Update: According to information from the Maintenance Division, rapid depressurization at flight level 250. Pressure leak was coming from the right hand (R/H) forward emergency door seal. Seal was found full of frozen water.
An Air Inuit de Havilland DHC-8-314 (C-FEAI/ AIE808) from Montreal, QC (CYUL) to Kuujjuarapik, QC (CYGW) declared an emergency due to a pressurization problem at FL250 and executed an emergency descent. Emergency cancelled once stabilized at 10,000 feet. The aircraft requested change of destination to Radisson, QC (CYGL) for servicing. Impact: Controller vectored a Hydro-Quebec de Havilland DHC-8-402 (C-GHQP/ HYD180) from Chibougamau, QC (CYMT) to Nemiscau, QC (CYHH), at FL200, to the East to provide space for the descent as a precaution. Regional Operations Control Centre (ROCC), National Operations Centre (NOC), Aviation Operations Centre advised.
UPDATE TSB#A15Q0104: An Air Inuit DHC-8 314 (C-FEAI/AIE808) with three crew members and 21 passengers on board was on an IFR flight from Montréal (CYUL), QC, to Kuujjuarapik, QC (CYGW). At 45 NM northwest of Chibougamau airport (CYMT), QC, and at FL250, the aircraft experienced rapid cabin depressurization. The crew conducted an emergency descent to 10 000 ft and cancelled the emergency once stabilized. They then asked to change their destination to La Grande Rivière Airport (CYGL), QC, where the aircraft landed without difficulty. No one was injured. July 23, 2015 Update: According to the maintenance personnel, the cause of the loss of pressurization was an emergency exit door seal that froze. The company plans to implement a procedure to have the seals of doors and emergency exits dried with nitrogen on a bimonthly basis.

A Communication Instructions for Reporting Vital Intelligence Sightings (CIRVIS) report was received in the Charlesbourg area. The report was sent to the eastern sector?s Regional Operations Control Centre (ROCC).

A resident of Evain, QC, called to report a suspicious aircraft [unidentified flying object (UFO)] flying near his home. A report was sent to the eastern sector's Regional Operations Control Centre (ROCC).

A vital intelligence sightings (CIRVIS) report was received for the St-Isidore area. The information was sent to the Regional Operations Control Centre (ROCC).

A privately owned Ward Star 125 was on a VFR flight from St-Jean (CYJN) to an unknown destination. At 0005Z, the aircraft was seen taxiing on Taxiway CHARLIE and taking off from Runway 29 without communicating with the tower. After takeoff, the aircraft headed north and the tower controller informed the Montréal terminal control unit (TCU) of the situation and the possibility that the aircraft may enter Class C airspace even though it did not seem to have a radio or transponder. The TCU continued to follow the aircraft on the primary radar and saw it cross St-Hubert (CYHU) controlled airspace, northbound, at an altitude estimated by the control tower to be approximately 1 600 ft. The TCU manager informed the sector?s Regional Operations Control Centre (ROCC) so that the flight could continue to be followed. The target eventually disappeared from the primary radar when it was approximately 10 NM north of the Mirabel (YMX) VHF omnidirectional range (VOR). There was no impact on ATC operations.

C-GNLN, a Boeing 737-200 operated by Nolinor Aviation as flight number NRL561, was on an IFR flight from Kattiniq/Donaldson (CTP9) to Kuujjuaq (CYVP). While the aircraft was under radar coverage, it accidentally squawked the communication outage code. The transponder was reinitialized and the system returned to normal. The eastern sector?s Regional Operations Control Centre (ROCCE) was notified.

Near the Les Cèdres (CSS3) airport, an aircraft squawking the VFR transponder code was observed at an unconfirmed altitude of 5 400 ft crossing the final approach of Runway 06L at Montréal/Trudeau (CYUL), which was active, and continuing into Class C airspace. The pilot of a Porter Airlines aircraft that was in the area correctly estimated the altitude. The aircraft was then observed landing at St-Mathieu-de-Beloeil (CSB3) at 1852Z. An attempt was made to contact the St-Mathieu-de-Beloeil airport operator to identify the aircraft that had landed, but it was unsuccessful. The eastern sector?s Regional Operations Control Centre (ROCCE), the National Operations Centre (NOC), the Manager of Area Control Centre Operations (MACCO) and the general manager of IFR operations were notified.

The Government of Canada, Department of National Defense Agusta AB412 aircraft (operating as LION22) was on a local VFR flight in the vicinity of Petawawa Airport (CYWA). The aircraft accidently squawked code 7700 for short duration. JRCC Trenton and ROCCE were advised.

The Russian Federation Polet Cargo Airlines Antonov AN-124-100 aircraft (operating as POT310) was on an IFR flight from C.F.B. Trenton (CYTR) to Shannon International Airport, Ireland (EINN). The aircraft experienced a loss of communications between 1430Z and 1437Z. Ops. impact -- another aircraft had to change their course. North Bay I.F.S.S. staff advised. __________ POT310 a subi une panne de communication entre 1430Z et 1437Z. Impact: un aéronef a dû être changé de cap. ROCCE YYB avisé.

Unidentified Cessna 421 on code 1200 @ 13,700' tracking 161 degrees observed approximately 40 miles north of Grand Forks BC entering U.S. airspace. No flight plan data was on file with Kamloops FIC. Seattle ACC manager and ROCC were advised of target.At 1305Z McCord Air Force base personnel advised that a C421B aircraft landed at Burns, Oregon and was seized with approximately 800 pounds of drugs on board.

At 0157z, AT&T had a T1 trunk failure somewhere between Vancouver city and Vancouver International airport (CYVR), causing the loss of the following services: Wallensteen Radar - all three lines (2 radar and the maint. line) 133.5 (Airports) 134.55 (East) 134.2 (Airports) 413 circuit 512 circuit 581 circuit 582 circuit North Bay ROCC Hotline and Landline Impact on ACC and users was minimal, due to time of day and low traffic volume. Sectors with frequency loss were able to utilize other frequencies with similar coverage area and circuit loss was minimized with outside line and/or hotline communication. Loss of radar was handled with procedural separation with no significant restrictions on the users. Eastside and Airports complexes were most affected with radar frequency and landline losses. The West Complex, the Terminals and ATOS also affected by Circuit losses. Outside facilities where circuits terminate were also affected. Full services were restored at 0714z.

Four pilots of aircraft flying in the Quebec area (ARN8730, FCON434, APO713 and ARN8238) reported observing a big blue and green light fall and break up into several small pieces. Also, FCON434 reported seeing a white light climbing. RCC Trenton and ROCC EAST were advised. Quatre pilotes d'aéronef volant dans la région de Québec (ARN8730, FCON434, APO713 et ARN8238) ont rapporté avoir observé une grosse lumière bleue et verte tomber et se fragmenter en plusieurs morceaux. De plus, FCON434 rapporte avoir vu une lumière blanche en montée. RCC Trenton et ROCC EAST avisés.

After N99BA, a Beech Queen Air, departed Iqaluit for Sondre Stromfjord (BGSF), the aircraft was cleared from 9,000 feet to 11,000 feet and the pilot subsequently sqawked 7600. ROCC East lost RADAR contact. BGSF reported radio contact with N99BA at 1735Z. N99BA continued to destination without further incident. OPI - System Safety

Total UPS failure resulting in loss of all equipment connected to it including (but not limited to) MIDS, radar, and all radios (Baffin HF, Baffin VHF, Arctic VHF and North Bay VHF). Battery backup failed after approximately one hour. Commercial power available but only connected to overhead lighting. Phone lines remained operable. Began connecting 1 MIDS system to commercial power but problem was fixed prior to getting it online. Ops. Impact -- all services impact as no radio communications were available; weather briefings by phone were not severely affected until the IM completely failed.

All communications and radar data for the North Bay ROCC IFSS failed at 2048Z. The duty operators notified the appropriate centres and subsequently sent ADIS messages to the appropriate FSS and have NOTAMS issued for all sites. At 2115Z, it was determined that the Anik satellite was down for an unknown length of time. At 0310Z, all systems were back up and running. Advisories were issued to the same agencies as before and NOTAMS cancelled.

Aircraft departed Bermuda 2215Z with no flight plan and did not received a departure clearance. ROCC, RCMP and NY ARTCC were advised. Aircraft reported over Yarmouth at approximatly 0330Z and confirmed its destination as Moncton. RCMP and Customs advised. Aircraft attempted to contact Moncton Centre but was unable due to poor radio. Transponder code 7600 at 0405Z. Aircraft landed Moncton at 0434Z.

At 1128Z, all North Bay ROCC IFSS communications at Cambridge Bay failed. Outage was caused by a fire at the site. NOTAM issued RCO and ICAO frequencies U/S til aprx 1300Z. NOTAM extended til 1500Z. Technician had problem solved by 1700Z. Ops. Impact -- unknown.

Pirate 01 was cleared by ATC to operate in the "Liverpool Block" special use airspace. The aircraft was observed on radar, leaving the assigned airspace and proceeded to within 7 miles or Air Nova 840, Dash 8 enroute Halifax to Yarmouth at 16,000 feet. Unable to communicate with Pirate 01 who was supposed to be communicating with Military Control (ROCC East).