A B777 pilot reports that his aircraft's shanwick oceanic satcom phone number is in error.

Attributes
ACN	721117
Time
Date	200612
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : egtt.artcc
State Reference	FO
Altitude	msl single value : 37000
Environment
Flight Conditions	VMC
Aircraft 1
Controlling Facilities	artcc : egtt.artcc
Operator	common carrier : air carrier
Make Model Name	B777-200
Operating Under FAR Part	Part 121
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain observation : company check pilot oversight : pic
Experience	flight time last 90 days : 75 flight time total : 6000 flight time type : 1570
ASRS Report	721117
Events
Anomaly	aircraft equipment problem : less severe
Independent Detector	other flight crewa
Resolutory Action	none taken : anomaly accepted
Supplementary
Problem Areas	Company Aircraft
Primary Problem	Company

Narrative:

The satcom air-to-ground phone number listed on a commercial atlantic orientation chart under the shanwick oceanic frequencys block is 423201. The satcom phone number loaded in ACARS B777's center CDU for shanwick oceanic ('shanwick ATC') is 432201. The second and third digits are reversed from what is published on the commercial chart. 2 test attempts to call shanwick ATC via satcom from B777's on 2 separate flts have been unsuccessful; I believe because the phone number is entered wrong in our satcom preset phone numbers. Since there is no means of entering a satcom number in-flight; this valuable resource is not available to B777 crews in the event of radio failure. To help troubleshoot this problem; the first attempted calls (late november) resulted in messages of 'unassign num;' and these recent tests resulted in messages of 'clear status.'

Original NASA ASRS Text

Title: A B777 PLT RPTS THAT HIS ACFT'S SHANWICK OCEANIC SATCOM PHONE NUMBER IS IN ERROR.

Narrative: THE SATCOM AIR-TO-GND PHONE NUMBER LISTED ON A COMMERCIAL ATLANTIC ORIENTATION CHART UNDER THE SHANWICK OCEANIC FREQS BLOCK IS 423201. THE SATCOM PHONE NUMBER LOADED IN ACARS B777'S CTR CDU FOR SHANWICK OCEANIC ('SHANWICK ATC') IS 432201. THE SECOND AND THIRD DIGITS ARE REVERSED FROM WHAT IS PUBLISHED ON THE COMMERCIAL CHART. 2 TEST ATTEMPTS TO CALL SHANWICK ATC VIA SATCOM FROM B777'S ON 2 SEPARATE FLTS HAVE BEEN UNSUCCESSFUL; I BELIEVE BECAUSE THE PHONE NUMBER IS ENTERED WRONG IN OUR SATCOM PRESET PHONE NUMBERS. SINCE THERE IS NO MEANS OF ENTERING A SATCOM NUMBER INFLT; THIS VALUABLE RESOURCE IS NOT AVAILABLE TO B777 CREWS IN THE EVENT OF RADIO FAILURE. TO HELP TROUBLESHOOT THIS PROB; THE FIRST ATTEMPTED CALLS (LATE NOVEMBER) RESULTED IN MESSAGES OF 'UNASSIGN NUM;' AND THESE RECENT TESTS RESULTED IN MESSAGES OF 'CLR STATUS.'

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.