The flight crew took off without knowing clearance and transmitting improper transponder code.

Attributes
ACN	303193
Time
Date	199505
Day	Mon
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : slc
State Reference	UT
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zlc tracon : slc
Operator	common carrier : air carrier
Make Model Name	B727 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	climbout : takeoff climbout : initial ground : preflight
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 180 flight time total : 20000 flight time type : 8000
ASRS Report	303193
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 180 flight time total : 5000 flight time type : 1400
ASRS Report	303194
Events
Anomaly	non adherence : clearance non adherence : far other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : unable
Consequence	faa : reviewed incident with flight crew
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Departure from salt lake city was uneventful except for the fact that I was under the impression we had not received a departure clearance. As we took off and was switched over to departure, the first officer stated we had not received a pre departure clearance. This is supposed to be brought to the cockpit by the agent at departure time. When it is not brought to the cockpit, the first officer calls clearance delivery and verbally gets one. He had not done this, and I was under the impression we had taken off without a clearance, when in fact there was one on file with ZSE. The problem was they had computer problems at the gate we left from and the pre departure clearance never came out.

Original NASA ASRS Text

Title: THE FLC TOOK OFF WITHOUT KNOWING CLRNC AND XMITTING IMPROPER XPONDER CODE.

Narrative: DEP FROM SALT LAKE CITY WAS UNEVENTFUL EXCEPT FOR THE FACT THAT I WAS UNDER THE IMPRESSION WE HAD NOT RECEIVED A DEP CLRNC. AS WE TOOK OFF AND WAS SWITCHED OVER TO DEP, THE FO STATED WE HAD NOT RECEIVED A PDC. THIS IS SUPPOSED TO BE BROUGHT TO THE COCKPIT BY THE AGENT AT DEP TIME. WHEN IT IS NOT BROUGHT TO THE COCKPIT, THE FO CALLS CLRNC DELIVERY AND VERBALLY GETS ONE. HE HAD NOT DONE THIS, AND I WAS UNDER THE IMPRESSION WE HAD TAKEN OFF WITHOUT A CLRNC, WHEN IN FACT THERE WAS ONE ON FILE WITH ZSE. THE PROB WAS THEY HAD COMPUTER PROBS AT THE GATE WE LEFT FROM AND THE PDC NEVER CAME OUT.

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.