MSL-3-2s

MSL-3-2S (also referenced as MSL-3F-2S in some documentation) is a rotating lamp-type aircraft signal beacon designed for external visual marking of helicopters and ground-based objects during night operations and in low-visibility conditions. The beacon produces high-intensity red flashing light that significantly improves aircraft visibility and operational safety in darkness, fog, rain, and adverse weather conditions.

The unit operates from a standard 27V DC onboard power supply and is equipped with two SM3 28-60 incandescent lamps installed on a rotating optical platform. The light is transmitted through a red glass filter, forming a powerful and clearly recognizable warning signal visible at long distances. The internal electromechanical drive ensures stable rotation and uniform 360-degree light distribution.

MSL-3-2S is widely used on Mi-8, Mi-17, Mi-171 helicopters as an external anti-collision and warning beacon. It is also suitable for ground safety and obstruction lighting on masts, towers, airport infrastructure, and industrial facilities located near flight zones.

The beacon features a compact and vibration-resistant design, making it suitable for continuous external installation on aircraft fuselage and structural elements. Due to its robust construction, simple mounting system, and reliable operating characteristics, it is well suited for long-term service under difficult environmental conditions.

The product can be supplied in New, Overhauled, or Serviceable condition, with optional test report, Form 1, and Certificate of Conformity. Worldwide shipping, export documentation, packing, and pre-shipment inspection are available upon request.

Category: External aircraft lighting / Signal beacon
Product name: Rotating signal beacon MSL-3-2S
Alternative reference: MSL-3F-2S
Type: Flashing signal lamp, rotating, lamp-type
Function: Visual warning and aircraft visibility
Application: Mi-8 / Mi-17 / Mi-171 helicopters; obstruction lighting for ground structures
Light colour: Red, flashing
Light source: 2 × SM3 28-60 incandescent lamps
Supply voltage: 27 V DC
Flash rate: Approx. 50–108 flashes per minute
Operating temperature range: –60 °C to +60 °C
Construction: Base, rotating platform with lamps, red glass filter, electromechanical drive, connector
Mounting: External mounting via base (3-screw mounting), plug-type electrical connector
Shock and vibration resistance: Designed for helicopter external installation
Dimensions: Approx. 152 × 120 × 102 mm
Weight: ≤ 1.0 kg
Operating conditions: Outdoor use, night and low-visibility operation
Condition: New / Overhauled / Serviceable
Documentation: Test report / Form 1 / Certificate on request
Warranty: 6 months standard (extended available)
Country of origin: Depending on production batch
Packaging: Individual export packing
Logistics: Worldwide shipping, export documentation, packing, and inspection available

All shipments are carried out from our international warehouse in Dubai (UAE), as well as from our partners’ remote warehouses.

In Stock — items available in stock at the Dubai warehouse are dispatched within 5–10 business days after receiving 100% prepayment.

Remote Stock — items available at our partners’ remote warehouses are supplied within an average of 30–45 business days after receiving 100% prepayment.

Pre-Order — made-to-order products are manufactured and delivered within an average of 45–60 business days. Payment terms: 50% advance payment to start production, with the remaining 50% paid before dispatch from the Dubai warehouse after full readiness for shipment.

Returns & Changes (Restocking Fee)
For selected items, a RESTOCKING FEE of 10% may apply in case of return, order cancellation, or changes to the order specifications. This condition applies only to certain products and is confirmed at the order approval stage.

Warranty
All products are covered by a standard 6-month warranty.
Extended warranty is available upon request and is agreed individually; it may affect the final product price.