What are the minimum fire-resistance requirements for the materials used in accessible and inaccessible cargo compartments that are not occupied by passengers or crew?

The material must be at least fire-resistant, as stated in CS 29.855(a)(1).

What protection is required for controls, wiring, lines, equipment, or accessories located in a cargo or baggage compartment?

They must be protected so that they cannot be damaged by the movement of cargo in the compartment, and their breakage or failure will not create a fire hazard.

When the cabin area is considered a cargo compartment for rotorcraft used for cargo only, what additional requirements apply regarding ventilation?

There must be means to shut off the ventilating airflow to or within the compartment, and controls for this purpose must be accessible to the flight crew in the crew compartment.

For cargo-only rotorcraft where the cabin is treated as a cargo compartment, what is required for crew emergency exits and heat sources?

Required crew emergency exits must be accessible under all cargo loading conditions, and sources of heat within each compartment must be shielded and insulated to prevent igniting the cargo.

CS 29.855 Cargo and baggage compartments

Q: Under which specific conditions do materials in cargo or baggage compartments need to meet the requirements of CS 29.853(a)(1), (a)(2), and (a)(3)?

These requirements apply when: (i) a compartment fire would be easily discovered by a crew member at their station; (ii) each part of the compartment is easily accessible in flight; (iii) the compartment has a volume of 5.6 m3 (200 cu ft) or less; and (iv) protective breathing equipment is not required, notwithstanding CS 29.1439(a).

Q: For a cargo compartment that is not sealed to contain fires completely, what must be ensured, and how must this be demonstrated?

It must be designed 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. This must be shown in flight.

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CS 29.855 Cargo and baggage compartments

ED Decision 2003/16/RM

(a) Each cargo and baggage compartment must be constructed of, or lined with, materials in accordance with the following:

(1) For accessible and inaccessible compartments not occupied by passengers or crew, the material must be at least fire-resistant.

(2) Materials must meet the requirements in CS 29.853(a)(1), (a)(2), and (a)(3) for cargo or baggage compartments in which:

(i) The presence of a compartment fire would be easily discovered by a crew member while at the crew member’s station;

(ii) Each part of the compartment is easily accessible in flight;

(iii) The compartment has a volume of 5.6 m³ (200 cu ft) or less; and

(iv) Notwithstanding CS 29.1439(a), protective breathing equipment is not required.

(b) No compartment may contain any controls, wiring, lines, equipment, or accessories whose damage or failure would affect safe operation, unless those items are protected so that:

(1) They cannot be damaged by the movement of cargo in the compartment; and

(2) Their breakage or failure will not create a fire hazard.

(c) The design and sealing of inaccessible compartments must be adequate to contain compartment fires until a landing and safe evacuation can be made.

(d) Each cargo and baggage compartment that is not sealed so as to contain cargo compartment fires completely without endangering the safety of a rotorcraft or its occupants must be designed, or must 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. This must be shown in flight.

(e) For rotorcraft used for the carriage of cargo only, the cabin area may be considered a cargo compartment and, in addition to sub-paragraphs (a) to (d), the following apply:

(1) There must be means to shut off the ventilating airflow to or within the compartment. Controls for this purpose must be accessible to the flight crew in the crew compartment.

(2) Required crew emergency exits must be accessible under all cargo loading conditions.

(3) Sources of heat within each compartment must be shielded and insulated to prevent igniting the cargo.

Details

Source-Title: CS 29.855 Cargo and baggage compartments View latest amendments

Erulesid: ERULES-1963177438-5514 Compare versions

Domain: Initial airworthiness

Amendedby: Initial issue

Applicabilitydate: 14 November, 2003

Entryintoforcedate: 14 November, 2003

Regulatorysource: ED Decision 2003/16/RM Navigate

Regulatorysubject: CS-29

Typeofcontent: CS (Certification specification)

Origin: EASA

Category: EAR