 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Near midair collision occurs as part 135 cargo aircraft experiences an altitude deviation, climbing through occupied altitude of departing passenger 757. Aircraft on separate frequencys, no party line communication. TA given. TCASII solved problem in instituting the evasive action descent.
| Attributes | |
| ACN | 339115 |
| Time | |
| Date | 199606 |
| Day | Thu |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : dxo airport : dtw |
| State Reference | MI |
| Altitude | msl bound lower : 11000 msl bound upper : 13000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zob |
| Operator | common carrier : air carrier |
| Make Model Name | B757-200 |
| Navigation In Use | Other Other |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | departure other departure sid : sid enroute airway : zob |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Sabreliner 265 |
| Flight Phase | climbout : intermediate altitude cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : instrument pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 13000 flight time type : 200 |
| ASRS Report | 339115 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : cfi pilot : instrument pilot : flight engineer pilot : commercial pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 10000 flight time type : 58 |
| ASRS Report | 341225 |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude non adherence : clearance non adherence : far |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other controllera other flight crewa |
| Resolutory Action | flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 0 vertical : 200 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Scheduled service dtw-lax on departure toward stl. Mid climb, altitude 13000 ft. Center called traffic 2 O'clock, 10 mi, 10000 ft. I called traffic in sight. Center advised traffic would pass underneath us. Traffic, a cargo 301 sabreliner/falcon jet, began high performance climbing left turn toward my aircraft. As traffic approached my altitude my TCASII traffic alerted 'traffic.' as traffic climbed through my altitude I initiated an evasive descent while TCASII switched to RA 'monitor vertical speed, descend' then, 'increase descent.' traffic passed 200 ft above and our flight paths crossed. After clear of traffic I queried ZOB about traffic, they claimed traffic was cleared underneath us and that we should climb. I told them traffic had passed above us, and that we had received TCASII RA's instructing descent. ZOB immediately switched us to ZAU before I could discuss it further. Problem: near miss. Cause: air cargo 301 turning into us. Solution: aircraft should be on same frequency when that close. Did not appear cargo aircraft was on the same frequency. Aircraft Y should not have flown into my flight path.
Original NASA ASRS Text
Title: NMAC OCCURS AS PART 135 CARGO ACFT EXPERIENCES AN ALTDEV, CLBING THROUGH OCCUPIED ALT OF DEPARTING PAX 757. ACFT ON SEPARATE FREQS, NO PARTY LINE COM. TA GIVEN. TCASII SOLVED PROB IN INSTITUTING THE EVASIVE ACTION DSCNT.
Narrative: SCHEDULED SVC DTW-LAX ON DEP TOWARD STL. MID CLB, ALT 13000 FT. CTR CALLED TFC 2 O'CLOCK, 10 MI, 10000 FT. I CALLED TFC IN SIGHT. CTR ADVISED TFC WOULD PASS UNDERNEATH US. TFC, A CARGO 301 SABRELINER/FALCON JET, BEGAN HIGH PERFORMANCE CLBING L TURN TOWARD MY ACFT. AS TFC APCHED MY ALT MY TCASII TFC ALERTED 'TFC.' AS TFC CLBED THROUGH MY ALT I INITIATED AN EVASIVE DSCNT WHILE TCASII SWITCHED TO RA 'MONITOR VERT SPD, DSND' THEN, 'INCREASE DSCNT.' TFC PASSED 200 FT ABOVE AND OUR FLT PATHS CROSSED. AFTER CLR OF TFC I QUERIED ZOB ABOUT TFC, THEY CLAIMED TFC WAS CLRED UNDERNEATH US AND THAT WE SHOULD CLB. I TOLD THEM TFC HAD PASSED ABOVE US, AND THAT WE HAD RECEIVED TCASII RA'S INSTRUCTING DSCNT. ZOB IMMEDIATELY SWITCHED US TO ZAU BEFORE I COULD DISCUSS IT FURTHER. PROB: NEAR MISS. CAUSE: AIR CARGO 301 TURNING INTO US. SOLUTION: ACFT SHOULD BE ON SAME FREQ WHEN THAT CLOSE. DID NOT APPEAR CARGO ACFT WAS ON THE SAME FREQ. ACFT Y SHOULD NOT HAVE FLOWN INTO MY FLT PATH.
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.