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ASN Wikibase Occurrence # 203895
Last updated: 13 August 2020
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:06-JAN-2018
Time:c. 15:30
Type:experimental ultralight
Owner/operator:Private
Registration: unreg.
C/n / msn:
Fatalities:Fatalities: 0 / Occupants: 2
Other fatalities:0
Aircraft damage: Written off (damaged beyond repair)
Category:Accident
Location:sea off Taitung -   Taiwan
Phase: En route
Nature:Private
Departure airport:
Destination airport:
Investigating agency: ASC
Narrative:
A home designed and built ultralight vehicle, with no inspection certificate, and no registration number, was forced to land at about 15:30 hours on the beach near 104.7 km of the 11th Provincial Highway of Chenggong Township, Taitung County. The vehicle was completely destroyed, and two occupants were not injured.

ASC Conclusion: "The two operators in the occurrence were all members of legal ultra-light vehicle activity association and held valid operation certificates issued by the Civil Aeronautics Administration, Ministry of Transportation and Communications (CAA).
However, the vehicle was designed and built by an individual and did not hold a valid inspection certificate issued by the CAA. Furthermore, the vehicle did not take off from a legal site. As a result, the operation was an illegal ultra-light vehicle activity.
The contributing factors preclude weather, fuselage structure and flight control system related factors. The occurrence vehicle experienced engine rotational speed decrease and subsequent decrease of output horsepower during cruise, which resulted in the flight altitude of vehicle could not be maintained, therefore, the operators executed an emergency landing, causing the vehicle destroyed. The two operators were no injuries. Due to severe damage to the engine, relevant functional tests could not be performed. Therefore, exact causes of insufficient engine horsepower could not be determined."

Sources:

https://www.taiwannews.com.tw/en/news/3335485
https://www.asc.gov.tw/main_en/docDetail.aspx?uid=318&pid=318&docid=915

Accident investigation:
cover
  
Investigating agency: ASC
Status: Investigation completed
Duration: 8 months
Download report: Final report
Safety recommendations:

Safety recommendation ASC-ASR-18-09-001 issued by ASC to CAA Taiwan
Safety recommendation ASC-ASR-18-09-002 issued by ASC to Hualien Ultra-light Vehicle Activity Association


Revision history:

Date/timeContributorUpdates
06-Jan-2018 09:52 gerard57 Added
08-Jan-2018 17:27 harro Updated [Time, Source]
21-Sep-2018 09:51 harro Updated [Aircraft type, Registration, Source, Narrative, Accident report, ]

Corrections or additions? ... Edit this accident description