Navigation — Weather Radar System Redundant Wiring — Modification
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of affected Pilatus PC-24 aeroplanes must modify the weather radar redundant wiring within 9 months from the effective date of 28 December 2022. This involves following the instructions in Pilatus PC-24 Service Bulletin 34-010 Revision 1 to disconnect, cap, and stow the redundant wires. Aircraft previously modified per the original service bulletin must also complete additional work specified in the revised service bulletin within the same timeframe.
Summary
EASA Airworthiness Directive 2022-0249 is an airworthiness directive issued by the European Union Aviation Safety Agency affecting Pilatus PC-24 aeroplanes with manufacturer serial numbers 231 to 252 inclusive, as well as MSN 254 and 255. The directive addresses a wiring issue in the weather radar system that could impact critical avionics components during a lightning strike. It mandates a modification to the redundant wiring of the weather radar system to ensure continued safe operation.
What changed
EASA Airworthiness Directive 2022-0249 introduces a mandatory modification to the weather radar system's redundant wiring on affected Pilatus PC-24 aircraft. This modification involves disconnecting, capping, and stowing redundant wires installed outside the braided shielding sleeve, as detailed in Pilatus PC-24 Service Bulletin 34-010 Revision 1. The directive also requires additional work for aircraft previously modified under the original service bulletin.
Why it matters
This directive is critical for aviation professionals because the incorrect wiring arrangement could lead to partial loss of flight and navigation data during lightning strikes, increasing pilot workload and reducing safety margins. Operators and maintenance organizations must comply to maintain aircraft airworthiness and ensure the reliability of key avionics systems. Compliance helps prevent potential safety risks associated with avionics failures in flight.
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