ASN Wikibase Occurrence # 272679
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: | Friday 1 June 2007 |
| Time: | |
| Type: |  Piper PA-30-160 Twin Comanche |
| Owner/operator: | |
| Registration: | ZS-JCJ |
| MSN: | 30-346 |
| Fatalities: | Fatalities: / Occupants: |
| Aircraft damage: | |
| Category: | Accident |
| Location: | Runway 06 at Wonderboom Aerodrome -
 South Africa
|
| Phase: | |
| Nature: | |
| Departure airport: | Wonderboom Aerodrome (FAWB) |
| Wonderboom Aerodrome (FAWB) | |
| Investigating agency: | CAA S.A. |
| Confidence Rating: |  Accident investigation report completed and information captured |
The flight instructor and a student were busy with a conversion training flight onto the Piper PA30 aircraft type. The student stated that several touch-and-go landings carried out during the first flight of the day where uneventful. After they had lunch, they departed on the second flight of the day. On the first touch-and-go landing, the student flared the aircraft too high above the runway and a hard landing followed. The flight instructor then took over control of the aircraft in order to demonstrate to the student what was required from him. The flight instructor attempted to retract the undercarriage, but the gear up light failed to illuminate. The flight instructor requested a flyby in front of the tower, and the air traffic controller confirmed that the undercarriage appeared up. However, as soon as the flight instructor attempted to select gear down, the undercarriage failed to lock down. The flight instructor then utilised the emergency system to lower the undercarriage, whereafter he performed another flyby. The air traffic controller confirmed that the gear appeared to be down. The aircraft was landed without any further incident and was taxied to the aircraft maintenance organisation's hanger. Following an inspection of the undercarriage, the right-hand trunion assembly was found to be cracked. During the investigation process, a discrepancy was noticed in the statements between the aircraft maintenance organisation (AMO) and the pilot under training with regard to the cause of the cracked trunion. The right-hand trunion was sent for metallurgical analysis to determine the failure mode. The metallurgical report concluded that the trunion failed most probably due to a single induced overload force during operation of the aircraft and no clear indications of pre-failure crack formation were detected. The fact that the metallurgical report concluded that the failure was due to a single overload condition is in line with the evidence of a hard landing, which was initially reported by the flight crew. The flying school held a valid Aviation Training Organisation and Approval Certificate, no. CAA/0274, which was issued on 06 December 2006 with an expiry date of 06 December 2007. According to available records, the aircraft maintenance organisation (AMO) that certified the last mandatory periodic inspection (MPI) on the aircraft prior to the accident was in possession of a valid AMO Approval, no. 278, with an expiry date of 31 October 2007. The SACAA conducted an audit on the AMO on 05 September 2006. Probable Cause The right-hand trunion assembly failed due to overload following a hard landing.
Accident investigation:
 |
|
Sources:
S.A. CAA
History of this aircraft
Other occurrences involving this aircraft
| 29 September 2001 | ZS-JCJ | 0 | RWY 19 FACT | |
||
| 2 May 2009 | ZS-JCJ | Sunglide 139 CC | 0 | Runway 29, Wonderboom Airport, Gauteng | |
sub |
| Heavy landing | ||||||
Revision history:
| Date/time | Contributor | Updates |
|---|
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