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An medium large transport air carrier crew responded to a TCASII command to climb. The intruder aircraft was seen on radar but not visually.
| Attributes | |
| ACN | 210681 |
| Time | |
| Date | 199205 |
| Day | Fri |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | atc facility : pxv |
| State Reference | IN |
| Altitude | msl bound lower : 25000 msl bound upper : 25500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zid tower : bwi |
| Operator | common carrier : air carrier |
| Make Model Name | Light Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | climbout : intermediate altitude cruise other |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Experience | flight time last 90 days : 160 flight time total : 5000 |
| ASRS Report | 210681 |
| 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 : 10000 |
| ASRS Report | 210677 |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other controllera other flight crewa |
| Resolutory Action | flight crew : returned to intended course or assigned course |
| Consequence | Other |
| Miss Distance | horizontal : 20000 vertical : 700 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
We were flying on J29 northeast on the pocket city VOR 048 degree radial 140 DME at FL250. At approximately HH30Z, our TCASII gave a TA at 11 O'clock position, 1300 ft below and climbing. He was converging. Next we got a RA as he was 5-6 mi and closing and was 800 ft below and climbing. We received oral and visual indications from our TCASII to climb. Vsi showed we should climb at 1000 FPM. Captain started a climb, at approximately FL255 climb indications stopped. We leveled off at approximately 25550 ft MSL. We immediately notified center of our climb and asked if he had traffic below us which was climbing. He (ZID) advised that he had traffic below us level at FL240. After traffic passed behind us, we descended back to FL250 and our TCASII showed other traffic to be 700 below our altitude. The traffic indicated on our TCASII got within 3 1/2 to 4 mi and 700- 800 below our altitude at FL250.
Original NASA ASRS Text
Title: AN MLG ACR CREW RESPONDED TO A TCASII COMMAND TO CLB. THE INTRUDER ACFT WAS SEEN ON RADAR BUT NOT VISUALLY.
Narrative: WE WERE FLYING ON J29 NE ON THE POCKET CITY VOR 048 DEG RADIAL 140 DME AT FL250. AT APPROX HH30Z, OUR TCASII GAVE A TA AT 11 O'CLOCK POS, 1300 FT BELOW AND CLBING. HE WAS CONVERGING. NEXT WE GOT A RA AS HE WAS 5-6 MI AND CLOSING AND WAS 800 FT BELOW AND CLBING. WE RECEIVED ORAL AND VISUAL INDICATIONS FROM OUR TCASII TO CLB. VSI SHOWED WE SHOULD CLB AT 1000 FPM. CAPT STARTED A CLB, AT APPROX FL255 CLB INDICATIONS STOPPED. WE LEVELED OFF AT APPROX 25550 FT MSL. WE IMMEDIATELY NOTIFIED CTR OF OUR CLB AND ASKED IF HE HAD TFC BELOW US WHICH WAS CLBING. HE (ZID) ADVISED THAT HE HAD TFC BELOW US LEVEL AT FL240. AFTER TFC PASSED BEHIND US, WE DSNDED BACK TO FL250 AND OUR TCASII SHOWED OTHER TFC TO BE 700 BELOW OUR ALT. THE TFC INDICATED ON OUR TCASII GOT WITHIN 3 1/2 TO 4 MI AND 700- 800 BELOW OUR ALT AT FL250.
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.