 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Flight crew of a DC9 were given a leveloff from climb and a heading change by ATC and noticed a TCASII warning. Later learned that ATC admitted having an operational error and had given the changes to correct a loss of standard separation.
| Attributes | |
| ACN | 364295 |
| Time | |
| Date | 199703 |
| Day | Wed |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : lga |
| State Reference | NY |
| Altitude | msl bound lower : 24500 msl bound upper : 29000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zny tower : ttn |
| Operator | common carrier : air carrier |
| Make Model Name | DC-9 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | other other : other pilot : instrument pilot : atp pilot : cfi pilot : flight engineer |
| Experience | flight time last 90 days : 150 flight time total : 15000 flight time type : 12000 |
| ASRS Report | 364295 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance flight crew : exited adverse environment other |
| Consequence | faa : reviewed incident with flight crew |
| Miss Distance | horizontal : 24000 vertical : 600 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Climbing to FL290 on a vector to intercept 322 degree radial of lga (113.1). Out of FL240, controller requested we level off at our present altitude and turn left to a 260 degree heading. We leveled at FL245 and commenced a turn to 260 degrees. We inquired about the reason for the leveloff and turn, and controller responded that we came too close to an air carrier Y jet. We got a brief TCASII advisory (blue diamond at our 6 O'clock position and it subsequently disappeared after about 5 seconds). Controller stated we appeared 8 mi north of the airway, while both our vors showed us on course. ZNY supervisor said on telephone later that he was writing it up as controller error.
Original NASA ASRS Text
Title: FLC OF A DC9 WERE GIVEN A LEVELOFF FROM CLB AND A HDG CHANGE BY ATC AND NOTICED A TCASII WARNING. LATER LEARNED THAT ATC ADMITTED HAVING AN OPERROR AND HAD GIVEN THE CHANGES TO CORRECT A LOSS OF STANDARD SEPARATION.
Narrative: CLBING TO FL290 ON A VECTOR TO INTERCEPT 322 DEG RADIAL OF LGA (113.1). OUT OF FL240, CTLR REQUESTED WE LEVEL OFF AT OUR PRESENT ALT AND TURN L TO A 260 DEG HDG. WE LEVELED AT FL245 AND COMMENCED A TURN TO 260 DEGS. WE INQUIRED ABOUT THE REASON FOR THE LEVELOFF AND TURN, AND CTLR RESPONDED THAT WE CAME TOO CLOSE TO AN ACR Y JET. WE GOT A BRIEF TCASII ADVISORY (BLUE DIAMOND AT OUR 6 O'CLOCK POS AND IT SUBSEQUENTLY DISAPPEARED AFTER ABOUT 5 SECONDS). CTLR STATED WE APPEARED 8 MI N OF THE AIRWAY, WHILE BOTH OUR VORS SHOWED US ON COURSE. ZNY SUPVR SAID ON TELEPHONE LATER THAT HE WAS WRITING IT UP AS CTLR ERROR.
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.