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Aircraft flying over atlantic oceanic rtes is unable to communicate on HF frequencys. Other aircraft in the same area have same difficulty.
| Attributes | |
| ACN | 300411 |
| Time | |
| Date | 199503 |
| Day | Wed |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : ewr |
| State Reference | NJ |
| Altitude | msl bound lower : 28000 msl bound upper : 28000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zny |
| Operator | common carrier : air carrier |
| Make Model Name | B727 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise other |
| Route In Use | enroute : other oceanic enroute : atlantic |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise other |
| Route In Use | enroute : other oceanic enroute : atlantic |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : second officer |
| Qualification | pilot : flight engineer pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 277 flight time total : 15429 flight time type : 669 |
| ASRS Report | 300411 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : cfi pilot : atp pilot : flight engineer |
| Experience | flight time last 90 days : 190 flight time total : 14360 flight time type : 8450 |
| ASRS Report | 300407 |
| Events | |
| Anomaly | aircraft equipment problem : less severe other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | none taken : unable |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
| Situations | |
| ATC Facility | procedure or policy : unspecified |
Narrative:
Xx flight departed sdq at AA00Z. The same aircraft and crew had previously arrived from ewr as flight dd. Ee's destination was ewr. A SELCAL check was satisfactorily performed for both flts. As so, I monitored 121.5 VHF on the secondary radio. As ee progressed, we experienced increasing difficulty in transmitting on HF to the extent that the captain and first officer were not able to make position reports via HF. We received 2 or 3 SELCAL pages and attempted to respond. Contact was made with an air carrier airlines flight ff on VHF and a relay was attempted but they could not raise arinc either. Radio communication was finally established with ZNY on VHF but by that time we missed some reporting points. We arrived in ewr and made appropriate logbook entries for the HF radio difficulties we had experienced. The apparent cause of our difficulty would seem to be poor atmospheric conditions or an equipment malfunction.
Original NASA ASRS Text
Title: ACFT FLYING OVER ATLANTIC OCEANIC RTES IS UNABLE TO COMMUNICATE ON HF FREQS. OTHER ACFT IN THE SAME AREA HAVE SAME DIFFICULTY.
Narrative: XX FLT DEPARTED SDQ AT AA00Z. THE SAME ACFT AND CREW HAD PREVIOUSLY ARRIVED FROM EWR AS FLT DD. EE'S DEST WAS EWR. A SELCAL CHK WAS SATISFACTORILY PERFORMED FOR BOTH FLTS. AS SO, I MONITORED 121.5 VHF ON THE SECONDARY RADIO. AS EE PROGRESSED, WE EXPERIENCED INCREASING DIFFICULTY IN XMITTING ON HF TO THE EXTENT THAT THE CAPT AND FO WERE NOT ABLE TO MAKE POS RPTS VIA HF. WE RECEIVED 2 OR 3 SELCAL PAGES AND ATTEMPTED TO RESPOND. CONTACT WAS MADE WITH AN ACR AIRLINES FLT FF ON VHF AND A RELAY WAS ATTEMPTED BUT THEY COULD NOT RAISE ARINC EITHER. RADIO COM WAS FINALLY ESTABLISHED WITH ZNY ON VHF BUT BY THAT TIME WE MISSED SOME RPTING POINTS. WE ARRIVED IN EWR AND MADE APPROPRIATE LOGBOOK ENTRIES FOR THE HF RADIO DIFFICULTIES WE HAD EXPERIENCED. THE APPARENT CAUSE OF OUR DIFFICULTY WOULD SEEM TO BE POOR ATMOSPHERIC CONDITIONS OR AN EQUIP MALFUNCTION.
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.