Airworthiness Directive · Amendment 39-23179 · Rudder control system
Polskie Zakłady Lotnicze Sp. z o.o. Airplanes
This AD applies to all Polskie Zakłady Lotnicze Sp. z o.o. Model PZL M28 05 airplanes, certificated in any category.
The FAA is adopting a new airworthiness directive (AD) for all Polskie Zak[lstrok]ady Lotnicze Sp. z o.o. Model PZL M28 05 airplanes. The FAA previously sent this AD as an emergency AD to all known U.S. owners and operators of these airplanes. This AD was prompted by damage found in Frame No. 29 and rudder control unit mounting components on Frame No. 29. This AD requires a one-time inspection of the rudder control system mounting bracket attachment components to Frame No. 29 for loose or damaged bolts and the components of Frame No. 29 for cracks and damage, and corrective actions if necessary. The FAA is issuing this AD to address the unsafe condition on these products.
For the purpose of this AD, the following definitions apply:
(1) Affected parts: Frame No. 29 and rudder flight control unit mounting components on Frame No. 29.
(2) The Service Bulletin (SB): Polskie Zakłady Lotnicze Sp. z o.o. Service Bulletin No. E/12.152/2025, dated October 9, 2025.
(1) Before further flight after the effective date of this AD, inspect each affected part for looseness or damage (e.g., cracks, corrosion, or deformation) in accordance with paragraphs (2) and (3) of Section III of the SB specified in paragraph (g)(2) of this AD. For this inspection, thoroughly clean the area and use a 10x magnification with a high-powered light.
(2) If any looseness or damage is found in the bolts, nuts, or components during the inspection required by paragraph (h)(1) of this AD, before further flight, replace or correct the affected parts in accordance with paragraph (2) of Section III of the SB specified in paragraph (g)(2) of this AD.
(3) If any damage is found during the inspection required by paragraph (h)(1) of this AD, do the following:
(i) If damage is found on the bolts and nuts only, within 10 days after the inspection or 10 days after the effective date of this AD, whichever occurs later, report the damage to Polskie Zakłady Lotnicze Sp. z o.o. and perform a cable tension and rudder rigging inspection.
(ii) If damage is found beyond bolts and nuts as specified in paragraph (4) of Section III of the SB specified in paragraph (g)(2) of this AD, before further flight, repair using a method approved by the Manager, International Validation Branch, FAA; European Union Aviation Safety Agency (EASA); or Polskie Zakłady Lotnicze Sp. z o.o.'s EASA Design Organization Approval (DOA); and perform a cable tension and rudder rigging inspection. If approved by the DOA, the approval must include the DOA-authorized signature.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
Aircraft
