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AD/BN-2/35 Amdt 3 - Airframe Structural Fatigue Life Limitation
Pilatus Britten-Norman BN-2 Series AeropPilatus Britten-Norman BN-2 Series Aeroplanes
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Pilatus Britten-Norman BN-2 Series Aeroplanes
| AD/BN-2/35 Amdt 3 | Airframe Structural Fatigue Life Limitation | 16/2010 |
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| Applicability: | All BN-2 piston engine models. |
|---|---|
| Requirement: | Retire from service the wing and wing attachment fuselage frames. |
| Compliance: | Before 30,000 hours total time in service (for BN-2A model with 49 foot wingspan).Before 28,000 hours total time in service (for BN-2B model). |
| This Amendment becomes effective on 9 August 2010. | |
| Background: | This amendment increases the retirement life from 28,000 hours to 30,000 hours based on advice from the manufacturer for the BN-2A model only. Recent fatigue data analysis indicates the fatigue life can be safely increased to 30,000 hours for the BN-2A model with 49 foot wingspan, pending further review by the manufacturer.Finalised fatigue lives for the BN-2A and BN-2B models will be provided once Pilatus-Britten Norman have completed their review of fatigue for these variants.The fatigue life for the BN-2T is contained in the maintenance manual, section 4.3 “Wing Structure Safe Life” and is based on utilisation rate. |
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Mike Higgins
Delegate of the Civil Aviation Safety Authority
5 August 2010