A829700-5 - Kiddie Aerospace 72 Cubic Inches Fire Extinguisher

A829700-5 – Kidde Aerospace Automatic Lavatory Fire Extinguisher (Halon 1301)

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Overview

The Kidde Aerospace A829700-5 is a flight-critical, automatic fire extinguisher engineered for a single, vital purpose: the suppression of fires within aircraft lavatory waste receptacles. This is a fixed, self-contained fire suppression system, not a portable, hand-held unit. It is charged with Halon 1301 (Bromotrifluoromethane), a clean flooding agent that rapidly extinguishes fires without leaving a residue. The unit is designed to operate completely automatically, requiring no crew intervention.

The A829700-5 features a heat-sensitive actuation mechanism. When the temperature within the protected waste bin rises to a predetermined level, a eutectic plug in the discharge head melts, automatically releasing the entire Halon 1301 charge into the enclosure. This immediate response is critical for containing a potential in-flight fire at its source. As a genuine OEM part, this extinguisher meets the rigorous FAA and EASA requirements for lavatory fire protection.

Key Features

• Automatic Thermal Actuation: The unit is designed to discharge automatically when its sensor is exposed to a specific fire temperature, providing immediate fire suppression without crew action.

• Contains Halon 1301 Flooding Agent: Utilizes Halon 1301, a highly effective, clean gaseous agent that rapidly extinguishes fires by chemically interrupting the combustion chain reaction.

• Designed for Lavatory Waste Bins: Specifically engineered for the confined space of a lavatory waste receptacle, providing localized "spot" protection as required by airworthiness regulations.

• Fixed, Single-Use System: This is a one-shot, non-rechargeable device that is permanently installed via a mounting bracket. If discharged, the entire unit must be replaced.

• Integrated Pressure Gauge: A simple, color-coded pressure gauge provides an immediate and unambiguous indication of the extinguisher's readiness and charge state for pre-flight and maintenance checks.

• Meets 14 CFR §25.854 Requirements: Designed and certified to meet the specific FAA regulations mandating fire protection for lavatory trash receptacles.

Technical Specifications

• Part Number: A829700-5

• Component Type: Automatic Fixed Fire Extinguisher

• OEM Manufacturer: Kidde Aerospace (a Collins Aerospace company)

• Application: Lavatory Waste Receptacle Fire Suppression

• Extinguishing Agent: Halon 1301 (Bromotrifluoromethane), pressurized with Nitrogen.

• Cylinder Volume: 72 Cubic Inches

• Actuation Method: Automatic, via a heat-sensitive eutectic plug in the discharge head.

• Nominal Actuation Temperature: 174°F (79°C)

• Governing Specifications: FAA TSO-C1, UL Listed.

Aircraft Compatibility

The A829700-5 is a standard safety system component on a wide range of business and corporate jets.

• Primary Aircraft Platforms:

  • Cessna Citation Series (various models)

  • Other business and transport category aircraft requiring a 72 cubic inch lavatory extinguisher.

Note: Verification of applicability is the responsibility of the installer. Always consult the current version of the aircraft's Illustrated Parts Catalog (IPC) and maintenance manual to confirm part number eligibility for a specific aircraft serial number and lavatory configuration.

Applications

• Sole Application: The automatic detection and suppression of fires originating within an aircraft lavatory waste bin, as mandated by federal airworthiness regulations.

Why Choose A829700-5?

A fire in an aircraft lavatory is a significant safety threat. This automatic extinguisher provides the first and fastest line of defense. Using the certified Kidde OEM A829700-5 is mandatory to ensure compliance with the aircraft's type certificate. This guarantees the unit has the correct volume, agent charge, and, most critically, the precisely calibrated thermal activation point required for the specific installation. Use of non-certified or improperly serviced units creates an unacceptable risk of system failure during an in-flight fire.

The automatic actuation of the A829700-5 is achieved through a precisely engineered eutectic plug in the discharge head. A eutectic alloy is a specific mixture of two or more metals (such as bismuth, lead, tin, and cadmium) that has a single, sharp melting point that is significantly lower than that of its individual constituent metals. The discharge head uses a plug made of a specific eutectic alloy formulated to liquefy almost instantaneously when it reaches its calibrated temperature (e.g., 174°F / 79°C). This plug mechanically retains a piercing pin under spring tension. When a fire in the waste receptacle heats the discharge head, the plug melts away, releasing the spring-loaded pin. The pin is driven forward, puncturing a sealed disk within the bottle and instantly releasing the entire charge of Halon 1301. This purely mechanical, thermally-activated system is exceptionally reliable as it requires no electrical power, wiring, or external input to function.

Note: This is a flight-critical piece of life-saving equipment. It is a highly pressurized cylinder and must be handled, stowed, and shipped as such. It must be visually inspected during pre-flight and maintenance checks to ensure the pressure gauge is in the green serviceable range. This extinguisher is a life-limited item that requires periodic weighing and hydrostatic testing by a certified DOT-approved repair station in strict accordance with the Component Maintenance Manual (CMM). It is a single-use device and must be replaced if discharged.

Documentation

Component Maintenance Manuals (CMMs) for this device are proprietary to Kidde Aerospace / Collins Aerospace. All inspection, service, and overhaul procedures must be performed in accordance with the latest revision of the CMM and applicable FAA regulations, such as 14 CFR §25.854.