37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Attributes | |
ACN | 299048 |
Time | |
Date | 199503 |
Day | Fri |
Local Time Of Day | 1801 To 2400 |
Place | |
Locale Reference | atc facility : cdb |
State Reference | AK |
Altitude | msl bound lower : 33000 msl bound upper : 33000 |
Environment | |
Flight Conditions | VMC |
Light | Daylight |
Aircraft 1 | |
Controlling Facilities | artcc : zan tracon : uuz |
Operator | common carrier : air carrier |
Make Model Name | B747 Undifferentiated or Other Model |
Operating Under FAR Part | Part 121 |
Navigation In Use | Other |
Flight Phase | cruise other |
Route In Use | enroute : pacific enroute : other oceanic |
Flight Plan | IFR |
Person 1 | |
Affiliation | company : air carrier |
Function | flight crew : captain oversight : pic |
Qualification | pilot : atp pilot : flight engineer |
Experience | flight time last 90 days : 150 flight time total : 23000 |
ASRS Report | 299048 |
Person 2 | |
Affiliation | company : air carrier |
Function | flight crew : first officer |
Qualification | pilot : commercial pilot : instrument |
Events | |
Anomaly | non adherence : clearance other anomaly other other spatial deviation |
Independent Detector | other flight crewa |
Resolutory Action | none taken : anomaly accepted |
Consequence | faa : reviewed incident with flight crew |
Supplementary | |
Air Traffic Incident | other |
Narrative:
Zan sent message via communication radio HF to 'proceed direct cold bay, direct spy' I started a right turn toward cold bay when clearance was received but immediately turned back left on course when I found cold bay to be a 70 degree right turn. I notified communication radio to send to zan that I could not accept clearance because of safety reasons and was proceeding on course, track 'east.' the clearance was improper in that it did not have anything past spy. Also I had serious doubt that, if I accepted such a clearance, I would have jeopardized my fuel to the destination. The purpose of the report is that zan, after later contact, asked if I had returned to track 'east' without a clearance. My response was I never got off track 'east' so I didn't return without a clearance. The solution would be better radio communication and eliminate communication radio transferring ATC clrncs via a very poor HF communication link.
Original NASA ASRS Text
Title: AMENDED CLRNC RTE CHANGE WITH NO CONTINUING ROUTING.
Narrative: ZAN SENT MESSAGE VIA COM RADIO HF TO 'PROCEED DIRECT COLD BAY, DIRECT SPY' I STARTED A R TURN TOWARD COLD BAY WHEN CLRNC WAS RECEIVED BUT IMMEDIATELY TURNED BACK L ON COURSE WHEN I FOUND COLD BAY TO BE A 70 DEG R TURN. I NOTIFIED COM RADIO TO SEND TO ZAN THAT I COULD NOT ACCEPT CLRNC BECAUSE OF SAFETY REASONS AND WAS PROCEEDING ON COURSE, TRACK 'E.' THE CLRNC WAS IMPROPER IN THAT IT DID NOT HAVE ANYTHING PAST SPY. ALSO I HAD SERIOUS DOUBT THAT, IF I ACCEPTED SUCH A CLRNC, I WOULD HAVE JEOPARDIZED MY FUEL TO THE DEST. THE PURPOSE OF THE RPT IS THAT ZAN, AFTER LATER CONTACT, ASKED IF I HAD RETURNED TO TRACK 'E' WITHOUT A CLRNC. MY RESPONSE WAS I NEVER GOT OFF TRACK 'E' SO I DIDN'T RETURN WITHOUT A CLRNC. THE SOLUTION WOULD BE BETTER RADIO COM AND ELIMINATE COM RADIO TRANSFERRING ATC CLRNCS VIA A VERY POOR HF COM LINK.
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.