Medium large transport departs without pre departure clearance.

Attributes
ACN	276532
Time
Date	199407
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : pit
State Reference	PA
Altitude	agl bound lower : 100 agl bound upper : 500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : pit
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	climbout : takeoff climbout : initial
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : cfi pilot : instrument
Experience	flight time last 90 days : 240 flight time total : 13000 flight time type : 7000
ASRS Report	276532
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	non adherence : far non adherence : published procedure other anomaly other
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:

On takeoff, tower handed off to departure frequency. Departure frequency tuned in was 124.95 which was contacted without any result. Went back to tower frequency of 128.3 for pit runway 28R. Asked for departure frequency number. Tower gave 124.75. 124.75 was contacted for departure. 124.75 asked us to reset the transponder code, we did, and acknowledged our check in. No further incidents. After thinking about the event, maybe the takeoff was made without the pre departure clearance.

Original NASA ASRS Text

Title: MLG DEPARTS WITHOUT PDC.

Narrative: ON TKOF, TWR HANDED OFF TO DEP FREQ. DEP FREQ TUNED IN WAS 124.95 WHICH WAS CONTACTED WITHOUT ANY RESULT. WENT BACK TO TWR FREQ OF 128.3 FOR PIT RWY 28R. ASKED FOR DEP FREQ NUMBER. TWR GAVE 124.75. 124.75 WAS CONTACTED FOR DEP. 124.75 ASKED US TO RESET THE XPONDER CODE, WE DID, AND ACKNOWLEDGED OUR CHK IN. NO FURTHER INCIDENTS. AFTER THINKING ABOUT THE EVENT, MAYBE THE TKOF WAS MADE WITHOUT THE PDC.

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.