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At cruise IMC FL290 to clt in contact with ZID the flight was given a left turn of 20 degrees, after which TCASII TA occurred followed by a TCASII RA to climb which was done until at FL298 aural warning announced clear of traffic. Center was notified and the flight was returned to FL290.
| Attributes | |
| ACN | 332270 |
| Time | |
| Date | 199604 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : hmv |
| State Reference | TN |
| Altitude | msl bound lower : 29000 msl bound upper : 29800 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zid |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | cruise other |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : flight engineer |
| Experience | flight time last 90 days : 150 flight time total : 12000 flight time type : 480 |
| ASRS Report | 332270 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 160 flight time total : 5800 |
| ASRS Report | 332820 |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | flight crew : returned to intended course or assigned course flight crew : took evasive action |
| Consequence | faa : reviewed incident with flight crew |
| Supplementary | |
| Air Traffic Incident | other |
Narrative:
We were in cruise flight at FL290 en route to charlotte, nc, from detroit. I was the PF. We were in contact with ZID frequency 124.57. We were issued a left turn of 20 degrees for traffic. I began a turn as requested. A TA was annunciated by our TCASII unit. I began a visual search. The traffic was indicated at '00' altitude difference and a bearing of approximately 2 O'clock. We were in IMC conditions so a visual acquisition was not possible. I soon thereafter had an RA by the TCASII telling me to climb which I immediately did. I advised my copilot to notify ATC that we were climbing in response to a TCASII RA. I had climbed to approximately FL298 when I received a 'clear of conflict' advisory from the TCASII. I then advised ATC that I was returning to my previously assigned altitude of FL290.
Original NASA ASRS Text
Title: AT CRUISE IMC FL290 TO CLT IN CONTACT WITH ZID THE FLT WAS GIVEN A L TURN OF 20 DEGS, AFTER WHICH TCASII TA OCCURRED FOLLOWED BY A TCASII RA TO CLB WHICH WAS DONE UNTIL AT FL298 AURAL WARNING ANNOUNCED CLR OF TFC. CTR WAS NOTIFIED AND THE FLT WAS RETURNED TO FL290.
Narrative: WE WERE IN CRUISE FLT AT FL290 ENRTE TO CHARLOTTE, NC, FROM DETROIT. I WAS THE PF. WE WERE IN CONTACT WITH ZID FREQ 124.57. WE WERE ISSUED A L TURN OF 20 DEGS FOR TFC. I BEGAN A TURN AS REQUESTED. A TA WAS ANNUNCIATED BY OUR TCASII UNIT. I BEGAN A VISUAL SEARCH. THE TFC WAS INDICATED AT '00' ALT DIFFERENCE AND A BEARING OF APPROX 2 O'CLOCK. WE WERE IN IMC CONDITIONS SO A VISUAL ACQUISITION WAS NOT POSSIBLE. I SOON THEREAFTER HAD AN RA BY THE TCASII TELLING ME TO CLB WHICH I IMMEDIATELY DID. I ADVISED MY COPLT TO NOTIFY ATC THAT WE WERE CLBING IN RESPONSE TO A TCASII RA. I HAD CLBED TO APPROX FL298 WHEN I RECEIVED A 'CLR OF CONFLICT' ADVISORY FROM THE TCASII. I THEN ADVISED ATC THAT I WAS RETURNING TO MY PREVIOUSLY ASSIGNED ALT OF FL290.
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.