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AD/DO 328/59 - Hydraulic Pressure Dump and Relief Valve
Dornier 328 Series AeroplanesDornier 328 Series Aeroplanes
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Dornier 328 Series Aeroplanes
| AD/DO 328/59 | Hydraulic Pressure Dump and Relief Valve | 6/2006 |
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| Applicability: | Dornier 328-100 aeroplanes Serial Numbers 3005 through 3095 inclusive. |
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| Requirement: | Unless previously accomplished replace the pressure dump and relief valve Part Number (P/N) ZHV29-1 with valve P/N ZHV29-2.Note 1: LBA AD 97-072 dated 27 March 1997refers.Note 2: Dornier 328 Service Bulletin No. 328-29-205 pertains to this subject. |
| Compliance: | Within 30 days after the effective date of this AD. |
| This Airworthiness Directive becomes effective on 8 June 2006. | |
| Background: | The pressure dump and relief valve may have a thin section in the housing and may have been overtorqued during manufacture. This may lead to hydraulic leakage from the valve and loss of the hydraulic system from the aeroplane. |
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James Coyne
Delegate of the Civil Aviation Safety Authority
28 April 2006