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Airborne conflict between an mdt on a final visual approach and a traffic watch aircraft transitioning the approach flight path.
| Attributes | |
| ACN | 318113 |
| Time | |
| Date | 199510 |
| Day | Fri |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : dca |
| State Reference | DC |
| Altitude | agl bound lower : 1400 agl bound upper : 2000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Dusk |
| Aircraft 1 | |
| Controlling Facilities | tracon : dca tower : dca tower : bos |
| Operator | common carrier : air carrier |
| Make Model Name | DHC-7 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach |
| Route In Use | approach : visual arrival other |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | general aviation : corporate |
| Make Model Name | Cessna Single Piston Undifferentiated or Other Model |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise other |
| Flight Plan | None |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : local |
| Qualification | controller : non radar |
| Experience | controller non radar : 14 controller radar : 14 |
| ASRS Report | 318113 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne less severe other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : detected after the fact other |
| Consequence | faa : reviewed incident with flight crew |
| Miss Distance | horizontal : 6000 vertical : 300 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Commuter aircraft executing visual approach to dca runway 21 advises on initial contact of a possible near miss with traffic, cessna at 1400 ft doing traffic survey. Traffic cessna was queried about, did he have DHC7 in sight and he advised yes, but it was close. DHC7 was late in contacting tower and no traffic was exchanged until aircraft had passed. Traffic cessna provided his own separation, but with no comfort level for the commuter crew. Unknown if approach control was using altitude restrs on DHC7 aircraft.
Original NASA ASRS Text
Title: AIRBORNE CONFLICT BTWN AN MDT ON A FINAL VISUAL APCH AND A TFC WATCH ACFT TRANSITIONING THE APCH FLT PATH.
Narrative: COMMUTER ACFT EXECUTING VISUAL APCH TO DCA RWY 21 ADVISES ON INITIAL CONTACT OF A POSSIBLE NEAR MISS WITH TFC, CESSNA AT 1400 FT DOING TFC SURVEY. TFC CESSNA WAS QUERIED ABOUT, DID HE HAVE DHC7 IN SIGHT AND HE ADVISED YES, BUT IT WAS CLOSE. DHC7 WAS LATE IN CONTACTING TWR AND NO TFC WAS EXCHANGED UNTIL ACFT HAD PASSED. TFC CESSNA PROVIDED HIS OWN SEPARATION, BUT WITH NO COMFORT LEVEL FOR THE COMMUTER CREW. UNKNOWN IF APCH CTL WAS USING ALT RESTRS ON DHC7 ACFT.
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.