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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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An air carrier B737 in descent to 11000 ft on the oxi arrival received a TCASII TA RA on a C414 climbing. Captain reacted by pulling the B737 up rapidly to miss the C414 and 2 flight attendants received minor injuries. The ARTCC radar controller apologized and stated he was in the midst of a handoff and was unable to call the TA.
| Attributes | |
| ACN | 370613 |
| Time | |
| Date | 199706 |
| Day | Sun |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : oxi |
| State Reference | IN |
| Altitude | msl bound lower : 11000 msl bound upper : 11700 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zau |
| Operator | common carrier : air carrier |
| Make Model Name | B737-300 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | descent other |
| Route In Use | arrival other enroute airway : zau |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Cessna 402/402C/B379 Businessliner/Utiliner |
| Operating Under FAR Part | other : unknown |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 210 flight time total : 5800 flight time type : 700 |
| ASRS Report | 370613 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 12000 |
| ASRS Report | 370693 |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : published procedure non adherence : required legal separation 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 : 750 vertical : 200 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Air carrier X (B737-300) phl to ord on arrival (the knox 3) descending to 11000 ft, when passing through 12000 ft we got a TA at 11300 ft and climbing. We started a leveloff at 11700 ft at which time we received an RA, climb. We assumed control of aircraft from autoplt and abruptly pulled up to avoid traffic. We were IMC, however, did get close enough to see the twin cessna. Estimate on separation to be 200 ft vertical and less than 1/8 mi horizontally. Close enough to lettering and paint/color scheme. After takeoff passed we asked the ZAU controller about the traffic. His reply was he was on a handoff line and did not realize the climb rate of the cessna and apologized for the conflict. Thank god for the TCASII. Supplemental information from acn 370693: we then saw the cessna 414 a few hundred ft away, just below us. Captain pulled back on yoke abruptly to avoid hitting the cessna. 2 flight attendants were injured.
Original NASA ASRS Text
Title: AN ACR B737 IN DSCNT TO 11000 FT ON THE OXI ARR RECEIVED A TCASII TA RA ON A C414 CLBING. CAPT REACTED BY PULLING THE B737 UP RAPIDLY TO MISS THE C414 AND 2 FLT ATTENDANTS RECEIVED MINOR INJURIES. THE ARTCC RADAR CTLR APOLOGIZED AND STATED HE WAS IN THE MIDST OF A HDOF AND WAS UNABLE TO CALL THE TA.
Narrative: ACR X (B737-300) PHL TO ORD ON ARR (THE KNOX 3) DSNDING TO 11000 FT, WHEN PASSING THROUGH 12000 FT WE GOT A TA AT 11300 FT AND CLBING. WE STARTED A LEVELOFF AT 11700 FT AT WHICH TIME WE RECEIVED AN RA, CLB. WE ASSUMED CTL OF ACFT FROM AUTOPLT AND ABRUPTLY PULLED UP TO AVOID TFC. WE WERE IMC, HOWEVER, DID GET CLOSE ENOUGH TO SEE THE TWIN CESSNA. ESTIMATE ON SEPARATION TO BE 200 FT VERT AND LESS THAN 1/8 MI HORIZLY. CLOSE ENOUGH TO LETTERING AND PAINT/COLOR SCHEME. AFTER TKOF PASSED WE ASKED THE ZAU CTLR ABOUT THE TFC. HIS REPLY WAS HE WAS ON A HDOF LINE AND DID NOT REALIZE THE CLB RATE OF THE CESSNA AND APOLOGIZED FOR THE CONFLICT. THANK GOD FOR THE TCASII. SUPPLEMENTAL INFO FROM ACN 370693: WE THEN SAW THE CESSNA 414 A FEW HUNDRED FT AWAY, JUST BELOW US. CAPT PULLED BACK ON YOKE ABRUPTLY TO AVOID HITTING THE CESSNA. 2 FLT ATTENDANTS WERE INJURED.
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.