381800-1005

LE SLAT ACTUATOR ASSY
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About this product
The 381800-1005 actuator assembly is the hydraulic rotary drive used to extend and retract the leading-edge slats on Boeing 737 Next-Generation series aircraft. Installed within each wing’s slat track, it converts pressurized hydraulic fluid into controlled rotary motion that slides the slat panels forward and aft, enabling high-lift performance during takeoff, landing, and low-speed maneuvers.
381800-1005 Datasheet
UOM: EA
Stock Location: Dubai
Hazardous Item: Non-Hazardous Item
Life Limited Part: No
Lead Time: Stock
Certification: Dual Release
8130/EASA Eligible: Yes
PRODUCT DESCRIPTION

381800-1005

  • Precision Position Control: Incorporates built-in limit switches or position sensors to verify exact slat extension angles, ensuring consistent aerodynamic performance and stall margin.

  • Corrosion-Resistant Construction: Machined from stainless-steel and anodized aluminum with environmental seals, the actuator resists moisture, deicing fluids, and salt spray for long service life.

  • Sealed Bearing Assemblies: Self-lubricating bronze or composite bearings minimize friction and maintenance requirements while operating within the slat track’s high-vibration environment.

  • OEM Form-Fit Replacement: Directly matches Boeing’s original dimensions, mounting interfaces, and hydraulic connections, allowing straightforward drop-in swaps during maintenance and MRO cycles.


  • Extending leading-edge slats for enhanced wing lift during takeoff and approach.

  • Retracting slats flush with the wing for cruise-speed efficiency.

  • Supporting go-around and missed-approach procedures by re-deploying slats under command.

  • Integration with slat control valves and the flight control computer for automatic high-lift management.


  • How is the slat position feedback provided?

Internal limit switches or sensors generate discrete signals at full-extend and full-retract positions, which feed into the flight control data concentrator.

  • Is this actuator life-limited?

No, it is not life-limited but must undergo periodic overhaul (OH) to restore seals, bearings, and gearbox tolerances per OEM instructions.

  • What maintenance does the 381800-1005 require?

During scheduled C-checks, inspect for hydraulic leaks, verify sensor operation, and bench-test actuation torque and travel range before re-installation.


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