Accident Dornier 228-201 S9-AUN, Tuesday 18 December 2018
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Date:Tuesday 18 December 2018
Type:Silhouette image of generic D228 model; specific model in this crash may look slightly different    
Dornier 228-201
Owner/operator:Africa's Connection STP
Registration: S9-AUN
MSN: 8076
Year of manufacture:1985
Total airframe hrs:13026 hours
Cycles:14222 flights
Engine model:Garrett TPE331-5-252D
Fatalities:Fatalities: 0 / Occupants: 10
Other fatalities:0
Aircraft damage: Substantial
Location:São Tomé Island Airport (TMS/FPST) -   São Tomé and Príncipe
Phase: Landing
Nature:Passenger - Non-Scheduled/charter/Air Taxi
Departure airport:São Tomé Island Airport (TMS/FPST)
Destination airport:Douala Airport (DLA/FKKD)
Investigating agency: CNIPAIA
Confidence Rating: Accident investigation report completed and information captured
The Dornier 228-201 took off from São Tomé Island Airport at 15:16 hours local time to Douala, Cameroon.
After take off from Sao Tomé the crew noticed that with gear retraction the transition light did not go off and was on throughout the flight. During the approach to Douala and having selected the landing gear down, the crew realized that the nose gear was not down and only the main gear was extended and locked. The crew recycled the landing gear but to no avail. With this abnormal condition the crew decided to return to home base at São Tomé Airport.
At 19:53 a forced nose gear-up landing was performed, resulting in substantial damage to the aircraft's nose area.

Causal Factors:
The investigation determines that the cause of this accident as:
During towing of the aircraft, the pin for towing came out and at time of turning it damaged the nose landing gear torque link affecting the alignment and centering of the nose wheel.
After take off and selecting landing gear up, the nose gear was stuck in the nose compartment due to 15° off deflection from centre point.
Nose wheel could not be extended because it was stuck in the nose compartment.
Contributory Factors:
1 Inadequate tow bar.
2 Inadequate aircraft tow tractor.
3 Aircraft tow tractor was technically faulty.
4 Lack of appropriate training for ground personnel on aircraft towing.
5 Undocumented ground personnel discharging maintenance duties.
6 Roughness and degradation of taxiway surface.
7 No action was taken for specific inspection on the nose landing gear for any damage caused during towing the aircraft.
8 No compliance with Service Bulletin no. SI-228-036 issued by the manufacturer on 28th April 1989.

Accident investigation:
Investigating agency: CNIPAIA
Report number: AC/18/12/2018/RF
Status: Investigation completed
Duration: 1 year and 3 months
Download report: Final report




Revision history:


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