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Air carrier widebody transport on oceanic flight loses HF transmit capability, but is able to communicate with ATC via aircraft relay.
| Attributes | |
| ACN | 156658 |
| Time | |
| Date | 199009 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : akl |
| State Reference | FO |
| Altitude | msl bound lower : 33000 msl bound upper : 33000 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zau |
| Operator | common carrier : air carrier |
| Make Model Name | Widebody, Low Wing, 4 Turbojet Eng |
| Flight Phase | cruise other |
| Route In Use | enroute : other oceanic enroute : pacific enroute airway : nfff enroute other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 250 flight time total : 21000 flight time type : 2500 |
| ASRS Report | 156658 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | aircraft equipment problem : less severe other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : overcame equipment problem other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
En route from auckland, nz, to honolulu, hi. Making position report on HF radio to akl radio, everything normal. Out of VHF range on next position report we were unable to transmit on HF, receivers ok we contacted air carrier Y, who was just ahead of us, also going akl-hnl on guard frequency 128.95. He said he would relay our position reports to the controling oceanic radio facs. Which he did throughout the 8 hour flight to nandi and oakland oceanic. We could hear all xmissions to oceanic and received all oceanics xmissions. All position reports were made and were in VHF contact with numerous other during the flight. With this help we elected to continue to hnl instead of returning to akl.
Original NASA ASRS Text
Title: ACR WDB ON OCEANIC FLT LOSES HF TRANSMIT CAPABILITY, BUT IS ABLE TO COMMUNICATE WITH ATC VIA ACFT RELAY.
Narrative: ENRTE FROM AUCKLAND, NZ, TO HONOLULU, HI. MAKING POS RPT ON HF RADIO TO AKL RADIO, EVERYTHING NORMAL. OUT OF VHF RANGE ON NEXT POS RPT WE WERE UNABLE TO XMIT ON HF, RECEIVERS OK WE CONTACTED ACR Y, WHO WAS JUST AHEAD OF US, ALSO GOING AKL-HNL ON GUARD FREQ 128.95. HE SAID HE WOULD RELAY OUR POS RPTS TO THE CTLING OCEANIC RADIO FACS. WHICH HE DID THROUGHOUT THE 8 HR FLT TO NANDI AND OAKLAND OCEANIC. WE COULD HEAR ALL XMISSIONS TO OCEANIC AND RECEIVED ALL OCEANICS XMISSIONS. ALL POS RPTS WERE MADE AND WERE IN VHF CONTACT WITH NUMEROUS OTHER DURING THE FLT. WITH THIS HELP WE ELECTED TO CONTINUE TO HNL INSTEAD OF RETURNING TO AKL.
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.