EASA AD 2019-0240
Fuel — Saddle Clamps / Motive-Flow Fuel Pipes — Replacement / Alignment
Summary
EASA Airworthiness Directive 2019-0240 is an airworthiness directive issued by EASA affecting all Pilatus PC-24 aeroplanes. It addresses the replacement and alignment of flexible saddle clamps and motive-flow fuel pipes installed between frame 34 and 36 to prevent potential fuel leaks. The directive mandates the replacement of specific flexible saddle clamps with fixed saddle clamps to ensure continued airworthiness and safety.
What Changed
This new airworthiness directive introduces a mandatory replacement of flexible saddle clamps, part number 946.33.22.004, with fixed saddle clamps, part number 946.33.21.933, on affected PC-24 aircraft. It also requires alignment checks and corrections of the motive-flow fuel pipes after replacement. The directive prohibits the installation or reinstallation of the affected flexible saddle clamps on any PC-24 aeroplane.
Why It Matters
This directive is critical for aviation professionals because failure to comply could result in fuel leaks caused by movement of the aft fuel pipe damaging O-rings. Such leaks may lead to fuel contamination in the rear fuselage, increasing the risk of fire or explosion. Operators, maintenance organizations, and compliance teams must ensure timely replacement and alignment to maintain aircraft safety and regulatory compliance.
What To Do
Operators of Group 1 PC-24 aeroplanes must replace all affected flexible saddle clamps with fixed saddle clamps within three months of 9 October 2019. After replacement, they must check and, if necessary, align the left-hand and right-hand motive-flow fuel pipes before the next flight. Installation of affected flexible saddle clamps is prohibited from the effective date of this directive.
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