FAA proposes rule for MD Helicopter coupling inspection
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Table of Contents
The Federal Aviation Administration is proposing a new safety rule for certain MD Helicopters models. The proposal targets helicopters with specific main transmission drive shaft couplings that were found to have mechanical damage or were improperly manufactured by a new vendor. If these parts fail, they could cause the helicopter to lose power to its main rotor blades.
Why it matters: This action addresses a specific manufacturing defect that could lead to catastrophic failure in flight. While it does not ground all helicopters immediately, it establishes a mandatory safety check to prevent potential accidents caused by faulty coupling parts. The practical significance is ensuring that known defective components are identified and removed from service before they cause an incident.
Who it affects
- Owners and operators of MD Helicopters Model 369D, 369E, 369F, 369FF, 369H, and 500N helicopters with specific coupling serial numbers
This information comes from a proposed rule published by the Federal Aviation Administration in the Federal Register; readers should verify details against the original document before taking action.
Agency: Transportation Department, Federal Aviation Administration
Source: Federal Register — read the official document