AD 2023-10-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bombardier | Various | Airworthiness Directives; MHI RJ Aviation ULC (Type Certificate Previously Held by Bombardier, Inc.) Airplanes |
| aircraft | Bombardier | Various | Airworthiness Directives; MHI RJ Aviation ULC (Type Certificate Previously Held by Bombardier, Inc.) Airplanes |
| aircraft | Aviat | Various | Airworthiness Directives; MHI RJ Aviation ULC (Type Certificate Previously Held by Bombardier, Inc.) Airplanes |
Unsafe Condition
an unannunciated loss or low quantity of fire extinguishing agent in the engine and auxiliary power unit (APU) fire extinguishing bottles, which could result in the inability to extinguish and suppress an engine or APU fire.
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Required Actions
revise the existing maintenance or inspection program, as applicable, to incorporate the information specified in Task 26-20-00-101, "Visual Check of the Engine Fire Extinguishing bottle pressure gauge" and Task 26-20-00-102, "Visual Check of the APU Fire Extinguishing bottle pressure gauge", of Section 1, "Certification Maintenance Requirements", Subject 1-26, "Fire Protection", of the MHI RJ Model CL-600-2C10, CL-600-2C11, CL-600-2D15, CL-600-2D24, and CL-600-2E25 Series 550/700/705/900/1000 Airworthiness Limitations, Maintenance Requirements Manual (MRM)--Part 2, Volume 1, CSP B-053, Revision 26, dated March 25, 2022
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Compliance Time
Within 60 days after the effective date of this AD
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Affected Aircraft
all MHI RJ Aviation ULC (Type Certificate previously held by Bombardier, Inc.) Model CL-600-2C10 (Regional Jet Series 700, 701 & 702), CL-600-2C11 (Regional Jet Series 550), CL-600-2D15 (Regional Jet Series 705), CL-600-2D24 (Regional Jet Series 900) and CL-600-2E25 (Regional Jet Series 1000) airplanes, certificated in any category
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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