MOC VTOL.2325(b)(1) and (b)(2) Fire Protection: fire extinguishers and design of interiors

1.      Category Basic

(f)      Fire Extinguishers: CS 23.851(a), (b)(1), (c) Amdt. 4 are accepted as a means of compliance

(g)      Compartment interiors: CS 27.853 Amdt. 6 is accepted as a means of compliance.

(h)     Cargo and baggage compartment: CS 27.855 Amdt. 6 is accepted as a means of compliance.

2.      Category Enhanced

For Category Enhanced the means of compliance accepted for Category Basic should be completed with the following provisions:

(a)      Compartment interiors: CS 29.853(a), (b) and (d) Amdt. 7 are accepted as a means of compliance.

(b)     Baggage compartment:

A baggage compartment that is located where the presence of a fire would not easily be discovered by a pilot while at his station should:

(1)     Have ceiling and sidewall liners and floor panels constructed of materials that have been subjected to and meet the 45° angle test of Appendix F to CS-23 Amdt. 4. The flame should not penetrate (pass through) the material during application of the flame or subsequent to its removal. The average flame time after removal of the flame source should not exceed 15 s, and the average glow time should not exceed 10 s. The compartment should be constructed to provide fire protection that is not less than that required of its individual panels; or

(2)     Be constructed and sealed to contain any fire within the compartment or have a device to ensure detection of fires or smoke by a crew member while at his station and to prevent the accumulation of harmful quantities of smoke, flame, extinguishing agents, and other noxious gases in any crew or passenger compartment.

3.      Category Basic and Enhanced: Detection and extinguishing systems in designated fire zones

(a)      Detection Systems:

It is accepted that adequate fire or smoke awareness for the designated fire zones is provided by the installation of detection systems that follow Section 3(g) in MOC VTOL.2330.

(b)     Extinguishing Systems:

Following CS requirements are accepted as means to comply with VTOL.2325(b)(1) regarding adequate extinguishing means for Designated Fire Zones in accordance with section 1(d) of MOC VTOL.2330:

(1)     CS 27.1194 Amdt. 6 “Other surfaces”

(2)     CS 29.1195 Amdt. 6 “Fire extinguishing systems”

(3)     CS 29.1197 Amdt. 6 “Fire extinguishing agents”

(4)     CS 29.1199 Amdt. 6 “Extinguishing agent containers”

(5)     CS 29.1201 Amdt. 6“Fire extinguishing system materials”

For extinguishing systems in Fire Withstanding Zones and Explosive Fire Zones (refer to definitions in sections 1(c) and 1(e) of MOC VTOL.2330), specific means of compliance should be agreed with the Agency taking into consideration the intended operation and existing technologies.