October 27, 1999

Incident at TORONTO / BILLY BISHOP TORONTO CITY AIRPORT ON (CYTZ)

The aircraft ONT364 was on an IFR flight from London Airport (CYXU) to Toronto City Centre (CYTZ). ONT364 at mid downwind for runway 26 at 1700 feet advised he was climbing due to a TCAS alert. Three other aircraft were in the zone : ONT365 1 mile final runway 26, GYAN (C172) 2 miles final runway 26 and QYA overhead the tower at 2400 feet. A discussion with the pilot revealed that the TCAS may have been YAN on final due to the angle that ONT364 joined the downwind may have caused the TCAS. The pilot had all 3 in sight, however the pilot thought there may have been a fourth which there was not. Ops. impact - unknown. S.O.B. - unknown

September 1, 1999

Incident at south of Grimsby

UNKNOWN REGISTRATION UNKNOWN MAKE/MODEL UNKNOWN OWNER VFR flight with UNKNOWN ORIGIN/DESTINATION The flight crew on ONT364 reported a TCAS alert on an unknown VFR aircraft at 4,500 feet while flying south of Grimsby. The unknown VFR aircraft was not in communication with Toronto ACC. No evasive action was taken and ONT364 passed behind the unknown VFR aircraft, approximately 700 feet below it. Ops. impact -- unknown. ONT364 had 14 S.O.B. -- three (3) crew; 11 passengers. O.P.I.: PAS

December 10, 1998

Incident at MONTRÉAL / PIERRE ELLIOTT TRUDEAU INTL QC (CYUL)

At 2236Z, ONT364 (DH83), on an IFR flight from Toronto/City Centre (CYTZ) to Dorval (CYUL), was 2 NM in final when it advised the Montreal/Dorval control tower that it had a bad landing gear message. The crew thereupon requested vectors for another approach. At 2250Z, the pilot requested emergency services. At 2303Z, the aircraft touched down without incident on Runway 24R at CYUL. No delay caused to other aircraft. UPDATE: The TSB investigation revealed that the landing gear system showed two green lights for the main gear and a red light for the nose gear. While circling to land, the crew tried to extend the emergency landing gear. The system still gave the same message. When a check was made of the emergency landing gear, three green lights were showing. When the aircraft was 10 miles in final, the landing gear showed extended and locked. According to Air Ontario, the same problem occurred on 14 October. À 2236Z, ONT364 (DH83) sur un vol IFR de Toronto/City Center (CYTZ) vers Dorval (CYUL), était 2nm en finale lorsqu'il a avisé la tour de contr,le de Montréal/Dorval qu'il avait une mauvaise indication de train d'atterrissage. L'équipage a alors demandé des vecteurs pour une autre approche. À 2250Z, le pilote a demandé les services d'urgence. À 2303Z, l'appareil s'est posé sans encombre sur la piste 24R à CYUL. Aucun délai occasionné aux autres aéronefs. MISE À JOUR: L'enquête du BST a révélé que le système de train d'atterrissage indiquait deux lumières vertes sur le train principal et une lumière rouge sur le train avant. En effectuant un tour de piste, l'équipage a tenté de sortir le train d'atterrissage de secours. Le système indiquait toujours la même chose. Une vérification du train d'atterrissage de secours a été effectuée et indiquait trois lumières vertes. Alors que l'appareil était dix milles en finale, le train d'atterrissage indiquait sorti et verrouillé. Selon la compagnie Air Ontario, le même problème s'est manifesté le 14 octobre dernier.

October 27, 1997

Incident at TORONTO / LESTER B. PEARSON INTL ON (CYYZ)

The aircraft (C-GJMI, operating as ONT333) departed Toronto (City Centre) Airport (CYTZ) for Ottawa (M-CIA) (CYOW). The aircraft developed an oil pressure problem and returned to land at Toronto (LBPIA) (CYYZ). The aircraft landed without further incident at 0033Z. Supplemental information from T.S.B Initial Notification (#A97O0219): During the en-route climb, the flight crew observed a low oil pressure indication for the #2 engine. The oil pressure gauge indicated 45 PSI (normal operating range is 55-65 PSI). The master caution is to illuminate when the oil pressure reaches 45 PSI or less; however, the flight crew did not receive a master caution light. They reduced the power on the #2 engine and diverted the DHC-8 to Toronto (LBPIA). ERS was on standby and the aircraft landed without further incident. Maintenance determined that the oil pressure gauge was faulty and replaced it. 15 S.O.B. -- three (3) crew; 12 passengers.

December 22, 1993

Incident at TORONTO

DH8 ONT364 REPORTED HYDRAULIC PROBLEM AND REQUESTED EMERGENCY EQUIPMENT ON STAND BY FOR UNEVENTFUL LANDING ON RUNWAY 33 AT 0033Z. OPS IMPACT UNKNOWN. TIME = 0023Z. ACTION = PAX PAH.