ACHS-1k

The AChS-1K Aircraft Clock (Red Illumination) is a mechanical onboard timekeeping instrument designed for continuous operation in aircraft and helicopter cockpits. The unit provides stable display of current time and allows accurate measurement of elapsed flight time, which is essential for flight operations, navigation control, and mission time recording. The red illumination version is specifically intended for night and low-light cockpit environments, ensuring clear readability without disturbing pilot night vision.

The clock features a daily accuracy of ±20 seconds under normal climatic conditions and a power reserve of not less than three days from a single full winding, with a recommended winding interval of once every two days. The AChS-1K operates with a 27 V DC heater supply and incorporates a precision mechanical movement with 25 jewels for stable long-term performance. Compact dimensions, controlled weight, and resistance to vibration and environmental influences make this clock suitable for transport and utility aircraft and helicopters of Soviet and Russian origin operated in demanding service conditions.

Category: Aircraft instruments
Product name: AChS-1K Aircraft Clock (Red Illumination)
Alternative reference: AChS-1
Type: Mechanical aircraft clock with elapsed time function
Function: Display of current time and measurement of elapsed flight time
Application: Used on aircraft and helicopters of Soviet and Russian origin
Associated systems: Onboard instrumentation system, cockpit lighting system
Daily rate accuracy: ±20 seconds per day under normal climatic conditions
Power reserve: Not less than 3 days from one full winding
Winding interval: Once every two days
Heater supply voltage: 27 V ±2.7 V DC
Number of jewels: 25
Balance oscillation period: 0.4 s
Weight: Not more than 655 g
Overall dimensions: 85 × 91.4 × 91.4 mm
Operating conditions: Normal climatic conditions: +20 ±5 °C, relative humidity 65 ±15%
Installation location: Instrument panel (cockpit)
Construction: Mechanical clock mechanism with integrated elapsed time counter and red illumination
Mounting: Panel-mounted installation
Documentation: Test report / Form 1 / Certificate on request
Condition: New / Overhauled / Serviceable
Warranty: 6 months standard (extended available)
Country of origin: Depending on production batch
Packaging: Individual export packing
Logistics: Worldwide shipping, export documentation, inspection, and professional packing 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.