A caravan 208B flight crew departed runway xy and turned to 165 degrees direct to their destination ...

Attributes
ACN	1241829
Time
Date	201502
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Caravan 208B
Operating Under FAR Part	Part 135
Flight Phase	Initial Climb
Route In Use	Direct
Flight Plan	IFR
Aircraft 2
Make Model Name	Beechcraft Twin Piston Undifferentiated or Other Model
Flight Phase	Descent
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Commercial Flight Crew Instrument Flight Crew Multiengine
Experience	Flight Crew Last 90 Days 291 Flight Crew Total 1508 Flight Crew Type 1108
Events
Anomaly	Conflict NMAC Deviation - Procedural Published Material / Policy
Miss Distance	Horizontal 200 Vertical 200

Narrative:

We departed from runway xy. On CTAF; we announced departing the pattern to the south (track of 165 degrees direct to destination as cleared). An inbound baron they were south-west of the airport entering the downwind for runway xy. As runway xy has a published right-hand traffic pattern; we assumed the traffic would be staying west of our position by several miles; and would be no factor. I ensured all exterior lights remained on and switched the recognition lights to 'wig-wag' mode to increase viability. Shortly after; while climbing to our clearance altitude; we made visual contact with an aircraft above us at approximately our 1-o'clock position and descending. I immediately began an evasive maneuver by descending and turning away. Once clear and resuming our climb; the baron pilot asked who he almost hit with about 300 feet to spare. I informed him that runway xy had a published right-hand pattern; and that his incorrect position report indicated that he should have been to the south-west of the airport and no conflict. Instead; his incorrect left-downwind entry placed him in our departure corridor. He responded by stating he was unaware that it was a published non-standard pattern for runway xy.

Original NASA ASRS Text

Title: A Caravan 208B flight crew departed Runway XY and turned to 165 degrees direct to their destination as cleared. When a Baron reported inbound from the southwest to the downwind for Runway XY the Caravan crew believed there would be no conflict; since Runway XY utilizes a right hand pattern. A 200 foot vertical and horizontal NMAC resulted when the Baron pilot; admittedly; was unaware of the non-standard right hand pattern and had instead proceed to the east to enter left traffic.

Narrative: We departed from runway XY. On CTAF; we announced departing the pattern to the south (track of 165 degrees direct to destination as cleared). An inbound Baron they were south-west of the airport entering the downwind for Runway XY. As RWY XY has a published right-hand traffic pattern; we assumed the traffic would be staying west of our position by several miles; and would be no factor. I ensured all exterior lights remained on and switched the recognition lights to 'wig-wag' mode to increase viability. Shortly after; while climbing to our clearance altitude; we made visual contact with an aircraft above us at approximately our 1-o'clock position and descending. I immediately began an evasive maneuver by descending and turning away. Once clear and resuming our climb; the Baron pilot asked who he almost hit with about 300 feet to spare. I informed him that Runway XY had a published right-hand pattern; and that his incorrect position report indicated that he should have been to the south-west of the airport and no conflict. Instead; his incorrect left-downwind entry placed him in our departure corridor. He responded by stating he was unaware that it was a published non-standard pattern for Runway XY.

Data retrieved from NASA's ASRS site 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.