Narrative:
A de Havilland Canada DHC-8-301 passenger plane, operating as Bahamasair flight UP-353, sustained substantial damage in a landing accident at Governor's Harbour Airport (GHB), Bahamas. There were no injuries among the 51 occupants.
The airplane landed on runway 15 at Governor's Harbour following a flight from Nassau. On touchdown the left hand main landing gear separated. The airplane skidded and came to rest on the runway.
Probable Cause:
Probable Cause has been determined as an over-center Torque Link condition that culminated in a single cycle failure of the cylinder. The over center torque links condition occur as a result of the over extension of the shock strut.
Possible Contributory factors to the over extension of the shock strut includes:
Possible Cause for Loss of Damping
- The failure to install the dampening ring when the landing gear was assembled.
- Improper servicing of the landing gear shock strut with Mil-H-5606 hydraulic fluid plus nitrogen during initial assembly.
- Improper servicing of landing gear shock strut during line maintenance and inadequate post servicing follow up per AMM Chapter 12. See attached report Appendix A-30 From Bombardier
- Under-serviced shock strut (low oil volume)
- A broken damper ring
- No damper ring
- Disengaged damper ring
Runway mishap
accident date: 20-04-2007
type: de Havilland Canada DHC-8-301
registration: C6-BFN
| Status: | Accident investigation report completed and information captured |
| Date: | Friday 20 April 2007 |
| Time: | 17:08 |
| Type: |  de Havilland Canada DHC-8-301 |
| Operator: | Bahamasair |
| Registration: | C6-BFN |
| MSN: | 159 |
| First flight: | 1989 |
| Total airframe hrs: | 29570 |
| Cycles: | 52653 |
| Engines: | 2 Pratt & Whitney Canada PW123 |
| Crew: | Fatalities: 0 / Occupants: 3 |
| Passengers: | Fatalities: 0 / Occupants: 48 |
| Total: | Fatalities: 0 / Occupants: 51 |
| Aircraft damage: | Substantial |
| Aircraft fate: | Written off (damaged beyond repair) |
| Location: | Governor's Harbour Airport (GHB) ( Bahamas)
|
| Phase: | Landing (LDG) |
| Nature: | Domestic Scheduled Passenger |
| Departure airport: | Nassau-Lynden Pindling International Airport (NAS/MYNN), Bahamas |
| Governor's Harbour Airport (GHB/MYEM), Bahamas | |
| Flightnumber: | 353 |
A de Havilland Canada DHC-8-301 passenger plane, operating as Bahamasair flight UP-353, sustained substantial damage in a landing accident at Governor's Harbour Airport (GHB), Bahamas. There were no injuries among the 51 occupants.
The airplane landed on runway 15 at Governor's Harbour following a flight from Nassau. On touchdown the left hand main landing gear separated. The airplane skidded and came to rest on the runway.
Probable Cause:
Probable Cause:
Probable Cause has been determined as an over-center Torque Link condition that culminated in a single cycle failure of the cylinder. The over center torque links condition occur as a result of the over extension of the shock strut.
Possible Contributory factors to the over extension of the shock strut includes:
Possible Cause for Loss of Damping
- The failure to install the dampening ring when the landing gear was assembled.
- Improper servicing of the landing gear shock strut with Mil-H-5606 hydraulic fluid plus nitrogen during initial assembly.
- Improper servicing of landing gear shock strut during line maintenance and inadequate post servicing follow up per AMM Chapter 12. See attached report Appendix A-30 From Bombardier
- Under-serviced shock strut (low oil volume)
- A broken damper ring
- No damper ring
- Disengaged damper ring
Accident investigation:
 |
|
Classification:
Landing gear collapseRunway mishap
Sources:
» Probe Continues Into Crash Landing In Eleuthera (The Bahama Journal, 10-5-2007)Photos
accident date: 20-04-2007
type: de Havilland Canada DHC-8-301
registration: C6-BFN
Map
This map shows the airport of departure and the intended destination of the flight. The line between the airports does not display the exact flight path.
Distance from Nassau-Lynden Pindling International Airport to Governor's Harbour Airport as the crow flies is 117 km (73 miles).
Accident location: Exact; deduced from official accident report.
Distance from Nassau-Lynden Pindling International Airport to Governor's Harbour Airport as the crow flies is 117 km (73 miles).
Accident location: Exact; deduced from official accident report.
This information is not presented as the Flight Safety Foundation or the Aviation Safety Network’s opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.
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