803436-22 - Bombardier Aerospace OEM Zodiak AVOX Protective Breathing Equipment Stowage Assembly

803436-22 – Bombardier OEM Protective Breathing Equipment (PBE) Stowage Assembly

Available now through the AirParts Aero marketplace.

Overview Section

The 803436-22 is a flight-critical Protective Breathing Equipment (PBE) Stowage Assembly, manufactured by Zodiac AVOX Systems (now Safran) to Bombardier Aerospace OEM specifications. This assembly provides a secure, rapid-access housing for the PBE (smoke hood) used by flight crews during onboard fire, smoke, or toxic fume emergencies.

Designed specifically for the interior cabin requirements of the Bombardier Challenger and Global series, the -22 variant features a "slimline" or "flush-mount" enclosure. This ensures that while the safety equipment is immediately accessible to crew members, it remains unobtrusive within the high-end aesthetic of the business jet cabin or cockpit.

Key Features Section

• Rapid-Access Latch: Features a high-visibility, "single-motion" opening mechanism that allows crew members to retrieve the PBE in seconds during a high-stress emergency.

• Tamper-Evident Security: Includes a specialized slot for a breakaway lead or plastic seal, providing a visual confirmation during pre-flight inspections that the unit has not been opened or tampered with.

• Fire-Retardant Construction: The housing is fabricated from aerospace-grade, flame-retardant polymers that meet FAR 25.853 flammability requirements.

• Integrated Viewing Window: Features a clear aperture to allow inspectors to verify the "serviceable" status (humidity indicator) of the PBE vacuum seal without opening the stowage box.

• Vibration-Dampened Interior: Engineered with internal padding or tensioners to prevent the PBE canister from rattling during flight, protecting the oxygen-generation chemistry from harmonic wear.

• Bombardier Interior Match: Finished in OEM-specified colors and textures to integrate seamlessly with the bulkhead or closet assemblies of Bombardier business aircraft.

Technical Specifications Section

Aircraft Compatibility Section

The 803436-22 is a standard safety installation found in the following Bombardier airframes:

• Challenger 300 / 350: Frequently mounted in the forward galley or cockpit entrance area.

• Challenger 604 / 605 / 650: Utilized as the primary stowage solution for cabin safety equipment.

• Global Express / 5000 / 6000: Integrated into the crew rest areas and mid-cabin safety stations.

• Learjet 45 / 75: Utilized in the cockpit storage area for pilot emergency equipment.

Technical Applications & Safety

The stowage assembly is just as important as the PBE itself. If the box is damaged or the latch is stuck, the smoke hood is useless. The 803436-22 ensures that the PBE is protected from the "cabin environment" (dust, moisture, and accidental impacts) that could otherwise compromise the vacuum-sealed foil bag containing the oxygen generator.

Safety Warning: During every pre-flight inspection, the 803436-22 must be checked for the presence of the Tamper Seal. If the seal is broken, the PBE inside must be removed and inspected to ensure the vacuum seal has not been compromised. If the foil bag is "puffy," the oxygen generator has reacted with moisture and the unit is unserviceable.

Technical Engineering Insight

The engineering value of the 803436-22 lies in its Structural Integrity under Depressurization. In the event of a rapid decompression, the stowage box is designed to vent pressure equally, preventing the enclosure from "exploding" or becoming a projectile in the cabin. The -22 variant is also tested for "Crash Load" factors, ensuring that the heavy PBE unit stays secured in its mount during an emergency landing.

By sourcing this part through AirParts Aero, you ensure that the mounting points are not stressed or cracked. Over time, plastic stowage units can suffer from "material fatigue" due to the constant vibration of the airframe; a genuine OEM replacement ensures the unit remains securely attached to the bulkhead.

Installation & Maintenance Addendum

1. Mounting Hardware: Always use the OEM-specified flush-mount screws to prevent snagging the PBE bag during an emergency retrieval.

2. Seal Verification: When installing a new PBE into the box, ensure the humidity indicator (visible through the window) is Blue. If it is Pink, the PBE is unserviceable.

3. Latch Testing: Periodically test the door hinge and latch for smooth operation. Do not use oil-based lubricants; use a dry-film silicone if the hinge becomes stiff.