 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
During ZID sector relief briefing, malfunctioning headset of relieving controller causes distractions that contribute to an operational error between an en route FA20 and E145.
| Attributes | |
| ACN | 541141 |
| Time | |
| Date | 200203 |
| Day | Fri |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | navaid : hvq.vor |
| State Reference | SC |
| Altitude | msl bound lower : 35000 msl bound upper : 37000 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zid.artcc tower : rdd.tower |
| Operator | general aviation : corporate |
| Make Model Name | Falcon 50 |
| Operating Under FAR Part | Part 91 |
| Navigation In Use | other vortac |
| Flight Phase | cruise : enroute altitude change |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zid.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | EMB ERJ 145 ER&LR |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other vortac |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar pilot : instrument |
| Experience | controller military : 9 controller radar : 8 controller supervisory : 2 controller time certified in position1 : 0.66 flight time total : 500 |
| ASRS Report | 541141 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : published procedure non adherence : required legal separation other anomaly other |
| Independent Detector | atc equipment : conflict alert other controllera other controllerb other other : 5 |
| Resolutory Action | none taken : insufficient time |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 24000 vertical : 1200 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Intra Facility Coordination Failure Operational Error |
Narrative:
While working RA position, radar controller had 2 aircraft at FL330 in confliction. He issued a heading to aircraft #1 to maintain separation. Aircraft #1 asked for FL370 and it was issued. I went off line to deconflict other inbound aircraft, at which time radar controller issued a clearance on course leaving FL350 to aircraft #1. I did not hear this clearance and was unaware of it until almost simultaneously 3 people inquired about separation supervisor, another sector controller and a relieving controller. Aircraft #1 turned into aircraft #2. Conflict alert did not go off in a timely manner. Conflict alert went off as, or almost after, evasive headings were issued. After the loss of separation, the radar controller stated he thought aircraft #2 was at FL310, but the aircraft was at FL350. Just before the incident, the radar controller was trying to give a position relief briefing, but the relieving controller had a problem with his headset which misdirected our visual attention to help resolve the headset problem.
Original NASA ASRS Text
Title: DURING ZID SECTOR RELIEF BRIEFING, MALFUNCTIONING HEADSET OF RELIEVING CTLR CAUSES DISTRACTIONS THAT CONTRIBUTE TO AN OPERROR BTWN AN ENRTE FA20 AND E145.
Narrative: WHILE WORKING RA POS, RADAR CTLR HAD 2 ACFT AT FL330 IN CONFLICTION. HE ISSUED A HEADING TO ACFT #1 TO MAINTAIN SEPARATION. ACFT #1 ASKED FOR FL370 AND IT WAS ISSUED. I WENT OFF LINE TO DECONFLICT OTHER INBOUND ACFT, AT WHICH TIME RADAR CTLR ISSUED A CLRNC ON COURSE LEAVING FL350 TO ACFT #1. I DID NOT HEAR THIS CLRNC AND WAS UNAWARE OF IT UNTIL ALMOST SIMULTANEOUSLY 3 PEOPLE INQUIRED ABOUT SEPARATION SUPVR, ANOTHER SECTOR CTLR AND A RELIEVING CTLR. ACFT #1 TURNED INTO ACFT #2. CONFLICT ALERT DID NOT GO OFF IN A TIMELY MANNER. CONFLICT ALERT WENT OFF AS, OR ALMOST AFTER, EVASIVE HEADINGS WERE ISSUED. AFTER THE LOSS OF SEPARATION, THE RADAR CTLR STATED HE THOUGHT ACFT #2 WAS AT FL310, BUT THE ACFT WAS AT FL350. JUST BEFORE THE INCIDENT, THE RADAR CTLR WAS TRYING TO GIVE A POS RELIEF BRIEFING, BUT THE RELIEVING CTLR HAD A PROB WITH HIS HEADSET WHICH MISDIRECTED OUR VISUAL ATTN TO HELP RESOLVE THE HEADSET PROB.
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.