A B767-300 pushes back from a gate position into the apron area without pushback clearance. The first officer copied the wrong frequency for the apron controller.

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Attributes
ACN	399570
Time
Date	199804
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : fra
State Reference	FO
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B767-300 and 300 ER
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	ground : preflight other
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	ground : holding ground other : taxi
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	other personnel other
Qualification	pilot : instrument pilot : commercial pilot : atp
Experience	flight time last 90 days : 180 flight time total : 10300 flight time type : 4200
ASRS Report	399570
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 210 flight time total : 6000 flight time type : 250
ASRS Report	399374
Events
Anomaly	conflict : ground less severe non adherence : published procedure non adherence : clearance non adherence other other anomaly other
Independent Detector	other controllera other other : unspecified
Resolutory Action	none taken : detected after the fact
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

After receiving our clearance from frankfurt ground control frequency 121.9, clearance informed us that we were cleared to 'start up and push' and to call apron on 121.85. We thought we had clearance to push and start engines and while pushing back we tried to contact apron control on 121.85 to keep him informed. There was no answer on 121.85, so we then tried 121.7 and they were unable to assist us on that frequency. We then went back to frequency 121.9, and they said to call apron on 121.95. On 121.95 apron control said we should have contacted them before we pushed and we did not have clearance to push. Apron said to always contact them first before pushing back. Supplemental information from acn 399374: were told to go to 121.95 where we were chastised for moving the aircraft without clearance. Apparently we caused a B737 behind us to wait for us to taxi.

Original NASA ASRS Text

Title: A B767-300 PUSHES BACK FROM A GATE POS INTO THE APRON AREA WITHOUT PUSHBACK CLRNC. THE FO COPIED THE WRONG FREQ FOR THE APRON CTLR.

Narrative: AFTER RECEIVING OUR CLRNC FROM FRANKFURT GND CTL FREQ 121.9, CLRNC INFORMED US THAT WE WERE CLRED TO 'START UP AND PUSH' AND TO CALL APRON ON 121.85. WE THOUGHT WE HAD CLRNC TO PUSH AND START ENGS AND WHILE PUSHING BACK WE TRIED TO CONTACT APRON CTL ON 121.85 TO KEEP HIM INFORMED. THERE WAS NO ANSWER ON 121.85, SO WE THEN TRIED 121.7 AND THEY WERE UNABLE TO ASSIST US ON THAT FREQ. WE THEN WENT BACK TO FREQ 121.9, AND THEY SAID TO CALL APRON ON 121.95. ON 121.95 APRON CTL SAID WE SHOULD HAVE CONTACTED THEM BEFORE WE PUSHED AND WE DID NOT HAVE CLRNC TO PUSH. APRON SAID TO ALWAYS CONTACT THEM FIRST BEFORE PUSHING BACK. SUPPLEMENTAL INFO FROM ACN 399374: WERE TOLD TO GO TO 121.95 WHERE WE WERE CHASTISED FOR MOVING THE ACFT WITHOUT CLRNC. APPARENTLY WE CAUSED A B737 BEHIND US TO WAIT FOR US TO TAXI.

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.