 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Nct controller experienced operational error at FL180 when aircraft failed to acknowledge descent clearance and ZOA issued unexpected clearance.
| Attributes | |
| ACN | 743381 |
| Time | |
| Date | 200706 |
| Place | |
| Locale Reference | navaid : oak.vor |
| State Reference | CA |
| Altitude | msl single value : 18000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : nct.tracon |
| Operator | general aviation : personal |
| Make Model Name | Premier 1 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : nct.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : departure |
| Qualification | controller : radar |
| Experience | controller limited radar : 2 controller military : 4 controller radar : 11 controller time certified in position1 : 11 controller time certified in position2 : 4 |
| ASRS Report | 743381 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Experience | controller limited radar : 5 controller military : 6 controller radar : 14 controller supervisory : 2 |
| ASRS Report | 743948 |
| Events | |
| Anomaly | non adherence : clearance non adherence : required legal separation |
| Independent Detector | other controllera |
| Resolutory Action | none taken : anomaly accepted |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
The controller tried to contact aircraft X 5 times to descend him. Aircraft X did not respond. No radio contributed to incident. When I pointed out the sts arrival to sector 41 they asked us to stop him at FL180 with no reason. Actually they were issuing instructions to separate our traffic in our airspace. We have different procedures and our radar refreshes 3 times faster. They shouldn't do that!
Original NASA ASRS Text
Title: NCT CTLR EXPERIENCED OPERROR AT FL180 WHEN ACFT FAILED TO ACKNOWLEDGE DESCENT CLRNC AND ZOA ISSUED UNEXPECTED CLRNC.
Narrative: THE CTLR TRIED TO CONTACT ACFT X 5 TIMES TO DSND HIM. ACFT X DID NOT RESPOND. NO RADIO CONTRIBUTED TO INCIDENT. WHEN I POINTED OUT THE STS ARR TO SECTOR 41 THEY ASKED US TO STOP HIM AT FL180 WITH NO REASON. ACTUALLY THEY WERE ISSUING INSTRUCTIONS TO SEPARATE OUR TFC IN OUR AIRSPACE. WE HAVE DIFFERENT PROCS AND OUR RADAR REFRESHES 3 TIMES FASTER. THEY SHOULDN'T DO THAT!
Data retrieved from NASA's ASRS site as of January 2009 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.