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Pilot of VFR M20P experienced near midair collision with inbound C152 when he flew 100 degree heading after takeoff vice 010 degree heading assigned by btv ATCT local controller.
| Attributes | |
| ACN | 580329 |
| Time | |
| Date | 200304 |
| Day | Tue |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : btv.airport |
| State Reference | VT |
| Altitude | msl single value : 1700 |
| Environment | |
| Flight Conditions | VMC |
| Light | Dusk |
| Aircraft 1 | |
| Controlling Facilities | tower : btv.tower tower : ifp.tower |
| Operator | general aviation : personal |
| Make Model Name | M-20 G Statesman |
| Operating Under FAR Part | Part 91 |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | departure : on vectors |
| Flight Plan | None |
| Aircraft 2 | |
| Controlling Facilities | tower : btv.tower |
| Operator | general aviation : personal |
| Make Model Name | Cessna 150 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | descent : intermediate altitude |
| Route In Use | arrival : on vectors |
| Person 1 | |
| Affiliation | other |
| Function | flight crew : single pilot |
| Qualification | pilot : private pilot : instrument |
| Experience | flight time last 90 days : 30 flight time total : 1350 flight time type : 700 |
| ASRS Report | 580329 |
| Person 2 | |
| Affiliation | other |
| Function | flight crew : single pilot |
| Events | |
| Anomaly | conflict : nmac non adherence : clearance other spatial deviation |
| Independent Detector | other flight crewa |
| Resolutory Action | controller : issued new clearance flight crew : took evasive action |
| Consequence | faa : reviewed incident with flight crew |
| Miss Distance | horizontal : 300 vertical : 100 |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
I was cleared to take off on runway 33, fly heading 010 degrees. I turned to 100 degrees upon passing 400 ft AGL. (My on-course heading would be 140 degrees) at about 1700 ft AGL, I noticed a C150 (C152) in a descent off of my left wing. I dove left to avoid collision (300 ft or less separation). The tower controller said something along the lines of 'I gave you a heading of 010 degrees in order for you to miss that traffic, switch to departure.' human performance: I heard and read back 'fly heading 100 degrees.' I feel that I assumed a heading close to my on-course heading of 140 degrees, thus wishfully believed that 100 degrees was what the tower controller said. The tower controller missed my passing through 010 degrees and flying on a heading of 100 degrees for 1 min as a contributing factor.
Original NASA ASRS Text
Title: PLT OF VFR M20P EXPERIENCED NMAC WITH INBOUND C152 WHEN HE FLEW 100 DEG HDG AFTER TKOF VICE 010 DEG HDG ASSIGNED BY BTV ATCT LCL CTLR.
Narrative: I WAS CLRED TO TAKE OFF ON RWY 33, FLY HDG 010 DEGS. I TURNED TO 100 DEGS UPON PASSING 400 FT AGL. (MY ON-COURSE HDG WOULD BE 140 DEGS) AT ABOUT 1700 FT AGL, I NOTICED A C150 (C152) IN A DSCNT OFF OF MY L WING. I DOVE L TO AVOID COLLISION (300 FT OR LESS SEPARATION). THE TWR CTLR SAID SOMETHING ALONG THE LINES OF 'I GAVE YOU A HDG OF 010 DEGS IN ORDER FOR YOU TO MISS THAT TFC, SWITCH TO DEP.' HUMAN PERFORMANCE: I HEARD AND READ BACK 'FLY HDG 100 DEGS.' I FEEL THAT I ASSUMED A HDG CLOSE TO MY ON-COURSE HDG OF 140 DEGS, THUS WISHFULLY BELIEVED THAT 100 DEGS WAS WHAT THE TWR CTLR SAID. THE TWR CTLR MISSED MY PASSING THROUGH 010 DEGS AND FLYING ON A HDG OF 100 DEGS FOR 1 MIN AS A CONTRIBUTING FACTOR.
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.