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Air carrier X TCASII TA had less than standard separation from small aircraft Y. Evasive action taken. See and avoid. System error.
| Attributes | |
| ACN | 202577 |
| Time | |
| Date | 199202 |
| Day | Sat |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : dca |
| State Reference | DC |
| Altitude | agl bound lower : 300 agl bound upper : 500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : dca |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | climbout : initial |
| Route In Use | approach : visual |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | general aviation : personal |
| Make Model Name | Small Aircraft, Low Wing, 1 Eng, Fixed Gear |
| Flight Phase | cruise other |
| Route In Use | approach : visual |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 140 flight time total : 7000 flight time type : 2500 |
| ASRS Report | 202577 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation non adherence : published procedure non adherence : clearance |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | flight crew : took evasive action |
| Consequence | faa : reviewed incident with flight crew |
| Miss Distance | horizontal : 1500 vertical : 300 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Air carrier X departed dca runway 36 northwest along the potomac river. Between 300 ft and 500 ft, after looking up the river, I turned left to fly up the river. As our aircraft turned we got a TCASII alert in the center of the screen. Not seeing any traffic out the left window, we shifted our attention to the right side. Immediately small aircraft Y appeared at 1 O'clock slightly high at a constant bearing and a closing range. I pulled power off and leveled off to fly below small aircraft Y. The closest point of approach was within 300 ft vertical, 1500 horizontal. Considering the timing of our actions, this all took place between 500 ft (we turned and hadn't done our 800 ft callouts) and 1500 ft (that's the altitude at which we leveled off). After talking to the tower supervisor I feel this incident could have been avoided if small aircraft Y had stayed away from the prescribed departure corridor.
Original NASA ASRS Text
Title: ACR X TCASII TA HAD LTSS FROM SMA Y. EVASIVE ACTION TAKEN. SEE AND AVOID. SYS ERROR.
Narrative: ACR X DEPARTED DCA RWY 36 NW ALONG THE POTOMAC RIVER. BTWN 300 FT AND 500 FT, AFTER LOOKING UP THE RIVER, I TURNED L TO FLY UP THE RIVER. AS OUR ACFT TURNED WE GOT A TCASII ALERT IN THE CTR OF THE SCREEN. NOT SEEING ANY TFC OUT THE L WINDOW, WE SHIFTED OUR ATTN TO THE R SIDE. IMMEDIATELY SMA Y APPEARED AT 1 O'CLOCK SLIGHTLY HIGH AT A CONSTANT BEARING AND A CLOSING RANGE. I PULLED PWR OFF AND LEVELED OFF TO FLY BELOW SMA Y. THE CLOSEST POINT OF APCH WAS WITHIN 300 FT VERT, 1500 HORIZ. CONSIDERING THE TIMING OF OUR ACTIONS, THIS ALL TOOK PLACE BTWN 500 FT (WE TURNED AND HADN'T DONE OUR 800 FT CALLOUTS) AND 1500 FT (THAT'S THE ALT AT WHICH WE LEVELED OFF). AFTER TALKING TO THE TWR SUPVR I FEEL THIS INCIDENT COULD HAVE BEEN AVOIDED IF SMA Y HAD STAYED AWAY FROM THE PRESCRIBED DEP CORRIDOR.
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.