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Near midair collision occurs when an mdt flight crew fails to adhere to the visual separation clearance issued by controller for their climb. The other aircraft, a holding DC9, had unexpectedly reversed course in their holding pattern.
| Attributes | |
| ACN | 391048 |
| Time | |
| Date | 199801 |
| Day | Tue |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : crg airport : jax |
| State Reference | FL |
| Altitude | msl bound lower : 9000 msl bound upper : 10500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Dawn |
| Aircraft 1 | |
| Controlling Facilities | tracon : jax |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | approach : visual departure other enroute airway : jax |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | DC-9 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise other other |
| Route In Use | enroute other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 230 flight time total : 5000 flight time type : 1400 |
| ASRS Report | 391048 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : nmac non adherence : clearance non adherence : far other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 300 vertical : 500 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Climb out of jax, told to maintain visual separation with DC9 holding over craig VOR at 10000 ft and continue climb. The DC9 was in a holding pattern and crossed our flight path as we climbed. He was wbound, we were sbound. The DC9 turned back to the VOR and we continued our climb having him in sight. The TCASII RA went off as we crossed in front of the DC9 again. We took evasive action by climbing rapidly and turning approximately 30 degrees.
Original NASA ASRS Text
Title: NMAC OCCURS WHEN AN MDT FLC FAILS TO ADHERE TO THE VISUAL SEPARATION CLRNC ISSUED BY CTLR FOR THEIR CLB. THE OTHER ACFT, A HOLDING DC9, HAD UNEXPECTEDLY REVERSED COURSE IN THEIR HOLDING PATTERN.
Narrative: CLBOUT OF JAX, TOLD TO MAINTAIN VISUAL SEPARATION WITH DC9 HOLDING OVER CRAIG VOR AT 10000 FT AND CONTINUE CLB. THE DC9 WAS IN A HOLDING PATTERN AND CROSSED OUR FLT PATH AS WE CLBED. HE WAS WBOUND, WE WERE SBOUND. THE DC9 TURNED BACK TO THE VOR AND WE CONTINUED OUR CLB HAVING HIM IN SIGHT. THE TCASII RA WENT OFF AS WE CROSSED IN FRONT OF THE DC9 AGAIN. WE TOOK EVASIVE ACTION BY CLBING RAPIDLY AND TURNING APPROX 30 DEGS.
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.