August 13, 2007

Incident at 50NM south-southwest of Wiarton (TCAS alert, Navigation error, Controlled airspace - unauthorized entry, Conflict - potential, Conflict - loss of separation)

UPDATE Supplemental information received from T.S.B. Initial Notification (#A07O0226): The Northwest Airlines Airbus A-330-323 aircraft, operating as NWA67, was on a southwest track and cleared to descend to FL330 and to expect further descent clearance to FL300 at the AXXIS intersection. The Air Canada Boeing B-767-3Y0 aircraft, operating as flight ACA1171, was on a northwest track at FL320. NWA67 descended below FL330 which resulted in a loss of separation with ACA1171. ATC intervened and both flight crews responded to TCAS/RA warnings. The required separation between aircraft at this flight level is five (5) miles laterally and 1,000 feet vertically but the actual distance between the two aircraft was not determined.
The Northwest Airlines, Inc. Airbus A-330-300 series aircraft (operating as NWA67) was on a scheduled IFR flight from Amsterdam (Schiphol) International Airport, Netherlands (EHAM) to Detroit Metropolitan (Wayne County) International Airport, MI (U.S.A.) (KDTW). The Air Canada Boeing B-767-300 series aircraft (operating as ACA1171) was on a scheduled IFR flight from Toronto (LBPIA) (CYYZ) to Vancouver International Airport (CYVR). NWA67 was on a southwest track when it descended below its cleared altitude of FL330. This brought the aircraft into confliction with ACA1171, northwest-bound, level at FL320. Controller intervention and TCAS RA responses avoided a close encounter but the aircraft passed with less than the required separation.

December 22, 2005

Incident at 50NM au nord du VORTAC de Québec (YQB)

NWA67, an Airbus 330 operated by Northwest Orient Airlines, was conducting an instrument flight rules (IFR) flight between Amsterdam (EHAM) and Detroit (KDTW). Due to the weather conditions that prevailed at Detroit at 1708Z (winds from the southwest at 17 kt, visibility 3 SM in fog, covered ceiling at 900 ft), the crew requested a diversion to Boston (KBOS). There was no impact on ATC operations.

January 16, 2005

Incident at Aux coordonnées 5909N 6952W

Northwest Airlines Airbus 330 NWA67 declared a medical emergency at 5909N 6952W, and was given priority.

April 21, 2005

Incident at 20NM southwest of Wiarton VOR (ELT)

NAV CANADA staff at Toronto ACC were advised by the flight crew of NWA67, en-route from Amsterdam (Schiphol) International Airport, Netherlands (EHAM) to Detroit Metropolitan (Wayne County) International Airport, MI (U.S.A.) (KDTW) at FL300, about 20NM southwest of the Wiarton VOR (YVV) that they heard a weak ELT that lasted for two (2) minutes. J.R.C.C. Trenton staff advised.

January 16, 2005

Incident at GOOSE BAY NL (CYYR)

Pilot advised ATC of passenger with possible heart attack (doctor on board) and requested to divert to CYYR. Aircraft was cleared as requested and landed CYYR at 1708z without further incident. Nil TSB.

September 17, 2004

Incident at Intersection ROBDO (Conflict - loss of separation, ATS operating irregularity)

There was a loss of separation between NWA67, a Northwest Airlines Airbus 330, and UAL929, a United Airlines Boeing 777, when NWA67 was authorized to climb from FL 350 to FL 370 while UAL929 was at FL 360 with less than the required longitudinal separation. The separation was based on 10 minutes between the two aircraft at the same point, while the aircraft had 16 minutes on a converging path, but not at the same point.
Update #1: The TSB investigation class and number were added. The TSB reports that the Airbus 330-300 operated by Northwest Airlines and the Boeing 777-200 operated by United Airlines were both bound for Detroit, inbound from Europe. The two aircraft were on converging paths at the RODBO intersection in MNPS/RNPC transition airspace. The Airbus 330 was authorized to climb from FL 350 to FL 370, while the Boeing 777 was at FL 360. There was a loss of separation when the Airbus climbed through FL 360, since the aircraft were 10 minutes apart, while the standard was 15 minutes for converging paths at the same altitude.

December 27, 2003


A 1610Z, en provenance de Schiphol (EHAM), à destination de Détroit (KDTW), le vol NWA67 se trouvait au niveau de vol FL390 à 150MN au Nord de Bagoteville (CYBG) quand l`équipage a informé qu`ils feraient le point sur une situation se déroulant à l`arrière. Quelques minutes plus tard NWA67 informait que l`identité d`un passager à l`air suspect venait d`être vérifiée et que tout était normal. Le vol a poursuivi sa route à destination. At 1610Z, en route from Schiphol (EHAM) to Detroit (KDTW), flight NWA67 was flying at FL390 150NM north of Bagotville (CYBG) when the crew indicated that it would report back regarding a situation that was taking place in the rear. A few minutes later, NWA67 indicated that the identity of a suspicious passenger had just been checked and that everything was normal. The flight continued its route to its destination.

December 31, 2002

Incident at GOOSE BAY NL (CYYR)

A Boeing 747 was enroute from Schipol to Detroit when it declared an Medical Emegency due to a passenger. The aircraft requested and was cleared to divert to Goose Bay. The aircraft landed without further incident at 1547Z. TSB - NIL

October 26, 2001

Incident at Intersection Lakes (58N6316W)

The pilot of NWA67, a B747 operated by Northwest Airlines, requested priority to use a more direct route because of an ailing person on board. The request was granted (DRCT YYB DRCT POLAR KDTW). Le pilote de NWA67, un B747 exploité par la compagnie Northwest Airlines a demandé une priorité pour utiliser une route plus directe, à cause d'une personne malade à bord. La demande a été accordée (DRCT YYB DRCT POLAR KDTW).

March 29, 2001

Incident at 56N 60W

NWA67, a Northwest Airlines B744, was making an IFR flight between Schiphol (EHAM) and Detroit (KDTW). In the vicinity of 56N 60W, the pilot requested to be re-routed to Goose Bay (CYYR) because of a medical emergency on board. NWA67, un B744 de la compagnie Northwest Airlines, effectuait un vol selon les règles de vol aux instruments (IFR) entre Schiphol (EHAM) et Detroit (KDTW). Aux environs de 56N 60W, le pilote a demandé à être réacheminé vers Goose Bay (CYYR) à cause d'une urgence médicale à bord.

November 27, 2001

Incident at Approx. 40 nm southeast of North Bay, Ontario (CYYB)

The aircraft, operating as Northwest Airlines flight 67 (Amsterdam to Detroit), reported a medical emergency on board and requested direct to Detroit (DTW). NWA67 was given direct routing, entering Cleveland airspace southwest of Sarnia at 15000 feet above sea level (ASL) at 1818Z. Minimal operational impact.

February 3, 1999

Incident at Près de l'intersection LABRE (46 45.1N 69 56.2W)

While in cruising flight near the LABRE intersection (46 45.1N / 69 56.2W) en route from Amsterdam/Schiphol, Holland, (EHAM) to Detroit/Wayne, MI, USA, (KDTW) the crew of NWA67 (B747-400) increased its known and expected speed from Mach 0.85 to Mach 0.87 without advising and receiving clearance from ATS. The safety of flights (separated in nautical miles) could have been jeopardized by this manoeuvre. En vol de croisière, près de l'intersection LABRE (46 45.1N / 69 56.2W), en provenance d'Amsterdam/Schiphol, Hollande (EHAM) vers Detroit/Wayne, MI, (USA) (KDTW), l'équipage de NWA67 (B747-400), a augmenté sa vitesse connue et attendue de Mach 0.85 pour Mach 0.87, et ce sans en informer et recevoir l'autorisation des Services de la circulation aérienne. La sécurité des vols (espacés en milles nautiques) aurait pu être compromise par cette manoeuvre.

July 4, 1999

Incident at Gander Oceanic

NWA67 B747 enroute Amsterdam to Detroit request divert to Goose Bay due to one unscreened suitcase. Flight landed Goose Bay 1417z. Nil TSB

February 19, 1999

Incident at Gander Oceanic

NWA67 B747 request divert to Goose Bay due Passenger Medical emergency. Nil impact on traffic. Nil TSB

February 17, 1997

Incident at 62N 50W

Flight was Amsterdam to Detroit at FL350. After passing 62N 50W the flight experienced a medical emergency. A 43 year old female was having severe abdominal pain. There was a doctor on board. Carried out an emergency descent to FL260. There were multiple flights at all altitudes. The contingency procedure was followed. After reaching FL260, aircraft was cleared direct to Goose Bay.

August 3, 1995

Incident at London, Ontario - 80 nm east

NWA67 was 80 nm east of London at FL310, turned south to avoid weather (with controller permission) and conflicted with UAL717 at FL310 westbound. Ops. Impact -- none.