37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Attributes | |
ACN | 187128 |
Time | |
Date | 199108 |
Day | Wed |
Local Time Of Day | 1801 To 2400 |
Place | |
Locale Reference | atc facility : trm |
State Reference | CA |
Altitude | msl bound lower : 35000 msl bound upper : 35000 |
Environment | |
Flight Conditions | VMC |
Light | Daylight |
Aircraft 1 | |
Controlling Facilities | artcc : zla |
Operator | common carrier : air carrier |
Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
Flight Phase | cruise other |
Route In Use | enroute : direct |
Flight Plan | IFR |
Person 1 | |
Affiliation | government : faa |
Function | controller : radar |
Qualification | controller : radar |
Experience | controller non radar : 4 controller radar : 6 |
ASRS Report | 187128 |
Person 2 | |
Affiliation | government : faa |
Function | controller : radar |
Qualification | controller : radar |
Events | |
Anomaly | conflict : airborne less severe non adherence : published procedure non adherence : required legal separation |
Independent Detector | atc equipment other atc equipment : unspecified |
Resolutory Action | controller : issued new clearance other |
Consequence | faa : investigated |
Miss Distance | horizontal : 18600 vertical : 300 |
Supplementary | |
Primary Problem | ATC Human Performance |
Air Traffic Incident | Intra Facility Coordination Failure Operational Error |
Narrative:
Air carrier X was wbound at FL350 5 south of my southern airspace boundary. A limited data block was on my radar display. The controller working air carrier X just handed 4 aircraft off to me that were proceeding north and nebound out of his sector into mine. He verbally gave me control of these aircraft. Air carrier Y was one of these aircraft at FL330 requesting FL370 to get above WX that was in the vicinity of pke. I issued the climb, conflict alert went off so I turned air carrier Y due north, the other controller turned air carrier X south. Problems. Miscom, apparently what the other controller said to me and what I heard (when control of the aircraft was given) were 2 different things. The other controller got busy on the west side of his sector with the aircraft I was working on the east side of the sector. I didn't expect another aircraft to be going wbound (air carrier X) when I had control to climb aircraft. I didn't see the limited data block for air carrier X so I was totally surprised when conflict alert went off. 2 more sets of eyes would have spotted the potential conflict much earlier. In my opinion this error would not have happened had these 2 sectors had D controllers. We were both 1 holing our sectors due to short staffing. I feel that if a sector is open it should always be fully staffed. It looks to me like the FAA is sacrificing safety for staffing. The chief made it clear that we cannot fully staff open sectors due to limited personnel. He also put the responsibility on to the controller for lack of staffing by telling me that when I'm 1 holing a sector and need help I should yell for it.
Original NASA ASRS Text
Title: ACR Y HAD LTSS FROM ACR X. SYS ERROR. UNAUTH CLB THROUGH OCCUPIED ALT.
Narrative: ACR X WAS WBOUND AT FL350 5 S OF MY SOUTHERN AIRSPACE BOUNDARY. A LIMITED DATA BLOCK WAS ON MY RADAR DISPLAY. THE CTLR WORKING ACR X JUST HANDED 4 ACFT OFF TO ME THAT WERE PROCEEDING N AND NEBOUND OUT OF HIS SECTOR INTO MINE. HE VERBALLY GAVE ME CTL OF THESE ACFT. ACR Y WAS ONE OF THESE ACFT AT FL330 REQUESTING FL370 TO GET ABOVE WX THAT WAS IN THE VICINITY OF PKE. I ISSUED THE CLB, CONFLICT ALERT WENT OFF SO I TURNED ACR Y DUE N, THE OTHER CTLR TURNED ACR X S. PROBLEMS. MISCOM, APPARENTLY WHAT THE OTHER CTLR SAID TO ME AND WHAT I HEARD (WHEN CTL OF THE ACFT WAS GIVEN) WERE 2 DIFFERENT THINGS. THE OTHER CTLR GOT BUSY ON THE W SIDE OF HIS SECTOR WITH THE ACFT I WAS WORKING ON THE E SIDE OF THE SECTOR. I DIDN'T EXPECT ANOTHER ACFT TO BE GOING WBOUND (ACR X) WHEN I HAD CTL TO CLB ACFT. I DIDN'T SEE THE LIMITED DATA BLOCK FOR ACR X SO I WAS TOTALLY SURPRISED WHEN CONFLICT ALERT WENT OFF. 2 MORE SETS OF EYES WOULD HAVE SPOTTED THE POTENTIAL CONFLICT MUCH EARLIER. IN MY OPINION THIS ERROR WOULD NOT HAVE HAPPENED HAD THESE 2 SECTORS HAD D CTLRS. WE WERE BOTH 1 HOLING OUR SECTORS DUE TO SHORT STAFFING. I FEEL THAT IF A SECTOR IS OPEN IT SHOULD ALWAYS BE FULLY STAFFED. IT LOOKS TO ME LIKE THE FAA IS SACRIFICING SAFETY FOR STAFFING. THE CHIEF MADE IT CLR THAT WE CANNOT FULLY STAFF OPEN SECTORS DUE TO LIMITED PERSONNEL. HE ALSO PUT THE RESPONSIBILITY ON TO THE CTLR FOR LACK OF STAFFING BY TELLING ME THAT WHEN I'M 1 HOLING A SECTOR AND NEED HELP I SHOULD YELL FOR IT.
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.