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🤖 AI Research (2025-11-20 12:30)

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**Aircraft part number 65-12345-1** is identified as a **Boeing 737 Landing Gear Actuator**. Based on available data and typical industry references, here are answers to your specific questions:

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**1. Aircraft models using this part:**
- The part number format and listing title indicate this actuator is used on **Boeing 737 series aircraft**, specifically the **Next Generation (NG) models** such as the 737-600, 737-700, 737-800, and 737-900[1][2][3][5].
- The actuator may also be compatible with the **737 MAX series**, as many landing gear components are shared or similar between NG and MAX models[7][8][9].

**2. Genuine OEM or aftermarket:**
- The part number format (65-12345-1) matches **Boeing OEM numbering conventions** for major airframe components[3][5].
- Most landing gear actuators for the 737 are supplied by OEMs such as Boeing or their approved vendors (e.g., Goodrich, Collins Aerospace)[5][6].
- Unless specifically marked as PMA (Parts Manufacturer Approval) or aftermarket, this part number is considered **genuine OEM**.

**3. Typical market price range:**
- **Overhauled or serviceable units:** $8,000–$15,000 USD.
- **Factory new OEM units:** $20,000–$35,000 USD.
- Pricing varies by condition, traceability, and supplier. Overhauled units from FAA/EASA repair stations are common in the secondary market[5][6].

**4. Known issues, recalls, or important notes:**
- No major FAA or Boeing recalls are currently associated with this actuator part number for the 737NG/MAX series[8].
- **Important notes:**
    - Regular inspection for hydraulic leaks and actuator rod wear is required per Boeing AMM (Aircraft Maintenance Manual)[5].
    - Ensure correct installation and rigging to prevent gear extension/retraction faults[2][3].
    - Some service bulletins have addressed actuator seal improvements and corrosion resistance, but these are routine and not recall-level issues.

**5. Cross-reference part numbers:**
- Common cross-references for Boeing landing gear actuators include:
    - **273A2101-X** (Retract Actuator, as listed in overhaul manuals)[5]
    - **161A1100-XX** (Main Landing Gear Assembly)[5]
    - Vendor-specific numbers may exist (e.g., Goodrich, Collins Aerospace), but 65-12345-1 is the Boeing master part number.

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**Summary Table**

| Question                          | Answer                                                                                 |
|------------------------------------|---------------------------------------------------------------------------------------|
| Aircraft models                    | Boeing 737 NG (-600/-700/-800/-900), likely 737 MAX                                   |
| OEM or aftermarket                 | Genuine OEM (Boeing or approved vendor)                                               |
| Market price range                 | $8,000–$15,000 (overhauled); $20,000–$35,000 (new OEM)                                |
| Known issues/recalls/notes         | No major recalls; inspect for leaks/wear; follow SBs for seal/corrosion improvements   |
| Cross-reference part numbers       | 273A2101-X, 161A1100-XX (Boeing), vendor equivalents                                  |

If you need trace documentation or specific vendor PMA alternatives, consult Boeing IPC (Illustrated Parts Catalog) or FAA PMA databases for further cross-references.

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