B777 flight crew acknowledge lfff controller climb clearance which is challenged by another lfff controller after a questioned verified frequency change.

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Attributes
ACN	506340
Time
Date	200103
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	intersection : amoga
State Reference	FO
Altitude	msl bound lower : 10000 msl bound upper : 11000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : elp.tower
Operator	common carrier : air carrier
Make Model Name	B777 Undifferentiated or Other Model
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 180 flight time total : 20000 flight time type : 750
ASRS Report	506340
Events
Anomaly	altitude deviation : excursion from assigned altitude non adherence : clearance non adherence : published procedure
Resolutory Action	controller : issued advisory controller : issued new clearance
Consequence	faa : reviewed incident with flight crew
Supplementary
Problem Areas	Environmental Factor Flight Crew Human Performance Airspace Structure ATC Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Departure paris (cdg) on amoga SID from runway 27L, SID restricts to fl 100. We were level at fl 100 and were cleared to fl 110. All 3 pilots heard this. We selected fl 110, double pointed to it and then climbed to FL110. Also, we readback fl 110. This instruction was given by a male controller. He then gave us a frequency change on which we could make no contact. When we returned to the previous frequency, a controller said to climb and maintain FL180, but you should have been at FL100. Sounded like there may have been a conflict of altitude between controller, but nothing further was said, and we were handed off to another controller who cleared us to a higher altitude. We were fully automated in LNAV and VNAV, WX was VMC and did not see any other aircraft in our area. ATC in france was having a controllers strike on this day. Maybe a controller change or mis-briefed to the incoming controller had something to do with it. There did seem to be some doubt in her voice.

Original NASA ASRS Text

Title: B777 FLC ACKNOWLEDGE LFFF CTLR CLIMB CLRNC WHICH IS CHALLENGED BY ANOTHER LFFF CTLR AFTER A QUESTIONED VERIFIED FREQ CHANGE.

Narrative: DEP PARIS (CDG) ON AMOGA SID FROM RWY 27L, SID RESTRICTS TO FL 100. WE WERE LEVEL AT FL 100 AND WERE CLRED TO FL 110. ALL 3 PLTS HEARD THIS. WE SELECTED FL 110, DOUBLE POINTED TO IT AND THEN CLIMBED TO FL110. ALSO, WE READBACK FL 110. THIS INSTRUCTION WAS GIVEN BY A MALE CTLR. HE THEN GAVE US A FREQUENCY CHANGE ON WHICH WE COULD MAKE NO CONTACT. WHEN WE RETURNED TO THE PREVIOUS FREQUENCY, A CTLR SAID TO CLIMB AND MAINTAIN FL180, BUT YOU SHOULD HAVE BEEN AT FL100. SOUNDED LIKE THERE MAY HAVE BEEN A CONFLICT OF ALT BETWEEN CTLR, BUT NOTHING FURTHER WAS SAID, AND WE WERE HANDED OFF TO ANOTHER CTLR WHO CLRED US TO A HIGHER ALT. WE WERE FULLY AUTOMATED IN LNAV AND VNAV, WX WAS VMC AND DID NOT SEE ANY OTHER ACFT IN OUR AREA. ATC IN FRANCE WAS HAVING A CTLRS STRIKE ON THIS DAY. MAYBE A CTLR CHANGE OR MIS-BRIEFED TO THE INCOMING CTLR HAD SOMETHING TO DO WITH IT. THERE DID SEEM TO BE SOME DOUBT IN HER VOICE.

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.