Emergency locator transmitter (ELT) signal reported by several aircraft. Joint Rescue Coordination Centre (JRCC) Trenton advised of accidental activation by a 856058 Alberta Ltd. Robinson R44 II (C-FDMR). No other impact to operations.

A C&F Ehlers Farming Robinson R44 II (C-FDMR) from origin unknown to Springbank, AB (CYBW) entered the control zone without authorization and without transponder on.

UPDATE TSB reported that Alta Flights CNS 601, an SA227-DC, registration C-FDMR, was en route north from Calgary Intl to Edmonton City Centre at 16,000 feet and was given clearance to descend to 8,000 feet. Centennial Flight Centre CNS 351, a PA-31, registration C-FVVS, was en route south from Edmonton City Centre to Lethbridge at 9,000 feet. The flights passed with 1.4 NM lateral and 500 feet vertical separation where required separation was 3 NM or 1,000 feet.
CNS 601, a Metro III, was northbound IFR to City Centre Airport (YXD) from Calgary and was cleared to descend from 16,000 feet down to 8,000 feet. CNS 351, a Piper Navajo, was southbound IFR from YXD to Lethbridge at 9,000 feet. The two a/c passed with 1.4 miles and 500 feet vertical between them. Separation required was 3 miles lateral or 1,000 feet vertical.
UPDATE ANS and Airspace reported that Nav Canada will hold an Operational Safety Investigation concerning this occurrence.

While on a local training flight near Edmonton International Airport, the crew of C-FDMR, a Metro III, advised the TCU Controller they had shut down one engine for part of their training exercise and then couldn't get it re-started. They returned to YEG immediately and equipment was called out. The aircraft landed safely on Runway 12 at 1659Z. No impact on operations. TSB will contact the company.
UPDATE TSB reported that the Fairchild SA227-DC was on a local training flight when the pilot advised the TCU Controller he was shutting down one engine as part of their training. The Garrett TPE331-12UHR-701G, s/n P-70199 would not re-start, and the pilot returned to the field immediately. AFF was called out, the aircraft landed safely on Runway 12, and there was no impact on other operations. Maintenance checked all the systems and found everything operating normally. Some water was found in the left side landing gear squat switch and cleaned. A satisfactory test flight was conducted and the aircraft returned to service.

UPDATE TSB reported that CNS 213, a Fairchild SA227-DC, registration C-FDMR, was northbound at 16,000 feet ASL. CPB 888, British Aerospace Jetstream 3112, registration C-GKGM, was southbound at 16,000 feet. Just prior to the aircraft passing each other, the controller at Edmonton TCU alerted the Red Deer Sector Controller of the conflict between the flights. The Controller attempted to resolve the problem but was unable to act in time to maintain separation. At about 60 miles south of Edmonton, in the vicinity of Red Deer, the flights passed with 200 feet vertical and 1.34 miles lateral separation. The required separation was 1,000 feet vertical or 5 miles lateral. Neither aircraft was equipped with TCAS.
CNS 213, a Metro III, was northbound from Calgary to City Centre Airport at 16,000 feet ASL. CPB 888, a BAe Jetstream 31, was southbound from Fort McMurray to Calgary also at 16,000 feet ASL. At about 60 miles south of Edmonton, the flights passed with 200 feet vertical and 1.34 miles lateral separation. Separation required is 1,000 feet vertical or 5 miles lateral.
UPDATE TSB has upgraded their investigation from Class 5 to Class 3.

The crew of C-FDMR, a Metro III, advised Calgary TCU that they had a fire warning indiction and were requesting priority for landing. Emergency vehicles were called out but were not needed since the aircraft landed safely and taxied to the parking area. The emergency crew checked the runway for contamination but found nothing and Runway 16 was deemed usable at 0149Z. Two other aircraft had to be sent for Runway 10 while Runway 16 was being inspected and operations returned to normal at 0149Z.
UPDATE TSB reported that the Fairchild SA227-DC was on approach to the Calgary airport when the lavatory fire light illuminated. The flight crew advised the TCU that they had a fire warning indication and requested priority for landing. The landing was accomplished without further incident with AFF standing by. The First Officer carried a portable cabin fire extinguisher to the lavatory and examined the lavatory area immediately after landing. He observed no smoke or fire, and the fire warning light went out as the aircraft taxied to the hangar. Maintenance personnel inspected and function checked the lavatory smoke detection system and found no faults, and returned the aircraft to service.