Narrative:

During descent from enroute structure; flying pilot conducted approach briefing pertaining to visual arrival to uncontrolled airport with a single runway; winds favored landing runway 16. The commercial airport diagram was examined for note pertaining to non-standard traffic pattern direction; no such note was observed. Pilot flying noted absence of such note during approach briefing and indicated that all turns would be the left. Crew discussed method of pattern entry and; given direction of arrival resulting from ATC clearance prior to canceling IFR clearance; a left crosswind entry was briefed. Position reports were made on CTAF while approaching airport and upon approaching left crosswind. While established on left crosswind; two other aircraft announced themselves to be on right downwind for runway 16. A dialog between pilot flying and one of these aircraft resulted in the other aircraft stating the airport utilized a right pattern for runway 16. Since this could not be confirmed and given the absence of such information on the commercial chart airport diagram; the crew elected to turn a left downwind and continue a left pattern until touchdown. After landing; crew referenced the airport facility directory; which listed a right pattern for this runway. The commercial airport chart was again examined; but no indication of a right traffic pattern direction could be found. Suggest submitting notification to the commercial chart publisher regarding this publishing error. Also suggest adding a note to my company briefing sheets for mcc regarding this error until such time as the commercial chart manufacturer publishes a corrected airport diagram which includes right traffic pattern information for runway 16. It is also worth noting the value of referencing the AFD when dispatched to uncontrolled airports.

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Original NASA ASRS Text

Title: A Captain noted that the commercial airport chart for MCC does not indicate that the airport uses a right traffic pattern and so they elected to continue a left traffic pattern opposite other traffic.

Narrative: During descent from enroute structure; flying pilot conducted approach briefing pertaining to visual arrival to uncontrolled airport with a single runway; winds favored landing Runway 16. The commercial airport diagram was examined for note pertaining to non-standard traffic pattern direction; no such note was observed. Pilot flying noted absence of such note during approach briefing and indicated that all turns would be the left. Crew discussed method of pattern entry and; given direction of arrival resulting from ATC clearance prior to canceling IFR clearance; a left crosswind entry was briefed. Position reports were made on CTAF while approaching airport and upon approaching left crosswind. While established on left crosswind; two other aircraft announced themselves to be on right downwind for Runway 16. A dialog between pilot flying and one of these aircraft resulted in the other aircraft stating the airport utilized a right pattern for Runway 16. Since this could not be confirmed and given the absence of such information on the commercial chart airport diagram; the crew elected to turn a left downwind and continue a left pattern until touchdown. After landing; crew referenced the Airport Facility Directory; which listed a right pattern for this runway. The commercial airport chart was again examined; but no indication of a right traffic pattern direction could be found. Suggest submitting notification to the commercial chart publisher regarding this publishing error. Also suggest adding a note to my company briefing sheets for MCC regarding this error until such time as the commercial chart manufacturer publishes a corrected airport diagram which includes right traffic pattern information for Runway 16. It is also worth noting the value of referencing the AFD when dispatched to uncontrolled airports.

Data retrieved from NASA's ASRS site as of July 2013 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.