Oxygen – Portable Protective Breathing Equipment (PBE) – Missing PBE in the Forward Area of the Aeroplane - Civil Aviation Safety Alert (CASA) No. 2023-02


Owners, Operators and Maintainers of Bombardier Inc Model CL-600-2B16 Aeroplanes

File Classification No.: Z 5000-35
RDIMS No.: 19435859
Document No.: CASA 2023-02
Issue No.: 01
Effective Date: 2023-07-19


The purpose of this Civil Aviation Safety Alert (CASA) is to emphasize the importance of the portable PBE that provides protection for crew members when investigating or combatting a fire in the cabin. This CASA provides details on the potential for misinterpretation of different breathing equipment as portable crew PBE and clarifications to correct the misinterpretation.


Portable PBE for crew members use is designated as emergency equipment and is required to be installed in the cabin, in accordance with FAR 25.857 and 25.1439 at Amendment 25-38, effective 1 February 1977, for all CL-600-2B16 aeroplanes. The portable PBE is designed to provide adequate personal protection (must protect from the effects of smoke, carbon dioxide, harmful gases, and oxygen deficiency) to the designated crew member who may be required to investigate and combat in-flight emergencies involving fire, smoke, or fumes. Transport Canada is recommending that owners, operators and maintainers of the CL-600-2B16 perform inspections to verify that the requisite portable PBE is installed on their aeroplanes. Owners and operators may also wish to verify with their local civil aviation authority whether other supplemental requirements exist for this type of emergency equipment.

Recommended action:

Verify if portable PBE, marked with TSO C116 or TSO C116a, is installed in the left-hand side (LHS) forward wardrobe or cockpit or passenger cabin area of the aeroplane.

If no portable PBE marked with TSO C116 or TSO C116a is found installed, contact your interior Supplemental Type Certificate Holder to obtain instructions for installation of the required portable PBE.

Contact office :

For more information concerning this issue, contact a Transport Canada Centre; or contact Mihaela Kramer, Continuing Airworthiness in Ottawa, by telephone at 1-888-663-3639, by fax at 613-996-9178 or by e-mail at TC.CAWWEBFEEDBACK-retroactionWebMDLN.TC@tc.gc.ca.

Original signed by

Jenny Young
Chief, Continuing Airworthiness
National Aircraft Certification


The Transport Canada Civil Aviation Safety Alert (CASA) is used to convey important safety information and contains recommended action items. The CASA strives to assist the aviation industry's efforts to provide a service with the highest possible degree of safety. The information contained herein is often critical and must be conveyed to the appropriate office in a timely manner. The CASA may be changed or amended should new information become available.