Business · 05/11/1997Updated: 10/17/2026 · 1 min read

New Airworthiness Directive for Eurocopter MBB-BK 117 Helicopters

Summary

Eurocopter Deutschland GmbH Model MBB-BK 117 A-1, A-3, A-4, B-1, B-2, and C-1 helicopters are subject to a new airworthiness directive requiring a revised clutch life limit and an updated maintenance record. The change is prompted by a recalculation of life limitations by Warner Electric, the clutch manufacturer.

Original source language: Federal Register — Federal Aviation AdministrationOpen original release →

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