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A northbound climbing B737 was being vectored around a holding B737. When requested expedite climb control instruction was not perceived to separate from holding traffic, both aircraft were issued vectors. Actions were insufficient to maintain separation.
| Attributes | |
| ACN | 394027 |
| Time | |
| Date | 199802 |
| Day | Wed |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : rdu |
| State Reference | NC |
| Altitude | msl bound lower : 31000 msl bound upper : 31000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdc |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent other other |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller radar : 18 |
| ASRS Report | 394027 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : flight data |
| Qualification | controller : radar |
| Experience | controller radar : 11 |
| ASRS Report | 394260 |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation non adherence : published procedure other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance other |
| Consequence | Other |
| Miss Distance | horizontal : 19200 vertical : 1300 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Air carrier X was sbound at FL310, holding south of the lvl VORTAC and was about to be vectored to fak VORTAC to continue holding. Air carrier Y was northbound direct pxt climb to FL350. Air carrier Y was asked to expedite climb for traffic. Then air carrier X was issued descent to FL290. Air carrier X slightly delayed his descent and air carrier Y was issued a turn to 090 degrees. The aircraft missed by at least 3 mi and 1300 ft. This incident is a result of massive holding for lga and ewr inbounds. Once again the ATC system was overloaded.
Original NASA ASRS Text
Title: A NBOUND CLBING B737 WAS BEING VECTORED AROUND A HOLDING B737. WHEN REQUESTED EXPEDITE CLB CTL INSTRUCTION WAS NOT PERCEIVED TO SEPARATE FROM HOLDING TFC, BOTH ACFT WERE ISSUED VECTORS. ACTIONS WERE INSUFFICIENT TO MAINTAIN SEPARATION.
Narrative: ACR X WAS SBOUND AT FL310, HOLDING S OF THE LVL VORTAC AND WAS ABOUT TO BE VECTORED TO FAK VORTAC TO CONTINUE HOLDING. ACR Y WAS NBOUND DIRECT PXT CLB TO FL350. ACR Y WAS ASKED TO EXPEDITE CLB FOR TFC. THEN ACR X WAS ISSUED DSCNT TO FL290. ACR X SLIGHTLY DELAYED HIS DSCNT AND ACR Y WAS ISSUED A TURN TO 090 DEGS. THE ACFT MISSED BY AT LEAST 3 MI AND 1300 FT. THIS INCIDENT IS A RESULT OF MASSIVE HOLDING FOR LGA AND EWR INBOUNDS. ONCE AGAIN THE ATC SYS WAS OVERLOADED.
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.