Flight crew of a corporate turboprop aircraft reported a near miss while on 3 mile final approach.

Attributes
ACN	1477796
Time
Date	201708
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	PC-12
Operating Under FAR Part	Part 91
Flight Phase	Final Approach
Route In Use	Visual Approach
Flight Plan	IFR
Aircraft 2
Make Model Name	PA-28 Cherokee/Archer/Dakota/Pillan/Warrior
Operating Under FAR Part	Part 91
Flight Phase	Final Approach
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Multiengine Flight Crew Instrument Flight Crew Air Transport Pilot (ATP) Flight Crew Flight Instructor
Experience	Flight Crew Last 90 Days 90 Flight Crew Total 2550 Flight Crew Type 970
Person 2
Function	First Officer Pilot Not Flying
Qualification	Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP) Flight Crew Flight Instructor Flight Crew Instrument
Events
Anomaly	Conflict NMAC
Miss Distance	Horizontal 300 Vertical 50

Narrative:

During the cleared visual approach ARTCC had switched us from enroute to tower control at 6.6NM. My co-pilot; pilot not flying (PNF); was making radio calls and was unable to make a transmission until 5NM out from the field. Incident aircraft a PA-28 was indicating that he was inbound to the field 3.3NM and was going to circle for spacing. We were still inbound and made a call at 3NM with traffic ahead of us in sight. We did not receive a direct acknowledgment from tower; however tower told the cherokee to now follow the pilatus and to acknowledge he had pilatus traffic in sight; to which he replied traffic in sight. Shortly after this call the PNF quickly took control to avoid an impending merge from the traffic (on a right base) and initiated an immediate left-hand descending turn. The controls were then reverted back to pilot flying (PF) shortly after traffic was in sight to the PF. The PF continued with a descending left turn and leveled the aircraft at approximately 700-800 feet. Once PF decided incident aircraft was not a factor the PF then elected to continue the approach once he knew we were ahead of the traffic.PNF told tower that 'the cherokee must of not had us in sight and that we needed to conduct an evasive maneuver'. Tower replied that he thought the two aircraft were parallel. The cherokee then told tower that 'I thought I was following the cessna; sorry'. PNF inquired tower for landing clearance as the aircraft was now inside of a mile final; we were then cleared to land. TCAS did not show any threats nor did we get a TA warning. Egpws did issue a sink rate and terrain pull up warnings. At no time were we at a bank angle or pitch angle that would have provided a potential for CFIT or loss of control. PF called the tower land line approximately 20 minutes afterwards to give a recollection of events and categorized the event as a near miss.

Original NASA ASRS Text

Title: Flight crew of a corporate turboprop aircraft reported a near miss while on 3 mile final approach.

Narrative: During the cleared visual approach ARTCC had switched us from enroute to Tower Control at 6.6NM. My co-pilot; Pilot Not Flying (PNF); was making radio calls and was unable to make a transmission until 5NM out from the field. Incident aircraft a PA-28 was indicating that he was inbound to the field 3.3NM and was going to circle for spacing. We were still inbound and made a call at 3NM with traffic ahead of us in sight. We did not receive a direct acknowledgment from Tower; however Tower told the Cherokee to now follow the Pilatus and to acknowledge he had Pilatus traffic in sight; to which he replied traffic in sight. Shortly after this call the PNF quickly took control to avoid an impending merge from the traffic (on a right base) and initiated an immediate left-hand descending turn. The controls were then reverted back to Pilot Flying (PF) shortly after traffic was in sight to the PF. The PF continued with a descending left turn and leveled the aircraft at approximately 700-800 feet. Once PF decided incident aircraft was not a factor the PF then elected to continue the approach once he knew we were ahead of the traffic.PNF told Tower that 'the Cherokee must of not had us in sight and that we needed to conduct an evasive maneuver'. Tower replied that he thought the two aircraft were parallel. The Cherokee then told Tower that 'I thought I was following the Cessna; sorry'. PNF inquired Tower for landing clearance as the aircraft was now inside of a mile final; we were then cleared to land. TCAS did not show any threats nor did we get a TA warning. EGPWS did issue a sink rate and terrain pull up warnings. At no time were we at a bank angle or pitch angle that would have provided a potential for CFIT or loss of control. PF called the Tower land line approximately 20 minutes afterwards to give a recollection of events and categorized the event as a near miss.

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.