Superseded by TCCA AD CF-2025-38

Published: Jun 21, 2024
Effective: Jul 4, 2024
Deadline: Jul 4, 2024

AI-generated summary of the official EASA document. Verify against the PDF before acting.

What to do

Affected operators must inspect the torque of the anti-yaw mounting block bolts within 2200 flight hours or 18 months from July 4, 2024, and repeat inspections every 2200 flight hours thereafter. Additionally, they must replace the bolts with improved versions within 8800 flight hours or 6 years from the effective date to terminate inspection requirements.

Summary

Canadian Airworthiness Directive CF-2024-24 addresses missing or loose bolts in the anti-yaw mounting block of the horizontal stabilizer on Mitsubishi Heavy Industries RJ Aviation ULC aircraft, specifically models CL-600-2C10, CL-600-2C11, CL-600-2D15, CL-600-2D24, and CL-600-2E25 within certain serial number ranges. The directive mandates inspections and eventual replacement of these bolts to ensure structural integrity and flight safety.

What changed

This new directive introduces mandatory inspections of the anti-yaw mounting block bolts on the horizontal stabilizer at specified intervals to verify proper torque and presence. It also requires replacement of these bolts with ones equipped with a secondary locking device within defined flight hours or calendar time to prevent bolt loosening or loss.

Why it matters

For operators and maintenance organizations, compliance with CF-2024-24 is critical to prevent potential loss of the horizontal stabilizer due to bolt failure, which could result from bird strikes or turbulence. Ensuring bolt integrity enhances aircraft safety and regulatory compliance, reducing risk of in-flight structural failure.

More for MHI RJ Aviation CL-600 (Regional Jet)

All 84

Get the next one by email

New ADs and bulletins for these 6 aircraft types, summarized like this page, every Monday.