Airworthiness DirectiveSupersededEASA AD CF-2023-56

Equipment/Furnishings – Overhead Storage Compartments – Improvement of the Overhead Bin Harnesses Over the Class Divider

Superseded. A newer version replaces this document.

Published: Jul 25, 2023
Effective: Aug 7, 2023
Deadline: Aug 7, 2023

MHI RJ Aviation CL-600 (Regional Jet)

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

What to do

Operators must inspect the left and right overhead bin electrical harnesses for chafing within 4400 flight hours or 24 months from August 7, 2023, whichever occurs first. Additionally, they must perform the terminating improvement action within 8800 flight hours or 48 months from the same date. All actions must follow the instructions in MHIRJ Service Bulletin 670BA-25-138 or later approved revisions.

Summary

Canadian Airworthiness Directive CF-2023-56 mandates inspections and improvements to the overhead bin electrical harnesses above the class divider on MHI RJ Aviation ULC (formerly Bombardier Inc.) CRJ900 series aircraft, specifically models CL-600-2C10, CL-600-2D15, and CL-600-2D24 with specified serial numbers. The directive addresses potential damage risks to electrical harnesses that could affect critical aircraft systems such as emergency lighting, passenger oxygen, and air conditioning. This directive is issued under Canadian Aviation Regulation 521.427.

What changed

CF-2023-56 introduces mandatory inspections of the overhead bin electrical harnesses for chafing near the class divider mounting plate and requires improvements to prevent damage. It specifies compliance with MHIRJ Service Bulletin 670BA-25-138 and sets inspection and corrective action intervals based on flight hours or calendar months. This is a new directive addressing a safety concern discovered during fleet inspections.

Why it matters

This directive is critical for operators and maintenance organizations to prevent electrical harness damage that could compromise essential aircraft systems, including emergency signs and passenger safety equipment. Compliance ensures continued airworthiness and operational safety of affected CRJ900 aircraft. It also provides a clear path for corrective actions and alternative means of compliance, aiding maintenance planning and regulatory adherence.

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

All 84

Get the next one by email

New ADs and bulletins for MHI RJ Aviation CL-600 (Regional Jet) and RJ Aviation ULC CRJ900, summarized like this page, every Monday.