ASN Wikibase Occurrence # 218090
This information is added by users of ASN. Neither ASN nor the Flight Safety Foundation are responsible for the completeness or correctness of this information.
If you feel this information is incomplete or incorrect, you can submit corrected information.
| Date: | Saturday 5 December 1987 |
| Time: | 11:54 |
| Type: | Fairey AS-6 Firefly |
| Owner/operator: | |
| Registration: | VH-WMW |
| MSN: | WD-828 |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Location: | 1km N of Camden, NSW -
 Australia
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Test |
| Departure airport: | YSCN |
| YSCN | |
| Investigating agency: | BASI |
| Confidence Rating: |  Accident investigation report completed and information captured |
The aircraft had been out of service for several months, undergoing engine maintenance. This was the first flight following the completion of that maintenance. After takeoff the aircraft was observed to climb normally to about 1500 feet. It was then observed to begin trailing black smoke and shortly afterwards turned towards the airfield and began to lose height rapidly, until descending out of view behind trees. The aircraft touched down heavily, tail first, in a paddock, bounced and following the second touch down slewed sideways through a fence and down an embankment. An inspection of the engine revealed that both the right and left camshaft inclined drive upper bevel shaft gears had been overheated as a result of a lack of lubrication. The distortion of the left drive was sufficient to disconnect it from its camshaft drive bevel gear resulting in the subsequent loss of power. The engine was fitted with an external oil priming system to lubricate the camshaft drives during and immediately after starting. This system was connected on each side into the appropriate valve train oil supply by "T" fittings and flexible hose assemblies. During reassembly, associated with the latest engine maintenance, the "T" fittings were omitted and the fittings in the front case drillways were blanked with plugs, effectively cutting off the engine oil supply to the camshaft drives. It was evident that the maintenance personnel involved were unaware of the camshaft lubrication system.
Accident investigation:
 |
|
Sources:
https://www.atsb.gov.au/publications/investigation_reports/1987/aair/aair198702444/
https://www.atsb.gov.au/media/26823/aair198702444.pdf
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 19-Nov-2018 08:45 | Pineapple | Added |
Corrections or additions? ... Edit this accident description
The Aviation Safety Network is an exclusive service provided by:
Quick Links:
| ASN Home | Send Correction / Feedback |
| FSF Home | Disclaimer | Copyright |
| Contact Us | Privacy Policy |
| Press / Media |
CONNECT WITH US:
©2024 Flight Safety Foundation