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Medium large transport cleared to descend. Starts descent has TCASII TA then RA. Follow TCASII instructions, ATC says increase rate of descent.
| Attributes | |
| ACN | 206548 |
| Time | |
| Date | 199203 |
| Day | Sat |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : tul |
| State Reference | OK |
| Altitude | msl bound lower : 26000 msl bound upper : 28000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zfw |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 3000 flight time type : 580 |
| ASRS Report | 206548 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : flight engineer |
| Experience | flight time last 90 days : 250 flight time total : 8300 flight time type : 3000 |
| ASRS Report | 206152 |
| Events | |
| Anomaly | non adherence : far non adherence : required legal separation |
| Independent Detector | other controllera other flight crewa |
| Resolutory Action | flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 1000 vertical : 500 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | other |
Narrative:
Cruising at FL280, center gave us a descent to FL260. I established 1000 FPM descent. At approximately FL275 we got a yellow symbol on TCASII at 1 O'clock. Simultaneously, ARTCC asked us to 'increase rate of descent' and turn left 30 degree or 40 degree (exact amount I don't remember), and TCASII commanded 'descend' and 2200 FPM vvi. I kicked off autoplt and complied with ARTCC and TCASII at FL265. Problem resolved and I leveled at FL260 as cleared.
Original NASA ASRS Text
Title: MLG CLRED TO DSND. STARTS DSCNT HAS TCASII TA THEN RA. FOLLOW TCASII INSTRUCTIONS, ATC SAYS INCREASE RATE OF DSCNT.
Narrative: CRUISING AT FL280, CTR GAVE US A DSCNT TO FL260. I ESTABLISHED 1000 FPM DSCNT. AT APPROX FL275 WE GOT A YELLOW SYMBOL ON TCASII AT 1 O'CLOCK. SIMULTANEOUSLY, ARTCC ASKED US TO 'INCREASE RATE OF DSCNT' AND TURN L 30 DEG OR 40 DEG (EXACT AMOUNT I DON'T REMEMBER), AND TCASII COMMANDED 'DSND' AND 2200 FPM VVI. I KICKED OFF AUTOPLT AND COMPLIED WITH ARTCC AND TCASII AT FL265. PROBLEM RESOLVED AND I LEVELED AT FL260 AS CLRED.
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.