37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Attributes | |
ACN | 163415 |
Time | |
Date | 199011 |
Day | Wed |
Local Time Of Day | 1201 To 1800 |
Place | |
Locale Reference | atc facility : cae |
State Reference | SC |
Altitude | msl bound lower : 35000 msl bound upper : 36900 |
Environment | |
Flight Conditions | VMC |
Light | Daylight |
Aircraft 1 | |
Controlling Facilities | artcc : zjx |
Operator | common carrier : air carrier |
Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
Flight Phase | climbout : intermediate altitude |
Route In Use | enroute : direct enroute airway : j75 |
Flight Plan | IFR |
Aircraft 2 | |
Operator | common carrier : air carrier |
Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
Flight Phase | cruise other |
Flight Plan | IFR |
Person 1 | |
Affiliation | government : faa |
Function | controller : radar |
Qualification | controller : radar |
Experience | controller radar : 22 |
ASRS Report | 163415 |
Person 2 | |
Affiliation | company : air carrier |
Function | flight crew : captain oversight : pic |
Qualification | pilot : atp |
Events | |
Anomaly | conflict : airborne less severe inflight encounter other non adherence : required legal separation |
Independent Detector | other other : unspecified atc |
Resolutory Action | other |
Consequence | faa : investigated |
Miss Distance | horizontal : 28800 vertical : 1900 |
Supplementary | |
Primary Problem | ATC Human Performance |
Air Traffic Incident | Operational Error |
Narrative:
I was working R65 when air carrier X checked in climbing to FL330. I was also working air carrier Y on J75 at FL350. X requested a higher altitude and I cleared X to climb and maintain FL370. I then turned Y 20 degrees right vectors behind traffic to ensure latitude sep with X climbing. I put the 5 mi circle on X target. When it appeared that Y did not take a full 20 degree turn, I then issued an additional 20 degree right turn. Still didn't appear to be turning at a standard rate, so I questioned his turning to the right, as it appeared to either be no turn or a slight turn to the left. X reported out of FL370 and I reclred X direct chs and Y direct gnv. Somewhere in this time frame R65, that I was working, was closed by the area supervisor west/O my knowledge or consent, and the flight progress strips were taken to R66. At no time did I observe a loss of sep between X and Y. Callback conversation with reporter revealed the following: reporter says facility did process as operational error. Closest point was 4.9 mi with 1900' vertical sep. Air carrier Y was swbnd on J75. Air carrier X was off atl via cae and chs. Says strong northwest winds aloft were affecting track of Y and ground speed of X. It was good clear day and air carrier Y was looking at X and knew there was no real danger of conflict as X was passing well in front of Y. Both aircraft were hearing reporter ok.
Original NASA ASRS Text
Title: LESS THAN STANDARD SEPARATION BETWEEN 2 ACR ACFT.
Narrative: I WAS WORKING R65 WHEN ACR X CHKED IN CLBING TO FL330. I WAS ALSO WORKING ACR Y ON J75 AT FL350. X REQUESTED A HIGHER ALT AND I CLRED X TO CLB AND MAINTAIN FL370. I THEN TURNED Y 20 DEGS RIGHT VECTORS BEHIND TFC TO ENSURE LAT SEP WITH X CLBING. I PUT THE 5 MI CIRCLE ON X TARGET. WHEN IT APPEARED THAT Y DID NOT TAKE A FULL 20 DEG TURN, I THEN ISSUED AN ADDITIONAL 20 DEG RIGHT TURN. STILL DIDN'T APPEAR TO BE TURNING AT A STANDARD RATE, SO I QUESTIONED HIS TURNING TO THE RIGHT, AS IT APPEARED TO EITHER BE NO TURN OR A SLIGHT TURN TO THE LEFT. X RPTED OUT OF FL370 AND I RECLRED X DIRECT CHS AND Y DIRECT GNV. SOMEWHERE IN THIS TIME FRAME R65, THAT I WAS WORKING, WAS CLOSED BY THE AREA SUPVR W/O MY KNOWLEDGE OR CONSENT, AND THE FLT PROGRESS STRIPS WERE TAKEN TO R66. AT NO TIME DID I OBSERVE A LOSS OF SEP BTWN X AND Y. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING: RPTR SAYS FAC DID PROCESS AS OPERROR. CLOSEST POINT WAS 4.9 MI WITH 1900' VERT SEP. ACR Y WAS SWBND ON J75. ACR X WAS OFF ATL VIA CAE AND CHS. SAYS STRONG NW WINDS ALOFT WERE AFFECTING TRACK OF Y AND GND SPD OF X. IT WAS GOOD CLR DAY AND ACR Y WAS LOOKING AT X AND KNEW THERE WAS NO REAL DANGER OF CONFLICT AS X WAS PASSING WELL IN FRONT OF Y. BOTH ACFT WERE HEARING RPTR OK.
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.