 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Air carrier X TCASII RA had less than standard separation from lear jet. System error. Evasive action descent.
| Attributes | |
| ACN | 306993 |
| Time | |
| Date | 199506 |
| Day | Fri |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : dca |
| State Reference | DC |
| Altitude | msl bound lower : 5700 msl bound upper : 6000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : dca |
| 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 : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Gates Learjet Corp Undifferentiated or Other Model |
| Operating Under FAR Part | other : unknown |
| Flight Phase | descent other |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 17000 flight time type : 9000 |
| ASRS Report | 306993 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 220 flight time total : 6000 flight time type : 2500 |
| ASRS Report | 307903 |
| Events | |
| Anomaly | aircraft equipment problem : less severe conflict : airborne less severe non adherence : published procedure non adherence : required legal separation |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 6000 vertical : 300 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Air carrier X climbing out of dca -- getting vectors from departure control on 125.65. We were given heading 160 degrees and 6000 ft. Center said we were tracking 170-175 degrees and, 'come left to 130 degree heading.' on the 130 degree heading and level at 6000 ft we received a TCASII RA to descend at 1300 FPM. We left 6000 ft and got to 5700 ft before we received a clear of conflict command. Returned to 6000 ft and notified dca departure of our deviation. A lear jet was descending at our 1-2 O'clock position showing about 1 mi separation and 300 ft. Departure stated he was not receiving transponder code and I believe he was talking to the lear.
Original NASA ASRS Text
Title: ACR X TCASII RA HAD LTSS FROM LEAR JET. SYS ERROR. EVASIVE ACTION DSCNT.
Narrative: ACR X CLBING OUT OF DCA -- GETTING VECTORS FROM DEP CTL ON 125.65. WE WERE GIVEN HDG 160 DEGS AND 6000 FT. CTR SAID WE WERE TRACKING 170-175 DEGS AND, 'COME L TO 130 DEG HDG.' ON THE 130 DEG HDG AND LEVEL AT 6000 FT WE RECEIVED A TCASII RA TO DSND AT 1300 FPM. WE LEFT 6000 FT AND GOT TO 5700 FT BEFORE WE RECEIVED A CLR OF CONFLICT COMMAND. RETURNED TO 6000 FT AND NOTIFIED DCA DEP OF OUR DEV. A LEAR JET WAS DSNDING AT OUR 1-2 O'CLOCK POS SHOWING ABOUT 1 MI SEPARATION AND 300 FT. DEP STATED HE WAS NOT RECEIVING XPONDER CODE AND I BELIEVE HE WAS TALKING TO THE LEAR.
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.