CANCELLED: Tail Rotor Drive — Rear Drive Shaft Friction Ring — Inspection / Replacement
- Published
- Effective
- Deadline
- Replaces
- 2007-0211
- Replaces
- F-2005-076
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Affected operators and maintenance teams should continue to follow the standard T inspection maintenance schedule for the rear drive shaft friction ring on EC 120 B helicopters. No new or additional inspection or replacement actions are required as a result of this cancellation. Stakeholders should update their compliance records to reflect the withdrawal of EASA AD 2007-0211.
Summary
EASA Airworthiness Directive Cancellation Notice 2007-0211-CN cancels the previous directive concerning inspection and replacement of the tail rotor drive rear drive shaft friction ring on Airbus Helicopters EC 120 B models fitted with specific part numbers C651A3102051 or C651A3102052. The cancellation follows new analyses confirming that standard maintenance inspections are sufficient to detect any displacement of the damper friction ring before failure occurs. This notice removes the mandatory repetitive checks previously required for these helicopters.
What changed
This cancellation notice officially withdraws EASA Airworthiness Directive 2007-0211, which mandated repetitive inspections of the rear drive shaft friction ring on EC 120 B helicopters. The change is based on updated assessments showing that existing standard maintenance procedures adequately address the identified risk. As a result, no further mandatory inspection or replacement actions are required under this directive.
Why it matters
For aviation professionals, this cancellation reduces the regulatory burden by eliminating the need for additional repetitive inspections of the tail rotor drive shaft friction ring on affected EC 120 B helicopters. Operators and maintenance organizations can rely on standard maintenance inspections to ensure safety, simplifying compliance and potentially reducing maintenance costs and downtime. It also clarifies that no unsafe condition currently exists that would necessitate further action.
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