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B727 crew in cruise at FL280 were given descent to FL260 by ZOB controller. During descent, B727 crew received a TCASII TA RA on traffic at FL270 and spotted a B737 on a converging course.
| Attributes | |
| ACN | 426960 |
| Time | |
| Date | 199901 |
| Day | Wed |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : roc |
| State Reference | NY |
| Altitude | msl bound lower : 27600 msl bound upper : 28000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B727 Undifferentiated or Other Model |
| Flight Phase | descent other |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : cfi pilot : flight engineer |
| Experience | flight time last 90 days : 200 flight time total : 19000 flight time type : 11000 |
| ASRS Report | 426960 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : flight engineer |
| Experience | flight time last 90 days : 40 flight time total : 3200 flight time type : 40 |
| ASRS Report | 426851 |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : published procedure non adherence : required legal separation |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other controllera other flight crewa |
| Resolutory Action | other |
| Consequence | Other |
| Miss Distance | horizontal : 0 vertical : 600 |
| Supplementary | |
| Air Traffic Incident | Operational Error |
Narrative:
We were level at FL280 and ZOB gave us a descent to FL260. We began the descent. I saw a target on the TCASII heading in our direction at FL270 at about 15 NM. I questioned ATC. We were given a 40 degree turn to the right for traffic. We also got a TA which was rapidly followed by an RA. We responded to the RA and informed ATC. We had good visual contact with the B737 (after the RA) and our lowest altitude was about FL276. After we were once again level at FL280, I asked ATC if they had really given us a clearance to FL260. They said 'yes they did!' the TCASII worked as advertised.
Original NASA ASRS Text
Title: B727 CREW IN CRUISE AT FL280 WERE GIVEN DSCNT TO FL260 BY ZOB CTLR. DURING DSCNT, B727 CREW RECEIVED A TCASII TA RA ON TFC AT FL270 AND SPOTTED A B737 ON A CONVERGING COURSE.
Narrative: WE WERE LEVEL AT FL280 AND ZOB GAVE US A DSCNT TO FL260. WE BEGAN THE DSCNT. I SAW A TARGET ON THE TCASII HDG IN OUR DIRECTION AT FL270 AT ABOUT 15 NM. I QUESTIONED ATC. WE WERE GIVEN A 40 DEG TURN TO THE R FOR TFC. WE ALSO GOT A TA WHICH WAS RAPIDLY FOLLOWED BY AN RA. WE RESPONDED TO THE RA AND INFORMED ATC. WE HAD GOOD VISUAL CONTACT WITH THE B737 (AFTER THE RA) AND OUR LOWEST ALT WAS ABOUT FL276. AFTER WE WERE ONCE AGAIN LEVEL AT FL280, I ASKED ATC IF THEY HAD REALLY GIVEN US A CLRNC TO FL260. THEY SAID 'YES THEY DID!' THE TCASII WORKED AS ADVERTISED.
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.