Fire Protection — Fire Extinguisher — Replacement of the Cargo Bay Fire Extinguisher Container Pressure Switch/Gauge Assembly
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators must remove and replace affected fire extinguisher containers with part numbers 473919-1, 473920-1, and 474901-1 manufactured before March 2020. The replacement must be completed within 10 years from the effective date of May 3, 2022. The replacement should follow the instructions in MHIRJ Service Bulletin 670BA-26-013 or later approved revisions.
Summary
Canadian Airworthiness Directive CF-2022-20 addresses fire protection concerns on MHI RJ Aviation ULC model CL-600-2C10, CL-600-2C11, CL-600-2D15, CL-600-2D24, and CL-600-2E25 aircraft. It mandates the replacement of cargo bay fire extinguisher container pressure switch/gauge assemblies manufactured before March 2020. This directive aims to ensure accurate pressure readings to maintain fire suppression effectiveness in cargo bays.
What changed
CF-2022-20 introduces a requirement to replace high rate of discharge (HRD) and low rate of discharge (LRD) cargo bay fire extinguisher container pressure switch/gauge assemblies that were manufactured prior to March 2020. The change addresses a defect where the pressure switch/gauge may display incorrect pressure under low temperature conditions, potentially masking a low-pressure condition.
Why it matters
This directive is critical for aviation professionals because inaccurate pressure readings could lead to undetected reductions in fire extinguisher capacity, increasing the risk of uncontrolled cargo fires. Operators and maintenance teams must ensure compliance to maintain aircraft safety and regulatory adherence. Failure to comply could compromise fire suppression systems and endanger the aircraft and its occupants.
More for MHI RJ Aviation CL-600 (Regional Jet)
All 84- EASA AD CF-2026-48Pneumatic – 10th and 14th Stage Bleed Duct Damaged or Missing InsulationOct 7, 2026
- EASA AD CF-2026-43Ice and Rain Protection – Wing Anti-Ice – Aircraft Flight Manual Procedure Anomaly - AmendmentSep 11, 2026
- EASA AD CF-2026-09R2Ice and Rain Protection – Engine Cowl Anti-Ice – Ejector Pipe ChafingAug 5, 2026
- EASA AD CF-2026-07R1Ice and Rain Protection – Engine Cowl Anti-Ice – Ejector Pipe ChafingJun 22, 2026
- EASA AD CF-2026-09R1
Get the next one by email
New ADs and bulletins for these 6 aircraft types, summarized like this page, every Monday.