Flight Crew Air Transport Pilot (ATP)
Situational Awareness; Confusion; Communication Breakdown
Deviation / Discrepancy - Procedural Published Material / Policy
General None Reported / Taken
Chart Or Publication
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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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.