B767 captain reported communication failure in oceanic airspace via HF and cpdlc.

Attributes
ACN	1534675
Time
Date	201804
Local Time Of Day	0001-0600
Place
Locale Reference	ZWY.ARTCC
State Reference	NY
Aircraft 1
Make Model Name	B767 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Cruise
Route In Use	Oceanic Airway L451
Flight Plan	IFR
Component
Aircraft Component	Data Transmission and Automatic Calling
Person 1
Function	Captain Pilot Flying
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Procedural Published Material / Policy

Narrative:

While established on L451 between leton and ilido; approx. 80 nm south of ilido; lost radio communication with new york arinc on both primary; secondary and other HF frequencies. Had tried to log-on cpdlc with zwy multiple times; but each time was rejected. Was able to contact zwy via satcom with position report and they confirmed log-on attempts and showed correct information on their end but indicated there were 'periods' before and after the aircraft tail number (these were not on the log-on screen in the aircraft). Coordinated with zwy on satcom to contact jax center [5 mins] prior to jains. [Another] flight contacted us on 121.5 saying arinc was trying to communicate [to us]. Attempted contact on that frequency and was unsuccessful until 80 nm of jains when contact was finally made [us]. Jax center (ZJX) was contacted shortly after on VHF. No further comm. Issues for remainder of flight.

Original NASA ASRS Text

Title: B767 Captain reported communication failure in oceanic airspace via HF and CPDLC.

Narrative: While established on L451 between LETON and ILIDO; approx. 80 nm South of ILIDO; lost radio communication with New York ARINC on both primary; secondary and other HF frequencies. Had tried to log-on CPDLC with ZWY multiple times; but each time was rejected. Was able to contact ZWY via SATCOM with position report and they confirmed log-on attempts and showed correct information on their end but indicated there were 'periods' before and after the aircraft tail number (these were not on the log-on screen in the aircraft). Coordinated with ZWY on SATCOM to contact JAX center [5 mins] prior to JAINS. [Another] flight contacted us on 121.5 saying ARINC was trying to communicate [to us]. Attempted contact on that frequency and was unsuccessful until 80 nm of JAINS when contact was finally made [us]. JAX Center (ZJX) was contacted shortly after on VHF. No further comm. issues for remainder of flight.

Data retrieved from NASA's ASRS site 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.