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Less than standard separation occurred when ARTCC radar controller failed to hear the pilot's report that he was climbing to FL200.
| Attributes | |
| ACN | 169262 |
| Time | |
| Date | 199101 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : brv |
| State Reference | VA |
| Altitude | msl bound lower : 20000 msl bound upper : 20000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdc tracon : iad |
| Operator | common carrier : air carrier |
| Make Model Name | Small Transport, Low Wing, 2 Turboprop Eng |
| Flight Phase | cruise other |
| Route In Use | enroute airway : zdc |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| ASRS Report | 169262 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : departure |
| Qualification | controller : radar |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : published procedure non adherence : required legal separation |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance none taken : insufficient time other |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 18000 vertical : 0 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Inter Facility Coordination Failure Operational Error |
Narrative:
Turbojet aircraft departed iad with propeller at FL200, approach called on landline and asked if I wanted the turbojet aircraft Y stopped at FL190. I agreed. Aircraft Y came over to me climbing to FL200, I missed the initial call, unknown reasons. (Mod traffic and no landline coordination with adj sector going on). I called traffic to both aircraft, stated traffic's altitudes and that aircraft Y would have higher when clear. Both rogered. No conflict alert; I noticed Y out of FL197 and issued immediate descent. What to do? Better listening on both parties, controller and cockpit. Restate altitude to maintain when issuing traffic.
Original NASA ASRS Text
Title: LESS THAN STANDARD SEPARATION OCCURRED WHEN ARTCC RADAR CTLR FAILED TO HEAR THE PLT'S REPORT THAT HE WAS CLIMBING TO FL200.
Narrative: TURBOJET ACFT DEPARTED IAD WITH PROP AT FL200, APCH CALLED ON LANDLINE AND ASKED IF I WANTED THE TURBOJET ACFT Y STOPPED AT FL190. I AGREED. ACFT Y CAME OVER TO ME CLBING TO FL200, I MISSED THE INITIAL CALL, UNKNOWN REASONS. (MOD TFC AND NO LANDLINE COORD WITH ADJ SECTOR GOING ON). I CALLED TFC TO BOTH ACFT, STATED TFC'S ALTS AND THAT ACFT Y WOULD HAVE HIGHER WHEN CLR. BOTH ROGERED. NO CONFLICT ALERT; I NOTICED Y OUT OF FL197 AND ISSUED IMMEDIATE DSNT. WHAT TO DO? BETTER LISTENING ON BOTH PARTIES, CTLR AND COCKPIT. RESTATE ALT TO MAINTAIN WHEN ISSUING TFC.
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.