EASA AD US-2026-19-01
[Correction] Rotorcraft flight control - Torque Tube Assembly and Roller Bearings - Replacement / Inspection
Summary
The document titled "[Correction] Rotorcraft flight control - Torque Tube Assembly and Roller Bearings - Replacement / Inspection" is a final rule correction to Airworthiness Directive (AD) 2026-19-01 issued by the Federal Aviation Administration (FAA). It applies to all MD Helicopters, LLC Model 369 series, 500N, and 600N helicopters. The AD mandates repetitive inspections and potential replacement of the torque tube assembly and roller bearings to ensure flight control safety.
What Changed
This correction adds the missing AD number and amendment number to the regulatory text header of AD 2026-19-01. No other changes to the original AD content or requirements were made. The correction ensures proper identification and incorporation of the AD into 14 CFR Part 39.
Why It Matters
This correction is important for aviation professionals because it clarifies the official documentation and regulatory references for compliance. Operators, maintenance organizations, and compliance teams rely on accurate AD identification to track mandatory inspections and part replacements. Proper documentation prevents confusion and supports adherence to safety requirements, reducing the risk of torque tube assembly failures that could lead to loss of helicopter control.
What To Do
Operators of affected MD Helicopters models must comply with AD 2026-19-01 by performing visual inspections of the torque tube and roller bearings within 100 hours time-in-service or 12 months after October 20, 2026, whichever comes first, and repeat inspections every 100 hours thereafter. Additionally, a freedom-of-movement inspection of the torque tube assembly must be performed before 3,000 total hours time-in-service or within 100 hours after the effective date, and repeated every 100 hours. Any corrosion, cracks, or damage found requires immediate replacement of the affected parts before further flight.
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