EASA AD 2018-0242
Fuel — Fuel Tank Electrical Harness — Inspection / Replacement
Summary
EASA Airworthiness Directive 2018-0242 is an official regulatory document addressing the inspection and replacement of fuel tank electrical harnesses on PZL M28 05 aeroplanes, specifically serial numbers AJE003-01 through AJE003-47 except AJE00344. The directive targets potential defects in thermo-shrinkable tubes installed on electrical harnesses within the fuel tanks that could impair fuel flow and engine performance. It mandates inspection and, if necessary, replacement of affected parts to ensure continued airworthiness.
What Changed
This new Airworthiness Directive introduces a one-time inspection requirement for the electrical harnesses in the centre and outer wing fuel tanks of affected PZL M28 05 aeroplanes. It also requires replacement of any damaged harnesses found during inspection with serviceable parts. The directive allows installation of only serviceable affected parts from its effective date onward.
Why It Matters
This directive is critical for aviation professionals because degraded thermo-shrinkable tubes in fuel tank harnesses can block fuel flow, reducing engine power and aircraft performance. Operators and maintenance teams must comply to prevent fuel supply issues and ensure safe operation. Compliance ensures regulatory adherence and avoids potential in-flight fuel system malfunctions.
What To Do
Operators of affected PZL M28 05 aeroplanes must inspect the electrical harnesses in the centre and outer wing fuel tanks within 200 flight hours, 400 flight cycles, or 8 months from 22 November 2018, whichever occurs first. If any damage is found, the affected harness must be replaced with a new serviceable part before the next flight. Only serviceable affected parts may be installed after the effective date.
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