Flight crew of a DC9-30 failed to obtain a taxi clearance prior to taxi out for takeoff.

Attributes
ACN	481980
Time
Date	200008
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : cmh.airport
State Reference	OH
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	DC-9 30
Operating Under FAR Part	Part 121
Flight Phase	ground : taxi
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : multi engine pilot : instrument pilot : commercial
Experience	flight time last 90 days : 210 flight time total : 16000 flight time type : 4000
ASRS Report	481980
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	incursion : taxiway non adherence : far
Independent Detector	other controllera
Resolutory Action	none taken : detected after the fact
Consequence	faa : reviewed incident with flight crew
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Cleared by ground for pushback. After pushback, ground crew was told to 'stand by' when they asked for brakes and disconnect by first officer (SOP until captain talk to them after he sets brakes). This was a relatively new procedure for our company. Ground crew disconnected anyway before captain gave them the ok to do so. Discussion ensued between captain and first officer about procedure not being followed yet. We then taxied to active, contacted tower for takeoff, and were told we never received a taxi clearance. Captain asked if there would be a problem with this and the tower controller said no. This captain had a habit of beginning to taxi before first officer had actually received taxi clearance. This happened several (2-3) times on this trip. He also had a tendency to 'rush' to get off the ground. Both the captain and the first officer, however, missed getting a taxi clearance other than pushback on this occasion. This was also a quick turn, due to a late departure because of a mechanical.

Original NASA ASRS Text

Title: FLC OF A DC9-30 FAILED TO OBTAIN A TAXI CLRNC PRIOR TO TAXI OUT FOR TKOF.

Narrative: CLRED BY GND FOR PUSHBACK. AFTER PUSHBACK, GND CREW WAS TOLD TO 'STAND BY' WHEN THEY ASKED FOR BRAKES AND DISCONNECT BY FO (SOP UNTIL CAPT TALK TO THEM AFTER HE SETS BRAKES). THIS WAS A RELATIVELY NEW PROC FOR OUR COMPANY. GND CREW DISCONNECTED ANYWAY BEFORE CAPT GAVE THEM THE OK TO DO SO. DISCUSSION ENSUED BTWN CAPT AND FO ABOUT PROC NOT BEING FOLLOWED YET. WE THEN TAXIED TO ACTIVE, CONTACTED TWR FOR TKOF, AND WERE TOLD WE NEVER RECEIVED A TAXI CLRNC. CAPT ASKED IF THERE WOULD BE A PROB WITH THIS AND THE TWR CTLR SAID NO. THIS CAPT HAD A HABIT OF BEGINNING TO TAXI BEFORE FO HAD ACTUALLY RECEIVED TAXI CLRNC. THIS HAPPENED SEVERAL (2-3) TIMES ON THIS TRIP. HE ALSO HAD A TENDENCY TO 'RUSH' TO GET OFF THE GND. BOTH THE CAPT AND THE FO, HOWEVER, MISSED GETTING A TAXI CLRNC OTHER THAN PUSHBACK ON THIS OCCASION. THIS WAS ALSO A QUICK TURN, DUE TO A LATE DEP BECAUSE OF A MECHANICAL.

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.