An air carrier medium large transport took off without an airways clearance.

Attributes
ACN	271259
Time
Date	199405
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : phl
State Reference	PA
Altitude	agl bound lower : 0 agl bound upper : 500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : phl
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	climbout : takeoff climbout : initial ground : preflight
Route In Use	departure other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument pilot : cfi pilot : atp
Experience	flight time last 90 days : 200 flight time total : 6700 flight time type : 200
ASRS Report	271259
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	non adherence : clearance non adherence : far other anomaly other other spatial deviation
Independent Detector	other controllera other flight crewa
Resolutory Action	other other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

After takeoff from phl, we were informed by departure control that we were using the incorrect code in the transponder. We were told to squawk the appropriate code which they gave us. We then realized that we had failed to receive the clearance via the pre departure clearance system and subsequently took off without a clearance. The flight continued uneventfully on the filed flight plan.

Original NASA ASRS Text

Title: AN ACR MLG TOOK OFF WITHOUT AN AIRWAYS CLRNC.

Narrative: AFTER TKOF FROM PHL, WE WERE INFORMED BY DEP CTL THAT WE WERE USING THE INCORRECT CODE IN THE XPONDER. WE WERE TOLD TO SQUAWK THE APPROPRIATE CODE WHICH THEY GAVE US. WE THEN REALIZED THAT WE HAD FAILED TO RECEIVE THE CLRNC VIA THE PDC SYS AND SUBSEQUENTLY TOOK OFF WITHOUT A CLRNC. THE FLT CONTINUED UNEVENTFULLY ON THE FILED FLT PLAN.

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.