8D0.447.021-40-74

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 8D0.447.021-40-74

The supplied list does not add a separate OST reference to this designation. The Mi-26T list records 2 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 8D0.447.021-40-74 and related hoses

8D0.447.021-40-74 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: 8D0.447.024-40-62, 8D0.447.033-40-29, 8D0.447.034-40-49, 8D0.447.021-70-110. 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.