Light Transport; Low Wing; 2 Turboprop Eng
Flight Crew Air Transport Pilot (ATP)
Communication Breakdown
Conflict NMAC; Deviation / Discrepancy - Procedural Published Material / Policy
General None Reported / Taken
Human Factors
On taxi out; we declared our taxi intentions and intended departure runway with DLG radio and area traffic on 123.6. DLG radio acknowledged and advised 'no known traffic'. We taxied via Alpha; declared our back taxi for runway 1; cleared the area visually for traffic and began our back taxi. At this time a Navajo called on frequency 5 miles southwest inbound to land. DLG radio advised the aircraft we were on the back taxi for runway 1. He acknowledged. We lined up for takeoff; performed the before takeoff checklist; cleared the area; and began our departure roll. At Vr I; the flying pilot; began to rotate and we lifted off. The pilot monitoring (PM); after retracting the landing gear; pointed out the Navajo traffic coming over the tree line at our 1 o'clock. The aircraft was very low and very close to the runway coming nearly right at us. He appeared to be making a very tight right downwind (incorrect direction) for Runway 1 (within 500 feet lateral separation). Since we were too low and slow to safely maneuver I attempted to call the aircraft twice one 123.6 to ensure he saw us and was at least avoiding us; although he was incredibly too close for comfort. We received no response. We climbed through his altitude of 300 feet as he passed close by our right wing.  The PM observed him turn immediately behind our aircraft to cross the field at 300 feet to enter left traffic (the proper direction) for runway 1. We had no TA/RA on TCAS as we did not receive his transponder. At 10;000 feet I contacted DLG radio on 122.3 and asked for the N number of the Navajo. The flight continued on as normal. Pilots need to be making appropriate radio calls within 10 nm of airfields. This includes a 10 nm call out; crossing the field; position in the pattern; etc. Aircraft should also fly at appropriate pattern altitudes; and absolutely must maintain a safe distance from other aircraft.
Twin engine turboprop Captain departing Runway 1 at PADL experiences an NMAC with a Navajo arriving from the northwest on a very close in and low right downwind. DLG Radio had made the Navajo pilot aware of the twin's departure.