A B777 in international airspace missed several radio calls from scottish control.

Attributes
ACN	704097
Time
Date	200607
Local Time Of Day	0601 To 1200
Place
Locale Reference	intersection : sunot
State Reference	FO
Altitude	msl single value : 37000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : egpx.artcc tower : jfk.tower
Operator	common carrier : air carrier
Make Model Name	B777 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
ASRS Report	704097
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Events
Anomaly	non adherence : far other anomaly other
Independent Detector	other controllera
Resolutory Action	other
Consequence	faa : reviewed incident with flight crew
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

Just prior to reaching our second fix on track a; we were contacted by an air carrier Y aircraft to contact scottish center. We did and were told that had been try to get a hold of us for some time. We never heard them. They asked for an explanation and having not heard them; I am afraid; did have a good explanation. There were multiple similar call signs also in the area. We were at crossing altitude and speed with our clearance. We were then told to contact shanwick where we got out HF frequencys and continued. No traffic or altitude issues were noted. I did make the mistake of not having the volume on the second radio with 121.5 turned up loud enough. So when they tried to reach us there; we could not hear them. There were several calls from the back of the airplane and perhaps with all this we missed 2 calls.

Original NASA ASRS Text

Title: A B777 IN INTL AIRSPACE MISSED SEVERAL RADIO CALLS FROM SCOTTISH CTL.

Narrative: JUST PRIOR TO REACHING OUR SECOND FIX ON TRACK A; WE WERE CONTACTED BY AN ACR Y ACFT TO CONTACT SCOTTISH CTR. WE DID AND WERE TOLD THAT HAD BEEN TRY TO GET A HOLD OF US FOR SOME TIME. WE NEVER HEARD THEM. THEY ASKED FOR AN EXPLANATION AND HAVING NOT HEARD THEM; I AM AFRAID; DID HAVE A GOOD EXPLANATION. THERE WERE MULTIPLE SIMILAR CALL SIGNS ALSO IN THE AREA. WE WERE AT XING ALT AND SPD WITH OUR CLRNC. WE WERE THEN TOLD TO CONTACT SHANWICK WHERE WE GOT OUT HF FREQS AND CONTINUED. NO TFC OR ALT ISSUES WERE NOTED. I DID MAKE THE MISTAKE OF NOT HAVING THE VOLUME ON THE SECOND RADIO WITH 121.5 TURNED UP LOUD ENOUGH. SO WHEN THEY TRIED TO REACH US THERE; WE COULD NOT HEAR THEM. THERE WERE SEVERAL CALLS FROM THE BACK OF THE AIRPLANE AND PERHAPS WITH ALL THIS WE MISSED 2 CALLS.

Data retrieved from NASA's ASRS site as of January 2009 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.