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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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Near midair collision. During departure climb, departure controller alerted flight crew of intruder VFR aircraft and provided vector headings. After being turned 'hard left' TCASII commanded climb for traffic. In steep climb for avoidance, airspeed decreased and reporter captain extended flaps for greater stall margin.
| Attributes | |
| ACN | 333418 |
| Time | |
| Date | 199604 |
| Day | Sat |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : ont |
| State Reference | CA |
| Altitude | msl bound lower : 5000 msl bound upper : 6500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| 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 | enroute airway : ont |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | general aviation : personal |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | Part 91 |
| Flight Phase | climbout : intermediate altitude cruise other |
| Flight Plan | None |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : flight engineer pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 10000 flight time type : 4000 |
| ASRS Report | 333418 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : nmac other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other controllera |
| Resolutory Action | controller : issued new clearance none taken : detected after the fact other |
| Consequence | Other |
| Miss Distance | horizontal : 200 vertical : 0 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
Narrative:
Departure alerted us to VFR traffic 2 O'clock (approximately) 6 mi (approximately). Never saw aircraft. Departure 'climb to 6500 ft (??)' 'the traffic is climbing too' 'turn hard left.' at this point TCASII commanded 'climb, climb.' we were in a nose up (25 degree) climb to the left when the first officer spotted the aircraft off the right approximately 200 ft. Our airspeed had decreased from 250 KTS to approximately 180 KTS and I extended flaps 11 degrees. We missed aircraft and continued in flight. It seems in hindsight with a VFR above us on a collision course we should have descended to miss, then climb. A MD80 at 140000 pound will not perform too well in climb.
Original NASA ASRS Text
Title: NMAC. DURING DEP CLB, DEP CTLR ALERTED FLC OF INTRUDER VFR ACFT AND PROVIDED VECTOR HDGS. AFTER BEING TURNED 'HARD L' TCASII COMMANDED CLB FOR TFC. IN STEEP CLB FOR AVOIDANCE, AIRSPD DECREASED AND RPTR CAPT EXTENDED FLAPS FOR GREATER STALL MARGIN.
Narrative: DEP ALERTED US TO VFR TFC 2 O'CLOCK (APPROX) 6 MI (APPROX). NEVER SAW ACFT. DEP 'CLB TO 6500 FT (??)' 'THE TFC IS CLBING TOO' 'TURN HARD L.' AT THIS POINT TCASII COMMANDED 'CLB, CLB.' WE WERE IN A NOSE UP (25 DEG) CLB TO THE L WHEN THE FO SPOTTED THE ACFT OFF THE R APPROX 200 FT. OUR AIRSPD HAD DECREASED FROM 250 KTS TO APPROX 180 KTS AND I EXTENDED FLAPS 11 DEGS. WE MISSED ACFT AND CONTINUED IN FLT. IT SEEMS IN HINDSIGHT WITH A VFR ABOVE US ON A COLLISION COURSE WE SHOULD HAVE DSNDED TO MISS, THEN CLB. A MD80 AT 140000 LB WILL NOT PERFORM TOO WELL IN CLB.
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.