ASG12000-3 – Continental Motors OEM 28 Volt 95 Amp Alternator
Available now on the Airparts.aero Marketplace.
Overview
The Continental ASG12000-3 is a genuine OEM, high-capacity, gear-driven alternator, engineered as the primary electrical power source for specific models of the Cessna TTx and other high-performance aircraft. This 28-volt, 95-amp alternator is a flight-critical component designed to generate the substantial DC electrical power required to operate the aircraft's advanced, all-glass avionics suite, climate control systems, and ice protection equipment. As a genuine Continental part, this alternator is built for exceptional durability and consistent, high-power output in the demanding firewall-forward environment.
Key Features
High-Capacity 95 Amp Output: Delivers a powerful 95 amps of continuous power at a regulated 28 VDC. This high capacity is essential for supporting the significant electrical loads of a modern, "all-electric" high-performance aircraft.
Gear-Driven Reliability: Driven directly by the engine's accessory gear train. This design provides a positive, slip-free mechanical connection that is significantly more reliable than belt-driven systems, eliminating the risk of a thrown or broken belt causing a complete loss of generated power.
Integrated Cooling System: Features an integral, high-efficiency cooling fan and a purpose-designed vented housing. This ensures proper airflow over the internal components (stator, rotor, and diodes), preventing overheating and ensuring long service life, especially during high-power, low-airspeed operations.
Brushless Design: Modern alternators in this class, like the ASG12000-3, typically feature a brushless design. This eliminates carbon brushes—the most common wear item—dramatically increasing the Time Between Overhaul (TBO) and overall reliability of the unit.
Genuine Continental OEM Part: As a genuine factory component, it guarantees perfect fitment, correct gear pitch and backlash, and the electrical performance characteristics required to work seamlessly with the aircraft's voltage regulator and dual-bus electrical system.
Technical Specifications
Part Number: ASG12000-3
Component Type: Engine-Driven Alternator
Voltage Output: 28 VDC
Current Output: 95 Amps
Drive Type: Gear-Driven
Cooling: Integrated Fan, External Ventilation
Primary Engine Application: Continental TSIO-550-C
Certification: FAA Production Approval
Aircraft Compatibility
The Continental ASG12000-3 is the specified OEM alternator for Cessna's flagship high-performance piston aircraft. It is imperative to consult the specific aircraft's Illustrated Parts Catalog (IPC) for final verification.
Primary Aircraft Models:
Cessna TTx Model T240
May be used on other high-performance aircraft utilizing a similar engine and electrical architecture.
Applications
The ASG12000-3 is the heart of the aircraft's advanced electrical system:
Primary Power Generation: Its sole function is to convert the engine's mechanical energy into the high-amperage electrical energy required to power all onboard systems after engine start.
Battery Charging: Provides the necessary current to maintain the charge of the aircraft's main and standby batteries.
Electrical System Overhaul: The primary component to replace or overhaul when troubleshooting charging system failures, low bus voltage, or alternator-out annunciations.
Why Choose ASG12000-3?
In a technologically advanced aircraft like the Cessna TTx, the 95-amp alternator is a no-fail component. A loss of this power source in instrument meteorological conditions (IMC) would be a critical emergency. The Continental ASG12000-3 is the genuine, factory-specified component designed to provide reliable, high-amperage power for thousands of hours. Using a genuine OEM alternator ensures that the unit's drive gear is manufactured to the correct metallurgy and tooth profile, and that its electrical output is perfectly matched to the aircraft's sophisticated electrical bus and voltage regulation system.
Order Your Continental ASG12000-3 Alternator Now
Ensure the reliability and integrity of your aircraft's electrical system with a genuine OEM alternator. Visit Airparts.aero to inquire about new or overhauled ASG12000-3 alternators today.
The ASG12000-3 is a synchronous AC generator that produces three-phase alternating current. This AC output is then passed through an internal, solid-state rectifier bridge, which consists of six heavy-duty diodes. This bridge converts the three-phase AC power into smooth, usable direct current (DC) for the aircraft's 28-volt electrical bus. The alternator's output voltage is controlled by varying the small amount of DC current supplied to its rotor, known as the "field current." This is managed by the aircraft's voltage regulator, which senses the bus voltage and adjusts the field current as needed to maintain a constant output under the heavy and fluctuating electrical loads of a modern glass cockpit, autopilot, and environmental systems.
Note: This is a flight-critical component. Installation must be performed by a certified A&P mechanic. Proper gear backlash must be checked and set upon installation to prevent damage to the engine's accessory drive train. All electrical connections must be clean and torqued to the specified value.