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10800C2F – Bombardier OEM "Quick-Donning" Crew Oxygen Mask
Available now on the Airparts.aero Marketplace.
The 10800C2F is a high-performance, flight-critical "Quick-Donning" crew oxygen mask specifically engineered for the flight decks of Bombardier Learjet and Challenger series aircraft. Manufactured by Avox Systems (Safran/Zodiac) as an Original Equipment Manufacturer (OEM) component, this mask is designed for rapid one-handed donning (less than 5 seconds) during a sudden loss of cabin pressurization. The 10800C2F provides life-sustaining oxygen to the pilot or co-pilot, featuring an integrated smoke goggle assembly and a high-fidelity noise-canceling microphone to ensure clear communication with Air Traffic Control (ATC) during emergency descents.
Constructed from medical-grade silicone and featuring a specialized pneumatic harness, the 10800C2F is built for long-term comfort and extreme reliability. The mask interfaces with the aircraft’s high-pressure oxygen system via a flexible hose and a "Regulator-on-Mask" architecture, allowing the pilot to select between "Normal" (diluter-demand), "100%" (pure oxygen), and "Emergency" (positive pressure) modes to combat hypoxia or smoke/fume inhalation.
Key Features
Pneumatic Quick-Donning Harness: Features an inflatable head-harness that expands when the side triggers are squeezed and instantly contracts to fit the pilot’s head when released, ensuring a perfect seal over headsets or glasses.
Integrated Smoke Goggles: Equipped with a wide-view, anti-fog lens that provides a gas-tight seal around the eyes, protecting the pilot from stinging smoke and toxic fumes.
Three-Mode Regulator: Includes a tactical rotary or slide selector for:
Normal: Mixes ambient air with oxygen to conserve the cylinder supply.
100%: Delivers pure oxygen at all altitudes.
Emergency: Provides positive pressure flow to purge the mask of smoke or to assist breathing at altitudes above 30,000 feet.
Integrated Carbon Microphone: Features a high-sensitivity, noise-canceling microphone that interfaces with the aircraft's audio panel via a standard U-174 or specialized connector.
Bi-Directional Exhalation Valve: Designed to prevent the "re-breathing" of $CO_2$ and to minimize internal moisture buildup during prolonged use.
Technical Specifications
Part Number: 10800C2F
Manufacturer: Avox Systems / Safran (for Bombardier)
Component Type: Crew Oxygen Mask with Integrated Goggles
Operating Pressure: Compatible with 70–85 PSI (Low-pressure side of regulator)
Material: Hypoallergenic Silicone / Polycarbonate Lens
Microphone: Integrated (Noise-Canceling)
Hose Length: Calibrated for specific cockpit "cup" or "stowage box" mounting.
Certification: TSO-C78 / TSO-C89 (Crew Oxygen Equipment)
Service Life: Typically 6-year overhaul cycle / 12-year life (Verify per CMM).
Aircraft Compatibility
Bombardier Learjet Series: 40, 45, 60, 70, 75.
Bombardier Challenger Series: 300, 350.
Note: The 10800C2F is specific to certain cockpit stowage configurations. Always verify the part number in the Aircraft Illustrated Parts Catalog (IPC) Section 35-10 to ensure the connector and hose length match your airframe’s oxygen manifold.
Applications
The 10800C2F is utilized for Crew Life Support and Smoke Protection. Its primary roles include:
Decompression Recovery: Providing immediate oxygen to prevent hypoxia during a rapid loss of cabin pressure.
Smoke/Fume Protection: Protecting the flight crew from cockpit fires or "Smell-of-Burn" (SOB) events.
High-Altitude Safety: Serving as the mandatory safety backup for pilots flying solo at altitudes above FL250 or when one pilot leaves the flight deck.
Why Choose 10800C2F?
Choosing the genuine Bombardier 10800C2F is vital for Emergency Response Timing. The pneumatic harness of the 10800C2F is specifically calibrated to the Learjet/Challenger oxygen system flow rates; non-OEM masks may suffer from "slow-inflation" of the harness or "seal-leakage" during high-G maneuvers. Furthermore, the acoustic dampening in the 10800C2F microphone is tuned to the specific cockpit noise floor of Bombardier turbine jets, ensuring that emergency radio transmissions remain intelligible during the high-decibel environment of a rapid descent.
The 10800C2F operates on the principle of Demand-Flow Regulation and Pneumatic Expansion. When the pilot squeezes the harness triggers, the oxygen pressure ($P$) within the mask's inlet manifold is redirected to the head-straps, causing them to expand elastically ($F = -kx$). Upon release, the straps retract, creating a gas-tight seal that can withstand a differential pressure of up to $5\text{ psi}$ above ambient. The mask's "Emergency" setting creates a positive pressure gradient, ensuring that the internal pressure of the mask is higher than the cockpit pressure, which physically prevents smoke or toxic gases from "leaking" into the pilot's breathing zone—even if the seal is partially compromised by facial hair or eyewear.
Note: This is a flight-critical life-support component. Installation and testing must be performed by a certified A&P/AME. Prior to installation, verify the "Overhaul/Test" date on the mask's tag is current. Use only oxygen-safe lubricants on the O-rings; oil or grease can lead to a spontaneous explosion. Ensure the mask is properly "stowed" in its cup to ensure the "Oxygen ON" flag activates correctly when removed. A "Communication Test" and "Leak Test" are mandatory post-installation.
