You can contribute by submitting additional or updated information.
| Date: | Monday 9 December 2024 |
| Time: | c. 10:55 LT |
| Type: |  Fly Synthesis Storch CL |
| Owner/operator: | Taiwan Aviation Master Activity Association |
| Registration: | JJ2258 |
| MSN: | CAA-113-028 |
| Engine model: | Jabiru 2200A |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Other fatalities: | 0 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | near Saijia Jiehao Ultralightport, Gaoshu, Pingtung -
 Taiwan
|
| Phase: | Initial climb |
| Nature: | Training |
| Departure airport: | Saijia Jiehao Ultralightport |
| Saijia Jiehao Ultralightport | |
| Investigating agency: | TTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
On December 9, 2024, at 1055 Taipei time, a STORCH CL ultralight operated by the Taiwan Aviation Master Activity Association, carrying 1 operator and 1 occupant, experienced engine failure shortly after taking off from Runway 26 at the Pingtung Sai Jia Jaie Haour Ultralight Airfield and crash-landed approximately 340 meters west of the Runway 08 threshold. The ultralight was destroyed, and both occupants were hospitalized for treatment.
The finding related to probable causes is as follows:
1. During the initial climb to approximately 100 feet, the occurrence vehicle experienced an internal engine mechanical failure. The circlip securing the gudgeon pin of cylinder no. 4 detached during engine operation, resulting in abnormal lateral movement of the gudgeon pin. While the engine continued running, the end of gudgeon pin scraped against the inner wall of the cylinder during the piston's reciprocating motion and struck the lower flange structure of the crankcase as the piston approached bottom dead center. As the conrod remained driven by the crankshaft’s rotation, the piston body was torn apart and the conrod became bent and deformed. Eventually, the deformed conrod, during its erratic impacts at the bottom of the cylinder, punctured the upper casing of the crankcase and simultaneously embedding into the rotating crankshaft, which causing the engine to seize immediately.
Accident investigation:
 |
|
Sources:
https://www.ttsb.gov.tw/media/8165/jj2258%E4%BA%8B%E6%95%85%E5%88%9D%E6%AD%A5%E5%A0%B1%E5%91%8A.pdf
https://udn.com/news/story/7320/8413393
https://www.taiwannews.com.tw/news/5987799
https://www.youtube.com/watch?v=87Y2jrKVR80 (video)
https://www.ttsb.gov.tw/english/18609/18610/44578/post
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 09-Dec-2024 09:42 | gerard57 | Added |
| 09-Dec-2024 12:30 | RobertMB | Updated [Time, Aircraft type, Registration, Location, Phase, Departure airport, Destination airport, Source, Damage, Narrative, Plane category, Category, ] |
| 17-Dec-2024 09:48 | ASN | Updated [Operator, Source, ] |
| 02-Sep-2025 21:49 | Justanormalperson | Updated [Aircraft type, Source, Narrative, ] |
| 02-Sep-2025 21:50 | Justanormalperson | Updated [Accident report, ] |
| 22-Oct-2025 13:00 | ASN | Updated [Cn, Narrative, Accident report, ] |
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:
©2025 Flight Safety Foundation