8ДО.447.021-40-66

8ДО.447.021-40-66 hose for the Mi-26

8ДО.447.021-40-66 is a PTFE hose assembly with permanently attached fittings recorded in the supplied hose list for the Mil Mi-26 heavy transport helicopter and the Mi-26T modification. The exact source designation is retained, while 8DO.447.021-40-66 is provided as a Latin search form.

The assembly provides a flexible connection within an onboard pipeline and can accommodate routing and operational vibration. The source does not identify the exact connected units, installation zone or flow direction, so those details are not reconstructed from other Mi-26 hoses.

Hose construction and confirmed working media

The source defines the construction as: PTFE hose assembly with permanently attached fittings. Technical reference: TU 6-05-041-659-80. Listed working media: Air; gaseous nitrogen; oils MK-8, MK-8P, MS-8P, MS-20S, MK-22, AMG-10, VNII NP 50-1-4f, 36/1 KU-A, VNII NP-7, MN-7.5, IMP-10 and transformer oil TK; fluids 7-50S-3 and NGZh-4; fuels T-1, TS-1, T-2, T-6, RT and T8V. These values belong to the documented group containing this exact row and are reproduced without adding unverified characteristics.

For T8V fuel, the supplied source states pressure not exceeding 110 kgf/cm². Exact dimensions, mass, minimum bend radius, operating temperature, connection thread and fitting orientation are not provided for this designation. They must be checked in the product passport, drawing or applicable helicopter documentation.

Identification and standard for 8ДО.447.021-40-66

The supplied list does not add a separate OST reference to this designation. The Mi-26T list records 1 pc for this designation. This is a source-list quantity and is not an Aviamisto stock balance.

All dots, hyphens, digits and letter indices should be preserved in an inquiry. Hoses that look similar may differ in diameter, length, reinforcement and fitting configuration. A common construction type or working-medium list does not establish interchangeability.

Verification before Mi-26 installation

Before installation, check the marking, flexible body, ferrules and fittings for cracking, kinking, corrosion, contamination, damaged threads or storage defects. Compare the removed sample and supplied assembly by length, diameter, connection dimensions and relative orientation of the ends.

Routing, permitted bend, tightening requirements and cleanliness limits are governed by current documentation for the applicable Mi-26 modification. This product card supports identification, but it does not replace the product passport, illustrated parts catalogue or maintenance manual.

Incoming inspection should also compare the manufacturing date, protective caps, internal cleanliness and accompanying documents with the physical marking. Storage history and eligibility for installation must be assessed under the operator or repair facility procedure. A representative catalogue photograph does not confirm the condition of a particular supplied unit.

If the original marking is incomplete, record the removal location, fitting orientation and neighboring pipeline elements before disassembly. That evidence can help distinguish closely related executions, although the final selection still depends on controlling documentation. Dimensions, pressure limits or service life from another product in this category must not be transferred to this designation.

Ordering 8ДО.447.021-40-66 and related hoses

8ДО.447.021-40-66 is listed in the Aviamisto Hoses for Mi-26 category and is offered on a pre-order basis. State the complete designation, required quantity, helicopter modification and documentation requirements in the inquiry.

Related positions: 8ДО.447.021-40-74, 8ДО.447.024-40-62, 8ДО.447.033-40-29, 8ДО.447.034-40-49. They share an Mi-26 source-list application and are linked for catalogue navigation only. They are not replacements, equivalents or interchangeable assemblies unless the controlling technical documentation explicitly confirms that relationship.

Product Type: PTFE hose assembly with permanently attached fittings

Designation / Part Number: 8ДО.447.021-40-66

Alternative Designations: 8ДО.447.021-40-66; 8DO.447.021-40-66; 8DO.447.021 40 66

Normal: 8ДО.447.021-40-66

OST: No separate OST recorded in the designation

Technical Specification / Type: TU 6-05-041-659-80

Aircraft Type: Mi-26 / Mi-26T

Application: Hose from the supplied Mi-26T list; exact installation position requires aircraft documentation

Additional Source Reference: Not specified

Working Medium: Air; gaseous nitrogen; oils MK-8, MK-8P, MS-8P, MS-20S, MK-22, AMG-10, VNII NP 50-1-4f, 36/1 KU-A, VNII NP-7, MN-7.5, IMP-10 and transformer oil TK; fluids 7-50S-3 and NGZh-4; fuels T-1, TS-1, T-2, T-6, RT and T8V.

Pressure Note: For T8V fuel, the supplied source states pressure not exceeding 110 kgf/cm².

Quantity in Supplied List: 1 pc; not a stock balance

Dimensions: Reliable data not found in the supplied materials or open sources

Mass: Reliable data not found in the supplied materials or open sources

Interchangeability: Not confirmed; related positions are not replacements

Condition: New

Warranty: 6 Months

YOM: 2026

Stock Status: Pre-Order

Technical Documentation: Supplied Mi-26 / Mi-26T lists, product passport and helicopter documentation when 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.