AD 2026-02-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | PZL-Swidnik | S.A. | Airworthiness Directives; PZL-Swidnik S.A. Helicopters |
Unsafe Condition
The detection of corrosion on the main rotor blade (MRB) attachment bolts, which could lead to cracks and failure of one or more of the MRB attachment bolts and result in loss of an MRB and consequent loss of control of the helicopter.
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Required Actions
Repetitively inspect the MRB attachment bolts and, depending on the results of the inspection, repair or replace any affected bolts. Report the inspection results to the manufacturer and prohibit installing a P/N 37.21.000.50.00 MRB attachment bolt on any helicopter unless it has been inspected in accordance with the AD requirements.
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Compliance Time
Before further flight
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Affected Aircraft
PZL-Swidnik S.A. Model PZL W-3A helicopters, part number (P/N) 37.21.000.50.00 MRB attachment bolts.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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