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Air carrier-medium large transport and cpr-small transport on converging courses at the same altitude. Less than standard separation.
| Attributes | |
| ACN | 89209 |
| Time | |
| Date | 198806 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : put |
| State Reference | CT |
| Altitude | msl bound lower : 16000 msl bound upper : 16000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zbw tower : pih |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | cruise other |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | general aviation : corporate |
| Make Model Name | Small Transport, Low Wing, 2 Turboprop Eng |
| Flight Phase | cruise other |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| ASRS Report | 89209 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : non radar |
| Qualification | controller : non radar |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation |
| Independent Detector | atc equipment other atc equipment : unspecified other controllera |
| Resolutory Action | controller : issued new clearance none taken : insufficient time other |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 25800 vertical : 0 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Several aircraft were a factor. All aircraft were to fly in same general direction. Aircraft involved: #1 climbing to flight levels, departed providence, proceeding via center wbound. #2: out of hya proceeding to ewr via baf VORTAC at 16000'. Other aircraft jet descending out of flight levels to 17000', landing swf, level at 17000' at time of incident. Several other aircraft wbound over baf out of logan airport landing lga/hpn and ewr. Awareness by controller of pending loss of sep (aircraft converging on 300 degree and 280 degree headings). Unable to climb to above 16000' in time due to 17000' traffic. Turned both aircraft but not before loss of latitude: 4.3 NM. No evasive action required. Human error due to misjudging parallel headings. Better use of flow control on traffic proceeding over baf/center vortacs during certain times of the day. Other cause: controller assigned the manual control position was not working in a team environment. Coordination was not up to PAR. Insure capabilities of all controllers assigned busy sectors. Stress team effort.
Original NASA ASRS Text
Title: ACR-MLG AND CPR-SMT ON CONVERGING COURSES AT THE SAME ALT. LESS THAN STANDARD SEPARATION.
Narrative: SEVERAL ACFT WERE A FACTOR. ALL ACFT WERE TO FLY IN SAME GENERAL DIRECTION. ACFT INVOLVED: #1 CLBING TO FLT LEVELS, DEPARTED PROVIDENCE, PROCEEDING VIA CTR WBOUND. #2: OUT OF HYA PROCEEDING TO EWR VIA BAF VORTAC AT 16000'. OTHER ACFT JET DSNDING OUT OF FLT LEVELS TO 17000', LNDG SWF, LEVEL AT 17000' AT TIME OF INCIDENT. SEVERAL OTHER ACFT WBOUND OVER BAF OUT OF LOGAN ARPT LNDG LGA/HPN AND EWR. AWARENESS BY CTLR OF PENDING LOSS OF SEP (ACFT CONVERGING ON 300 DEG AND 280 DEG HDGS). UNABLE TO CLB TO ABOVE 16000' IN TIME DUE TO 17000' TFC. TURNED BOTH ACFT BUT NOT BEFORE LOSS OF LAT: 4.3 NM. NO EVASIVE ACTION REQUIRED. HUMAN ERROR DUE TO MISJUDGING PARALLEL HDGS. BETTER USE OF FLOW CTL ON TFC PROCEEDING OVER BAF/CTR VORTACS DURING CERTAIN TIMES OF THE DAY. OTHER CAUSE: CTLR ASSIGNED THE MANUAL CTL POS WAS NOT WORKING IN A TEAM ENVIRONMENT. COORD WAS NOT UP TO PAR. INSURE CAPABILITIES OF ALL CTLRS ASSIGNED BUSY SECTORS. STRESS TEAM EFFORT.
Data retrieved from NASA's ASRS site as of August 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.