Airworthiness directives › 2025-21-51
AD 2025-21-51 Airworthiness Directives; Polskie Zakłady Lotnicze Sp. z o.o. Airplanes
Models named: PZL M28 05. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to all Polskie Zakłady Lotnicze Sp. z o.o. Model PZL M28 05 airplanes, certificated in any category.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
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.
Unsafe condition
This AD was prompted by a report of cracked bolts that attach the rudder control unit mounting bracket to Frame No. 29, which resulted in the loss of two out of the four bolts on a structural component in the rudder flight control system. The FAA is issuing this AD to detect and correct damaged bolts/nuts and structure that attach the rudder control unit mounting bracket to Frame No. 29. This condition, if not addressed, could result in loss of the bolts that attach structural components to the rudder flight control system, and consequent loss of rudder control and reduced control of the airplane.
Affected ADs
None.
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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1