Montreal - Ottawa

A BAe-748 cargo plane was destroyed when it crashed while on approach to Ottawa International Airport, ON (YOW), Canada. Both pilots were killed. The airplane had arrived at Montreal-Dorval International Airport, QC (YUL) following a cargo flight from Dayton, OH, USA. All the cargo was unloaded in Montreal and the aircraft departed at 09:58 for Ottawa on an instrument flight rules (IFR) flight plan. The en route phase of the flight were uneventful. At about 10:19, while the aircraft was in level cruise flight at 3000 feet at approximately 200 knots indicated airspeed (KIAS), the flight data recorder (FDR) recorded a full-up deflection of the left aileron and a full-down deflection of the right aileron, and the aircraft began a roll to the left at a high rate. The right aileron remained at the fully-deflected position for a period of three seconds, and then, over the next seven seconds, the deflection gradually decreased by about five degrees. During the same 10-second period, the left aileron remained nearly fully deflected for the first eight seconds, then the deflection decreased by about five degrees during the next two seconds. By this time, the aircraft had rolled through approximately 460 degrees, and the aircraft nose had dropped 20 to 30 degrees below the horizon. At this point, the ailerons suddenly returned to about the neutral position and remained there for the last three seconds of the flight. The aircraft bank angle remained at approximately 90 degrees of left bank with a maximum vertical g of 4.7 recorded. The aircraft struck the ground at an airspeed of approximately 290 KIAS after a heading change of about 75 degrees left of the cruise heading. At impact, the aircraft bank angle was nearly 90 degrees left and the pitch angle was 41 degrees down. The time from the initial aileron deflection to ground impact was approximately 18 seconds.

Flight / Schedule

Montreal - Ottawa

Aircraft

Avro 748

Registration

C-GFFA

MSN

1789

Year of Manufacture

1981

Date

September 15, 1988 at 10:19 AM

Type

CRASH

Flight Type

Positioning

Flight Phase

Landing (descent or approach)

Crash Site

Plain, Valley

Crash Location

Cheney Ontario

Region

North America • Canada

Coordinates

45.4112°, -75.2424°

Crash Cause

Human factor

Narrative Report

On September 15, 1988 at 10:19 AM, Montreal - Ottawa experienced a crash involving Avro 748, operated by Bradley Air Services, with the event recorded near Cheney Ontario.

The flight was categorized as positioning and the reported phase was landing (descent or approach) at a plain, valley crash site.

2 people were known to be on board, 2 fatalities were recorded, 0 survivors were identified or estimated. This corresponds to an estimated fatality rate of 100.0%.

Crew on board: 2, crew fatalities: 2, passengers on board: 0, passenger fatalities: 0, other fatalities: 0.

The listed crash cause is human factor. A BAe-748 cargo plane was destroyed when it crashed while on approach to Ottawa International Airport, ON (YOW), Canada. Both pilots were killed. The airplane had arrived at Montreal-Dorval International Airport, QC (YUL) following a cargo flight from Dayton, OH, USA. All the cargo was unloaded in Montreal and the aircraft departed at 09:58 for Ottawa on an instrument flight rules (IFR) flight plan. The en route phase of the flight were uneventful. At about 10:19, while the aircraft was in level cruise flight at 3000 feet at approximately 200 knots indicated airspeed (KIAS), the flight data recorder (FDR) recorded a full-up deflection of the left aileron and a full-down deflection of the right aileron, and the aircraft began a roll to the left at a high rate. The right aileron remained at the fully-deflected position for a period of three seconds, and then, over the next seven seconds, the deflection gradually decreased by about five degrees. During the same 10-second period, the left aileron remained nearly fully deflected for the first eight seconds, then the deflection decreased by about five degrees during the next two seconds. By this time, the aircraft had rolled through approximately 460 degrees, and the aircraft nose had dropped 20 to 30 degrees below the horizon. At this point, the ailerons suddenly returned to about the neutral position and remained there for the last three seconds of the flight. The aircraft bank angle remained at approximately 90 degrees of left bank with a maximum vertical g of 4.7 recorded. The aircraft struck the ground at an airspeed of approximately 290 KIAS after a heading change of about 75 degrees left of the cruise heading. At impact, the aircraft bank angle was nearly 90 degrees left and the pitch angle was 41 degrees down. The time from the initial aileron deflection to ground impact was approximately 18 seconds.

Aircraft reference details include registration C-GFFA, MSN 1789, year of manufacture 1981.

Geospatial coordinates for this crash are approximately 45.4112°, -75.2424°.

Fatalities

Total

2

Crew

2

Passengers

0

Other

0

Crash Summary

A BAe-748 cargo plane was destroyed when it crashed while on approach to Ottawa International Airport, ON (YOW), Canada. Both pilots were killed. The airplane had arrived at Montreal-Dorval International Airport, QC (YUL) following a cargo flight from Dayton, OH, USA. All the cargo was unloaded in Montreal and the aircraft departed at 09:58 for Ottawa on an instrument flight rules (IFR) flight plan. The en route phase of the flight were uneventful. At about 10:19, while the aircraft was in level cruise flight at 3000 feet at approximately 200 knots indicated airspeed (KIAS), the flight data recorder (FDR) recorded a full-up deflection of the left aileron and a full-down deflection of the right aileron, and the aircraft began a roll to the left at a high rate. The right aileron remained at the fully-deflected position for a period of three seconds, and then, over the next seven seconds, the deflection gradually decreased by about five degrees. During the same 10-second period, the left aileron remained nearly fully deflected for the first eight seconds, then the deflection decreased by about five degrees during the next two seconds. By this time, the aircraft had rolled through approximately 460 degrees, and the aircraft nose had dropped 20 to 30 degrees below the horizon. At this point, the ailerons suddenly returned to about the neutral position and remained there for the last three seconds of the flight. The aircraft bank angle remained at approximately 90 degrees of left bank with a maximum vertical g of 4.7 recorded. The aircraft struck the ground at an airspeed of approximately 290 KIAS after a heading change of about 75 degrees left of the cruise heading. At impact, the aircraft bank angle was nearly 90 degrees left and the pitch angle was 41 degrees down. The time from the initial aileron deflection to ground impact was approximately 18 seconds.

Cause: Human factor

Occupants & Outcome

Crew On Board

2

Passengers On Board

0

Estimated Survivors

0

Fatality Rate

100.0%

Known people on board: 2

Operational Details

Schedule / Flight

Montreal - Ottawa

Flight Type

Positioning

Flight Phase

Landing (descent or approach)

Crash Site

Plain, Valley

Region / Country

North America • Canada

Aircraft Details

Aircraft

Avro 748

Registration

C-GFFA

MSN

1789

Year of Manufacture

1981