 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
A B767ER flight loses communication with controller while in boundary of london control on a planned extended overwater operation after receiving altitude assignment from eggx, first officer.
| Attributes | |
| ACN | 540430 |
| Time | |
| Date | 200203 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : egtt.artcc |
| State Reference | FO |
| Altitude | msl single value : 34000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : egtt.artcc artcc : eggx.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B767-300 and 300 ER |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | cruise : level |
| Route In Use | enroute : atlantic |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : relief pilot |
| Qualification | pilot : atp pilot : cfi pilot : flight engineer pilot : multi engine |
| Experience | flight time last 90 days : 133 flight time total : 9000 flight time type : 965 |
| ASRS Report | 540430 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 17000 flight time type : 500 |
| ASRS Report | 540137 |
| Events | |
| Anomaly | non adherence : clearance non adherence : company policies non adherence : published procedure other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued alert other |
| Consequence | faa : investigated faa : reviewed incident with flight crew other |
| Supplementary | |
| Problem Areas | ATC Human Performance Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Upon receiving final altitude from ATC to expect for oceanic crossing and then leveling off at FL340, I asked captain if I could leave the flight deck for my assigned break. Captain said he would go to lavatory first, and did so. I assumed his position and he left the cabin for a few mins. Primary radio was on cockpit speaker. He returned and I left the cockpit and remained in the cabin for about 2 hours. Upon returning to allow captain his scheduled break, I was told of a loss of communications with ATC while over the united kingdom and that intercept aircraft were sent toward us. It is possible a radio handoff was missed, but why we were not called on last known frequency is unclr. Supplemental information from acn 540137: lost communication with london control. Got ACARS message to contact london 129.72. Contacted london and told we were being intercepted. Asked if all was well. We said yes. Fighter intercept was called off. Flight continued. Did not see other aircraft. Lost communication 10-18 mins.
Original NASA ASRS Text
Title: A B767ER FLT LOSES COM WITH CTLR WHILE IN BOUNDARY OF LONDON CTL ON A PLANNED EXTENDED OVERWATER OP AFTER RECEIVING ALT ASSIGNMENT FROM EGGX, FO.
Narrative: UPON RECEIVING FINAL ALT FROM ATC TO EXPECT FOR OCEANIC XING AND THEN LEVELING OFF AT FL340, I ASKED CAPT IF I COULD LEAVE THE FLT DECK FOR MY ASSIGNED BREAK. CAPT SAID HE WOULD GO TO LAVATORY FIRST, AND DID SO. I ASSUMED HIS POS AND HE LEFT THE CABIN FOR A FEW MINS. PRIMARY RADIO WAS ON COCKPIT SPEAKER. HE RETURNED AND I LEFT THE COCKPIT AND REMAINED IN THE CABIN FOR ABOUT 2 HRS. UPON RETURNING TO ALLOW CAPT HIS SCHEDULED BREAK, I WAS TOLD OF A LOSS OF COMS WITH ATC WHILE OVER THE UNITED KINGDOM AND THAT INTERCEPT ACFT WERE SENT TOWARD US. IT IS POSSIBLE A RADIO HDOF WAS MISSED, BUT WHY WE WERE NOT CALLED ON LAST KNOWN FREQ IS UNCLR. SUPPLEMENTAL INFO FROM ACN 540137: LOST COM WITH LONDON CTL. GOT ACARS MESSAGE TO CONTACT LONDON 129.72. CONTACTED LONDON AND TOLD WE WERE BEING INTERCEPTED. ASKED IF ALL WAS WELL. WE SAID YES. FIGHTER INTERCEPT WAS CALLED OFF. FLT CONTINUED. DID NOT SEE OTHER ACFT. LOST COM 10-18 MINS.
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.