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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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Less than standard separation between a jet and a turboprop on converging courses to the final. Reporter implies the main reason for the loss of separation was the concentration to fit a C210 in with faster jets and turboprops.
| Attributes | |
| ACN | 363879 |
| Time | |
| Date | 199703 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : fdk |
| State Reference | MD |
| Altitude | msl bound lower : 5000 msl bound upper : 5000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Dusk |
| Aircraft 1 | |
| Make Model Name | Cessna 210 Centurion / Turbo Centurion 210C, 210D |
| Operating Under FAR Part | other : unknown |
| Flight Phase | cruise other cruise other |
| Route In Use | enroute : on vectors enroute airway : bwi |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | other : unknown |
| Flight Phase | cruise other descent : approach |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Experience | controller radar : 15 |
| ASRS Report | 363879 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Events | |
| Anomaly | non adherence : published procedure non adherence : required legal separation |
| Independent Detector | other controllera |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | Other |
| Miss Distance | horizontal : 4200 vertical : 300 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
2 converging flows to final at same altitude. This may be the main reason for the loss of separation -- the concentration it took to try to fit in a slow moving C210 with the faster jets and turboprops. With the limited amount of airspace on the east side, we were having to dodge the C210 and also turn our aircraft to try to hit a gap for the staggered approachs. This caused our concentration to focus within 10 mi from the airport. The procedure of the 2 5000 coming together has been brought up on a few occasions as a problem. Though the solutions were not accepted, why wasn't there a continued effort to correct this problem? Was the adjacent controller's, final west, who was working the jet on north arrival, who fed final west the jet, workload too heavy that they did not see the confliction coming?
Original NASA ASRS Text
Title: LTSS BTWN A JET AND A TURBOPROP ON CONVERGING COURSES TO THE FINAL. RPTR IMPLIES THE MAIN REASON FOR THE LOSS OF SEPARATION WAS THE CONCENTRATION TO FIT A C210 IN WITH FASTER JETS AND TURBOPROPS.
Narrative: 2 CONVERGING FLOWS TO FINAL AT SAME ALT. THIS MAY BE THE MAIN REASON FOR THE LOSS OF SEPARATION -- THE CONCENTRATION IT TOOK TO TRY TO FIT IN A SLOW MOVING C210 WITH THE FASTER JETS AND TURBOPROPS. WITH THE LIMITED AMOUNT OF AIRSPACE ON THE E SIDE, WE WERE HAVING TO DODGE THE C210 AND ALSO TURN OUR ACFT TO TRY TO HIT A GAP FOR THE STAGGERED APCHS. THIS CAUSED OUR CONCENTRATION TO FOCUS WITHIN 10 MI FROM THE ARPT. THE PROC OF THE 2 5000 COMING TOGETHER HAS BEEN BROUGHT UP ON A FEW OCCASIONS AS A PROB. THOUGH THE SOLUTIONS WERE NOT ACCEPTED, WHY WASN'T THERE A CONTINUED EFFORT TO CORRECT THIS PROB? WAS THE ADJACENT CTLR'S, FINAL W, WHO WAS WORKING THE JET ON N ARR, WHO FED FINAL W THE JET, WORKLOAD TOO HVY THAT THEY DID NOT SEE THE CONFLICTION COMING?
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.