Aircraft Accident Investigation Report No. ACCID01/06
Aircraft Accident Investigation Report No. ACCID01/06
Aircraft Accident Investigation Report No. ACCID01/06
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CityU Professional Services Ltd<br />
Failure Analysis of a Towbar<br />
Department of Physics & Materials Science<br />
City University of Hong Kong<br />
7. Analysis<br />
According to the information given to the investigator, the pushback was carried out as normal<br />
for about 5 m, then suddenly the towbar head broke. The above examinations have indicated<br />
how the parts in the towbar head assembly were related to each other during the incident. Figure<br />
7-1 is a mock-up of the final positions of the relevant parts when the towbar came to a rest.<br />
Then, by further relating the head assembly with the main remaining parts of the towbar, the<br />
towbar position in relation to the undercarriage can be determined, and is shown in Figure 7-2.<br />
Figure 7-1 : Final resting position of towbar head assembly<br />
Figure 7-2 : Final resting position of towbar<br />
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