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ZDC controller distraction with NORDO situation between air carrier #3 and #4 and loses separation between air carrier #1 and #2.
| Attributes | |
| ACN | 507191 |
| Time | |
| Date | 200104 |
| Day | Fri |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : orf.airport |
| State Reference | VA |
| Altitude | msl single value : 29000 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdc.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zdc.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | DC-9 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller radar : 15 |
| ASRS Report | 507191 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | aircraft equipment problem : less severe conflict : airborne less severe non adherence : required legal separation non adherence : published procedure |
| Independent Detector | atc equipment : conflict alert atc equipment other atc equipment : radar other controllera |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 14400 vertical : 300 |
| Supplementary | |
| Problem Areas | ATC Human Performance Aircraft |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Air carrier X northbound going direct swl destination phl, level at FL240. Air carrier Y sbound at FL280 requesting FL310 going direct iso was climbed to FL310. Was distraction by air carrier Z climbing to FL290 through the altitude of air carrier west level at FL270. Air carrier 2 was a NORDO an the time and faster than air carrier west. Was trying to establish communications with air carrier Z when loss of separation occurred with air carrier X and air carrier Y.
Original NASA ASRS Text
Title: ZDC CTLR DISTR WITH NORDO SIT BTWN ACR #3 AND #4 AND LOSES SEPARATION BTWN ACR #1 AND #2.
Narrative: ACR X NBOUND GOING DIRECT SWL DEST PHL, LEVEL AT FL240. ACR Y SBOUND AT FL280 REQUESTING FL310 GOING DIRECT ISO WAS CLBED TO FL310. WAS DISTR BY ACR Z CLBING TO FL290 THROUGH THE ALT OF ACR W LEVEL AT FL270. ACR 2 WAS A NORDO AN THE TIME AND FASTER THAN ACR W. WAS TRYING TO ESTABLISH COMS WITH ACR Z WHEN LOSS OF SEPARATION OCCURRED WITH ACR X AND ACR Y.
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.