Tail Rotor — Rotor Blade Bearing(s) — Inspection
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators must inspect the tail rotor blade tips for displacement before the next flight after 11 March 2019. If displacement is 2 mm or more but less than 7 mm, affected parts must be removed and further inspected. If displacement is 7 mm or more, the tail rotor assembly must be replaced before flight. Only serviceable parts, as defined by the directive, may be installed from the effective date onward.
Summary
EASA Airworthiness Directive 2019-0045-E is an emergency directive addressing the inspection of tail rotor blade bearings on all serial numbers of PZL SW-4 helicopters. It focuses on detecting displacement and missing inserts in the tail rotor blade bearings, specifically part numbers 60.02.680.00.01 and 60.02.630.00.00. The directive mandates inspections to ensure the integrity of these components to prevent potential failure and loss of helicopter control.
What changed
This new emergency airworthiness directive introduces a one-time inspection requirement for the tail rotor blade bearings on PZL SW-4 helicopters. It requires measuring displacement of the tail rotor blade tips and inspecting for missing inserts in the bearings. Depending on inspection results, corrective actions such as part removal, follow-on inspections, or tail rotor assembly replacement must be performed.
Why it matters
This directive is critical for aviation professionals because undetected excessive displacement or missing inserts in tail rotor blade bearings can lead to increased loads and reduced fatigue life of critical components. Failure to comply could result in component failure and compromised helicopter control, posing significant safety risks. Operators and maintenance teams must ensure compliance to maintain airworthiness and safety.
More for Wsk Pzl-Swidnik SW4
All 10- EASA AD 2023-0072Rotorcraft Flight Manual / Supplement — AmendmentApr 5, 2023
- EASA AD 2021-0244Time Limits / Maintenance Checks — Airworthiness Limitations — AmendmentNov 9, 2021
- EASA AD 2020-0275Time Limits / Maintenance Checks – Airworthiness Limitations – AmendmentDec 10, 2020
- EASA AD 2020-0146Main Rotor — Main Rotor Hub — ReplacementJul 2, 2020
- EASA AD 2019-0300Main Rotor — Lower and Upper Torque Scissors — InspectionDec 12, 2019
Get the next one by email
New ADs and bulletins for Wsk Pzl-Swidnik SW4 and PZL SW-4, summarized like this page, every Monday.