49-170-11

SLAT
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About this product
The 49‑170‑11 Slat and Flap Control Computer is the avionics module responsible for governing the extension and retraction sequences of both leading‑edge slats and trailing‑edge flaps on Airbus A320‑series aircraft. It receives pilot lever commands and air data inputs such as airspeed and angle of attack, then computes and issues precise valve‑control signals to hydraulic actuators, ensuring synchronized, smooth wing high‑lift operations.
49-170-11 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

49-170-11

  • Synchronised High‑Lift Deployment: Coordinate slat and flap movements to achieve optimal aerodynamic lift across different flight phases, preventing asymmetrical deployment.

  • Adaptive Airspeed Protection: Incorporates airspeed and aircraft attitude data to inhibit slat/flap extension or command automatic retraction at unsafe speeds, safeguarding wing integrity.

  • Built‑In Fault Detection: Continuously monitors internal circuits and actuator feedback, providing real‑time fault reporting to the cockpit and enabling prompt maintenance actions.

  • Modular, Maintainable Architecture: Field‑replaceable cards and standard ARINC connectors simplify bench testing and module swaps, minimizing aircraft downtime during maintenance.


  • Provides automatic retraction protection at high speeds or in malfunction scenarios.

  • Interfaces with pilot lever inputs, air data computers, and hydraulic control valves.

  • Supports maintenance diagnostics by logging fault codes and actuator position feedback.

  • Employed in retrofit and service‑life extension programs to upgrade legacy SFCC units.


  • What does the inspected (INSP) condition indicate?

The unit has been fully tested, calibrated, and verified against OEM specifications to ensure proper operation.

  • How does the SFCC prevent overspeed damage?

It uses real‑time airspeed and angle‑of‑attack data to inhibit or reverse slat/flap movement if the aircraft exceeds safe deployment speeds.

  • Is the SFCC replaceable in the field?

Its modular design with ARINC‑standard connectors allows for straightforward bench testing and module replacement, reducing MRO turnaround times.


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