Rotors Flight Control — Tail Rotor Actuator — Inspection
- Published
- Effective
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of MBB-BK117 C-2 helicopters must inspect the tail rotor actuator part number B673M40A1002 before the next flight after 11 December 2024 and then at intervals not exceeding 400 flight hours or 12 months. If any wear or damage is found, corrective actions must be performed before further flight, following Airbus Helicopters' repair instructions. A ferry flight of up to 5 flight hours without passengers is permitted to reach a maintenance facility for the initial inspection.
Summary
EASA Airworthiness Directive 2024-0237-E is an emergency directive addressing the tail rotor actuator on MBB-BK117 C-2 helicopters. It mandates inspections of the tail rotor actuator part number B673M40A1002 due to reported vibrations and a worn, broken bolt that could lead to loss of helicopter control. The directive applies to all serial numbers of this helicopter model and requires repetitive inspections and corrective actions as necessary.
What changed
This new emergency airworthiness directive introduces mandatory repetitive inspections of the tail rotor actuator on affected MBB-BK117 C-2 helicopters. It requires inspections before the next flight after the effective date and at intervals not exceeding 400 flight hours or 12 months. Corrective actions must be taken if discrepancies are found, and a single ferry flight is allowed to reach a maintenance location for the initial inspection.
Why it matters
This directive is critical for aviation professionals because it addresses a safety issue that could result in loss of helicopter control. Operators and maintenance organizations must comply to ensure continued airworthiness and avoid operational disruptions. Compliance teams need to integrate these inspections into maintenance schedules to meet regulatory requirements and maintain safe flight operations.
More for Airbus Helicopters MBB-BK 117
All 63- EASA PAD 26-121Equipment / Furnishings – System Interface Unit – ReplacementOct 8, 2026
- EASA AD 2026-0188Instruments – Warning Unit Emergency Off Switches – Operational CheckSep 30, 2026
- EASA PAD 26-111Landing Gear – Emergency Flotation System Adhesive Label – RemovalSep 22, 2026
- EASA AD 2026-0152Air Conditioning – Vapor Cycle Air Conditioning System – InspectionJul 30, 2026
- EASA AD 2026-0151Main Rotor Drive – Rotor Hub-Shaft – InspectionJul 30, 2026
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