Date: 201603
Local time of day: 1201-1800
Location: PIT.TRACON, PA
Flight conditions: VMC
Light: Daylight
Aircraft: Small Aircraft; Low Wing; 1 Eng; Retractable Gear
Operator: Personal
Operating under: Part 91
Flight plan: IFR
Mission: Personal
Flight phase: Climb
Airspace: Class G BVI
ATC / advisory: TRACON PIT
Second aircraft: Small Aircraft; Low Wing; 1 Eng; Fixed Gear
Reporter organization: Government
Reporter function: Approach; Departure
Reporter qualification: Air Traffic Control Fully Certified
Human factors: Communication Breakdown; Situational Awareness
Anomaly: ATC Issue All Types; Conflict Airborne Conflict; Deviation / Discrepancy - Procedural Published Material / Policy
Detector: Person Air Traffic Control
When detected: In-flight
Result: Air Traffic Control Issued Advisory / Alert; Air Traffic Control Issued New Clearance; Flight Crew Took Evasive Action
Contributing factors: Airport; Airspace Structure; Chart Or Publication; Company Policy; Procedure
Primary problem: Company Policy

Narrative: A Non FAA Tower has recently changed its hours to be closed on Sundays. On Sunday mornings; there are many aircraft in the immediate vicinity of the airport. Aircraft X called via the RCO and was issued his clearance. He stated he was number 3 for departure. I instructed him to hold for release and advise number 1 ready to go. Aircraft X called number 1 and I released him via enter controlled airspace via heading 280. This was done due to the amount of VFR traffic in the pattern. I assumed a 280 heading would get the aircraft out of the local traffic pattern safely and allow for a turn on course to the southeast once Aircraft X got above any traffic in the local area. I was coordinating and heard a Conflict Alert. I looked up to see Aircraft X less than a mile behind a VFR target and closing. I issued traffic and then a traffic alert to Aircraft X who hadn't check on the frequency. I observed Aircraft X turn southeast to avoid the VFR traffic. He checked on and we discussed the fact he had to turn to avoid the VFR aircraft in the pattern. I did not brasher warn the aircraft as I thought his deviation from his assigned heading was for safety. [Later that day]; Aircraft Y was conducting an approach. Conflict Alert activated on approximately a 3 mile final due to one of several VFR targets in the traffic pattern. I did not issue a safety alert. Aircraft Y was instructed to change to advisory frequency prior to the conflict being observed. I did issue caution numerous VFR targets in the vicinity of the airport to Aircraft Y prior to frequency change. There is a high level of traffic in the pattern at this airport especially on Sunday morning. The non-federal tower being closed makes no safety sense. This is a recent change in operating hours and was done as a cost saving measure. Study the traffic at the airport and make recommendations to the Non-Federal provider on hours of operation. This Tower should reestablish some sort of Sunday hours based on traffic and services required. A study of traffic count should be used to establish these hours.




Synopsis: PIT TRACON Controller reported that BVI Tower; a non-FAA facility; recently changed its hours to be closed on Sundays. The PIT Controller recommended the Tower be open on Sundays due to the high levels of traffic.