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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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ZDC controller becomes distraction and fails to maintain legal separation standards.
| Attributes | |
| ACN | 470003 |
| Time | |
| Date | 200004 |
| Day | Wed |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | navaid : diw.ndb |
| State Reference | NC |
| Altitude | msl single value : 37000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdc.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B737-400 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zdc.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B757-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller radar : 24 |
| ASRS Report | 470003 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne less severe inflight encounter : weather non adherence : published procedure non adherence : required legal separation |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance |
| Miss Distance | horizontal : 19000 vertical : 1500 |
| Supplementary | |
| Problem Areas | ATC Human Performance Weather |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Air carrier #1 turned to east for in trail separation to phl. Became distraction by dsr equipment, and radio failure at the overlying sector had just inherited the sector. Apparently, winds stronger than anticipated and air carrier #1 ended up closer than required. Conflict alert never activated. Descent issued to air carrier #1 when approximately 5 mi -- reported air carrier #2 in sight.
Original NASA ASRS Text
Title: ZDC CTLR BECOMES DISTR AND FAILS TO MAINTAIN LEGAL SEPARATION STANDARDS.
Narrative: ACR #1 TURNED TO E FOR IN TRAIL SEPARATION TO PHL. BECAME DISTR BY DSR EQUIP, AND RADIO FAILURE AT THE OVERLYING SECTOR HAD JUST INHERITED THE SECTOR. APPARENTLY, WINDS STRONGER THAN ANTICIPATED AND ACR #1 ENDED UP CLOSER THAN REQUIRED. CONFLICT ALERT NEVER ACTIVATED. DSCNT ISSUED TO ACR #1 WHEN APPROX 5 MI -- RPTED ACR #2 IN SIGHT.
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.