A B777 international flight crew received a rerte across the atlantic. Montreal expected the aircraf...

Attributes
ACN	445860
Time
Date	199908
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	navaid : mt.ndb
State Reference	FO
Altitude	msl single value : 36000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : czul.artcc artcc : czqx.artcc
Operator	common carrier : air carrier
Make Model Name	B777 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	cruise : level
Route In Use	enroute : atlantic
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : relief pilot
Qualification	pilot : atp
Experience	flight time last 90 days : 60 flight time total : 14000 flight time type : 60
ASRS Report	445860
Person 2
Affiliation	company : air carrier
Function	flight crew : captain
Qualification	pilot : atp
Events
Anomaly	non adherence : clearance
Independent Detector	other controllera other controllerb other flight crewa other flight crewb
Resolutory Action	controller : issued new clearance
Supplementary
Problem Areas	ATC Human Performance Flight Crew Human Performance Airspace Structure
Primary Problem	ATC Human Performance
Air Traffic Incident	Inter Facility Coordination Failure

Narrative:

Air carrier flight crew 123 ams to iad. Given rerte across atlantic to ydp versus porgy. New release indicated one route versus another. New route inserted in CDU. Clearance given to mt and confirmed mt direct after ydp. Approaching mt, montreal questioned position, expecting aircraft at mofat (20 NM away). Relayed clearance to mt. Montreal says, 'no problem,' but would contact gander. Gander says, 'cleared ydp to mofat.' no further comment. Flight continued uneventfully, no problems. Dispatch notified. The problem is we read back 'mt' but gander did not confirm 'mt,' only read initial clearance which we thought was 'mt.' should have asked for full clearance readback and gander should have given full clearance and problem would have been solved since route #N306C goes only to mofat versus route #N352C to mt. Contributing factors to this problem included the quality of transmission, language differences, quality of reception, hearing, readback, and verification. Clrncs after rertes or any time should include full route disclosure and readback with verification by controller. Rertes, unlike normal flight plans, should include more detail for all involves. All parties should be proactive in obtaining details for new clrncs.

Original NASA ASRS Text

Title: A B777 INTL FLC RECEIVED A RERTE ACROSS THE ATLANTIC. MONTREAL EXPECTED THE ACFT TO BE AT MOFAT, BUT THE CREW HEARD THEY WERE CLRED DIRECT MT. GANDER CLRED THEM TO MOFAT AND NO FURTHER COMMENTS WERE MADE.

Narrative: ACR FLC 123 AMS TO IAD. GIVEN RERTE ACROSS ATLANTIC TO YDP VERSUS PORGY. NEW RELEASE INDICATED ONE RTE VERSUS ANOTHER. NEW RTE INSERTED IN CDU. CLRNC GIVEN TO MT AND CONFIRMED MT DIRECT AFTER YDP. APCHING MT, MONTREAL QUESTIONED POS, EXPECTING ACFT AT MOFAT (20 NM AWAY). RELAYED CLRNC TO MT. MONTREAL SAYS, 'NO PROB,' BUT WOULD CONTACT GANDER. GANDER SAYS, 'CLRED YDP TO MOFAT.' NO FURTHER COMMENT. FLT CONTINUED UNEVENTFULLY, NO PROBS. DISPATCH NOTIFIED. THE PROB IS WE READ BACK 'MT' BUT GANDER DID NOT CONFIRM 'MT,' ONLY READ INITIAL CLRNC WHICH WE THOUGHT WAS 'MT.' SHOULD HAVE ASKED FOR FULL CLRNC READBACK AND GANDER SHOULD HAVE GIVEN FULL CLRNC AND PROB WOULD HAVE BEEN SOLVED SINCE RTE #N306C GOES ONLY TO MOFAT VERSUS RTE #N352C TO MT. CONTRIBUTING FACTORS TO THIS PROB INCLUDED THE QUALITY OF XMISSION, LANGUAGE DIFFERENCES, QUALITY OF RECEPTION, HEARING, READBACK, AND VERIFICATION. CLRNCS AFTER RERTES OR ANY TIME SHOULD INCLUDE FULL RTE DISCLOSURE AND READBACK WITH VERIFICATION BY CTLR. RERTES, UNLIKE NORMAL FLT PLANS, SHOULD INCLUDE MORE DETAIL FOR ALL INVOLVES. ALL PARTIES SHOULD BE PROACTIVE IN OBTAINING DETAILS FOR NEW CLRNCS.

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.

A B777 international flight crew received a rerte across the atlantic. Montreal expected the aircraft to be at mofat, but the crew heard they were cleared direct mt. Gander cleared them to mofat and no further comments were made.