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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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ARTCC radar controller issues medium large transport air carrier climb clearance from FL280 to FL310 and comes in conflict with B737 at FL290. Both aircraft respond to TCASII RA instructions. B737 pilot climbed 800 ft and other air carrier descended back to FL280.
| Attributes | |
| ACN | 397892 |
| Time | |
| Date | 199803 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : acy |
| State Reference | NJ |
| Altitude | msl bound lower : 28000 msl bound upper : 28400 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdc |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | enroute other |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | B737-400 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | cruise other |
| Route In Use | enroute other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time total : 8000 flight time type : 1200 |
| ASRS Report | 397892 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : required legal separation other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | controller : issued new clearance flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 6000 vertical : 500 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error Pilot Deviation |
Narrative:
At FL280, at vills intersection, controller issued climb to FL310. FL310 was set in window and we both repeated it, pointed at it and the first officer read the clearance to FL310 back to the ZNY controller. At FL284 the TCASII issued an RA to descend. I disconnected the autoplt and began a descent. Traffic was spotted visually and we descended to FL280. We advised the controller we were executing a TCASII descent and he told us to maintain FL280. Supplemental information from acn 398052: near miss, TCASII RA at FL290. Climbed to FL298 via TCASII RA. Other aircraft passed below us between FL290-FL293.
Original NASA ASRS Text
Title: ARTCC RADAR CTLR ISSUES MLG ACR CLB CLRNC FROM FL280 TO FL310 AND COMES IN CONFLICT WITH B737 AT FL290. BOTH ACFT RESPOND TO TCASII RA INSTRUCTIONS. B737 PLT CLBED 800 FT AND OTHER ACR DSNDED BACK TO FL280.
Narrative: AT FL280, AT VILLS INTXN, CTLR ISSUED CLB TO FL310. FL310 WAS SET IN WINDOW AND WE BOTH REPEATED IT, POINTED AT IT AND THE FO READ THE CLRNC TO FL310 BACK TO THE ZNY CTLR. AT FL284 THE TCASII ISSUED AN RA TO DSND. I DISCONNECTED THE AUTOPLT AND BEGAN A DSCNT. TFC WAS SPOTTED VISUALLY AND WE DSNDED TO FL280. WE ADVISED THE CTLR WE WERE EXECUTING A TCASII DSCNT AND HE TOLD US TO MAINTAIN FL280. SUPPLEMENTAL INFO FROM ACN 398052: NEAR MISS, TCASII RA AT FL290. CLBED TO FL298 VIA TCASII RA. OTHER ACFT PASSED BELOW US BTWN FL290-FL293.
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.