55271

SkyTec 55271 STARTER ADAPTER, PMA REPLACEMENT FOR PN 643259A18

PN: 55271


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DESCRIPTION | FEATURES | SPECIFICATIONS | DOCUMENTS | VIDEO | ASK A QUESTION

DESCRIPTION

**Sky-Tec starter adapters** are direct-replacement components for selected Continental starter adapter assemblies. They transfer torque from the starter motor to the engine, allowing the engine to crank during the starting sequence. When the starter motor is activated, the starter adapter’s internal coil spring tightens around the drive shaft and transfers rotational force to the engine. Once the engine starts and rotates faster than the starter, the spring releases the shaft, allowing the engine to operate independently of the starter motor. Sky-Tec starter adapters are precision-engineered for specific Continental engine applications and are available in **new or factory-rebuilt configurations**, depending on the part number. A worn or slipping starter adapter may prevent the engine from turning even when the starter motor is operating and should be inspected, overhauled or replaced in accordance with the applicable maintenance documentation. *Images are representative and may not show the exact product for sale.* --- ## Applications - Selected Continental piston engine applications - Direct replacement for applicable Continental starter adapter assemblies - Replacement for worn, damaged or slipping starter adapters - Suitable for aircraft starting-system maintenance and repair - Available in new or factory-rebuilt configurations, depending on the part number --- ## Why CJ Aerospace? CJ Aerospace supplies a comprehensive range of **Sky-Tec aircraft starters, starter adapters and associated components** for compatible Continental engine applications. Our team can assist with identifying the appropriate replacement starter adapter based on the existing part number, engine model and required product condition. - 🇦🇺 **Australian-owned and operated** - 📦 **New and factory-rebuilt options available** - 🔧 **Technical assistance with product selection and compatibility** - ✈️ **Reliable support for aircraft owners, operators and aviation professionals** > ✉️ [Contact us at sales@cjaerospace.com.au](mailto:sales@cjaerospace.com.au) > Need help identifying the correct Sky-Tec starter adapter? Contact our team for assistance.

FEATURES

- Transfers torque from the starter motor to the engine during cranking - Internal coil-spring mechanism engages the drive shaft during starting - Releases the drive shaft after the engine starts - Direct replacement for applicable Continental starter adapter assemblies - Maintains the form, fit and function of the specified original component - FAA-PMA-approved replacement options - Precision-engineered for specific Continental engine applications - New or factory-rebuilt configurations available, depending on the part number - Designed for reliable operation in demanding aircraft engine environments

SPECIFICATIONS

Package Dimensions

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Details

| **Specification** | **Details** | |--------------------------------------|-------------| | **Part Number** | 55271 | | **Product Type** | Starter Adapter Assembly | | **Condition** | New | | **Continental Starter Adapter P/Ns** | 643259A18, 643259A7, 635050A4, 635050A14, 635050A5 | | **Compatible IO-470 Models and Specifications** | IO-470-C (1B, 8B, 9B, 10B, 11B, 12B, 14B)
IO-470-D (12B, 19B, 27B, 30B, 42B, 44B, 52B, 52C, 53B–58B)
IO-470-E (1B, 6B, 13B, 17B–22B)
IO-470-F (1B, 3B, 4B, 7B, 18B, 19B, 19K, 26B, 26C, 26D, 27B–34B, 36B, 37B)
IO-470-H (1B, 6B)
IO-470-J (1B, 8B, 9B, 10B)
IO-470-K (3B, 6B, 11B, 12B, 14B–30B)
IO-470-L (5B, 8B, 9B, 11B, 12B, 15B, 19B–29B, 31B, 32B)
IO-470-M (1B, 5B, 6B, 7B)
IO-470-N (1B, 3B, 10B, 10K, 11B–21B, 23B–26B)
IO-470-S (1B, 1K, 2B, 3B, 9B–14B)
IO-470-U (1B, 4B)
IO-470-V (6B, 8B, 9B, 15B, 16B)
IO-470-VO (6B, 8B, 9B, 15B, 16B)

| | **Compatible O-470 Models and Specifications** | O-470-G (1B, 7B, 9B, 10B)
O-470-GCI (1B)
O-470-J (1B, 8B, 8F, 11B, 11F, 18B)
O-470-K (1B, 17B, 17F, 27B, 29B–35B)
O-470-L (1B, 9B, 9F, 10B, 10F, 16B, 16F, 32B–37B, 38F, 39B–48B)
O-470-M (22B, 23B, 23D, 26B, 26C, 26D, 27B)
O-470-R (3B, 5B, 6B, 13B, 14B, 15B, 17B, 25B, 25F, 25K, 25M, 25U, 35B, 37B, 39B–58B, 60B–68B, 70B–81B)
O-470-S (1B, 2B, 2K, 3B–13B)
O-470-U (1B, 2B, 5B, 6B, 9B–14B, 14K, 17B, 18B, 18M, 19B–45B, 47B, 48B)

| | **Compatible IO-520 Models and Specifications** | IO-520-A (1B, 5B–7B, 9B, 12B, 14B, 20B–52B)
IO-520-D (1B, 2B, 7B, 9B–11B, 13B, 15B, 18C, 18D, 22B, 22C, 23B, 23M, 24B, 24M, 26B, 27B, 28C, 29B, 30B, 30U, 31B–35B, 39B–41B, 43B–151B, 153B–180B, 182B, 184B–197B, 199B–206B, 208B–215B)
IO-520-E (1B, 2B, 3B, 6B, 7B, 7M, 8B, 9B, 11B, 14B, 15B, 16B)
IO-520-F (2B–7B, 9B, 9K, 10B–13B, 13K, 13M, 13U, 16B–65B, 67B–77B, 79B–84B)
IO-520-J (1B, 2B)
IO-520-K (1B, 2B)
IO-520-L (1B, 3B–5B, 7B, 8B, 12B–60B)

| | **Compatible IO-550 Models and Specifications** | IO-550-D (1B–5B, 7B–47B, 49B–52B)
IO-550-E (1A, 1B, 3B, 6B, 7B, 8B, 9B)
IO-550-F (1B–21B, 24B–45B)
IO-550-L (1B, 3B–27B)

| | **Compatible TSIO-520 Models and Specifications** | TSIO-520-AF (1B, 2B, 3B, 5B)
TSIO-520-C (1B, 2B, 3B, 5B–11B)
TSIO-520-G (1B, 3B, 4B, 5B)
TSIO-520-H (1B, 4B–8B)
TSIO-520-M (1B, 3B, 4B, 6B–11B, 7NB)
TSIO-520-P (1B, 3B, 5B–9B)
TSIO-520-R (4B, 5A, 5B, 6A, 6B, 7A, 7B, 9B–15B) | | **Approval** | FAA-PMA | | **Brand** | Sky-Tec | | **Manufacturer** | Hartzell Engine Tech |

BROCHURES & DOCUMENTATIONS

List of Brochures

List of Documentation

Starter Adapter Maintenance Manual

VIDEO

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