	199007
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : cpr
State Reference	WY
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : dca
Operator	common carrier : air carrier
Make Model Name	Light Transport, Low Wing, 2 Turboprop Eng
Flight Phase	ground other : taxi
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : cfi pilot : commercial pilot : instrument
Experience	flight time last 90 days : 120 flight time total : 2300 flight time type : 90
ASRS Report	152103
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	incursion : runway other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : anomaly accepted
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation
Situations
ATC Facility	procedure or policy : unspecified

Narrative:

The ground controller gave me clearance to taxi to runway 21. I asked him if I should back-taxi down the runway. He said, 'yes you will!' I failed to switch to local control. I thought the same man was working both local and ground frequencys. There was no traffic in the area and no communications were necessary. I was going to switch to local, but I remembered when I landed off the previous flight, when I was taxiing in he said monitor ground. No clearance to enter the movement area, so I called ground control and he sounded upset that I bothered him again.

Original NASA ASRS Text

Title: FLT CREW OF LTT COMMUTER TAXIED ONTO ACTIVE RWY, NO CONTACT WITH LCL CTLR.

Narrative: THE GND CTLR GAVE ME CLRNC TO TAXI TO RWY 21. I ASKED HIM IF I SHOULD BACK-TAXI DOWN THE RWY. HE SAID, 'YES YOU WILL!' I FAILED TO SWITCH TO LCL CTL. I THOUGHT THE SAME MAN WAS WORKING BOTH LCL AND GND FREQS. THERE WAS NO TFC IN THE AREA AND NO COMS WERE NECESSARY. I WAS GOING TO SWITCH TO LCL, BUT I REMEMBERED WHEN I LANDED OFF THE PREVIOUS FLT, WHEN I WAS TAXIING IN HE SAID MONITOR GND. NO CLRNC TO ENTER THE MOVEMENT AREA, SO I CALLED GND CTL AND HE SOUNDED UPSET THAT I BOTHERED HIM AGAIN.

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.