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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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Reporter situation of reporter's aircraft coming into close proximity to an aztec it was vectored to follow for a visual approach. Reporter implies the vectoring angle was too sharp to follow the aztec which was moving toward the reporter left to right. Near midair collision.
| Attributes | |
| ACN | 363478 |
| Time | |
| Date | 199703 |
| Day | Wed |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : bwi |
| State Reference | MD |
| Altitude | msl bound lower : 3000 msl bound upper : 3000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tracon : bwi tower : bwi |
| Operator | common carrier : air taxi |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | Part 135 |
| Flight Phase | cruise other descent : approach descent other |
| Route In Use | approach : visual |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | PA-23-250 Aztec |
| Operating Under FAR Part | other : unknown |
| Flight Phase | cruise other descent : approach |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air taxi |
| Function | flight crew : single pilot |
| Qualification | pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 100 flight time total : 4200 flight time type : 200 |
| ASRS Report | 363748 |
| Person 2 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : private |
| Events | |
| Anomaly | conflict : nmac |
| Independent Detector | other flight crewa |
| Resolutory Action | controller : issued new clearance flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 400 vertical : 300 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
Narrative:
I was vectored in an arc from the northwest to the southeast of bwi. I had piper aztec traffic at my 11 O'clock position and was directed to maintain 4000 ft. As I reached a point 5-7 NM from the approach end of runway 33 at bwi, I was cleared to follow the aztec and make a visual approach to runway 33R. I began a descent and noticed that the aztec's course was closing on mine. I made a steep right turn, now flying directly towards the airport, keeping the aztec in sight off my left wing. Although I was now in landing confign, my descending airspeed was greater than the aztec's. At this point I informed bwi tower that I was unable to follow the traffic and would need a right 360 degree turn to do so. I was told to stand by. After a delay, I was cleared to land ahead of the aztec. The angle of vectoring between my aircraft and the aztec was too sharp. The aztec was not only moving left to right, but flying towards me. I did not realize this when the clearance to follow the traffic was given due to it being night. My altitude at that point required a steep descent and although I was in landing confign, I was too fast to follow. Better ATC planning would have prevented this occurrence.
Original NASA ASRS Text
Title: RPTR SIT OF RPTR'S ACFT COMING INTO CLOSE PROX TO AN AZTEC IT WAS VECTORED TO FOLLOW FOR A VISUAL APCH. RPTR IMPLIES THE VECTORING ANGLE WAS TOO SHARP TO FOLLOW THE AZTEC WHICH WAS MOVING TOWARD THE RPTR L TO R. NMAC.
Narrative: I WAS VECTORED IN AN ARC FROM THE NW TO THE SE OF BWI. I HAD PIPER AZTEC TFC AT MY 11 O'CLOCK POS AND WAS DIRECTED TO MAINTAIN 4000 FT. AS I REACHED A POINT 5-7 NM FROM THE APCH END OF RWY 33 AT BWI, I WAS CLRED TO FOLLOW THE AZTEC AND MAKE A VISUAL APCH TO RWY 33R. I BEGAN A DSCNT AND NOTICED THAT THE AZTEC'S COURSE WAS CLOSING ON MINE. I MADE A STEEP R TURN, NOW FLYING DIRECTLY TOWARDS THE ARPT, KEEPING THE AZTEC IN SIGHT OFF MY L WING. ALTHOUGH I WAS NOW IN LNDG CONFIGN, MY DSNDING AIRSPD WAS GREATER THAN THE AZTEC'S. AT THIS POINT I INFORMED BWI TWR THAT I WAS UNABLE TO FOLLOW THE TFC AND WOULD NEED A R 360 DEG TURN TO DO SO. I WAS TOLD TO STAND BY. AFTER A DELAY, I WAS CLRED TO LAND AHEAD OF THE AZTEC. THE ANGLE OF VECTORING BTWN MY ACFT AND THE AZTEC WAS TOO SHARP. THE AZTEC WAS NOT ONLY MOVING L TO R, BUT FLYING TOWARDS ME. I DID NOT REALIZE THIS WHEN THE CLRNC TO FOLLOW THE TFC WAS GIVEN DUE TO IT BEING NIGHT. MY ALT AT THAT POINT REQUIRED A STEEP DSCNT AND ALTHOUGH I WAS IN LNDG CONFIGN, I WAS TOO FAST TO FOLLOW. BETTER ATC PLANNING WOULD HAVE PREVENTED THIS OCCURRENCE.
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.