350.003V

Fuel filtration role of the 350.003V filter pack

350.003V is an aircraft fuel filter pack used as a filtering element in fuel systems of heavy aviation equipment. The element is intended for fine cleaning of aviation fuels from mechanical impurities before fuel reaches sensitive fuel-system components. In helicopter service, this filter pack is associated with Mi-26 applications and the fuel supply system for D-136 engines and the auxiliary power unit. The part is not an independent filter housing. It is the internal replaceable or regenerable filtering assembly installed inside the main-line fuel filter body.

350.003V in Mi-26 fuel supply systems

The 350.003V filter pack is used in the low-pressure fuel supply lines of the Mi-26 helicopter, where fuel is cleaned before it is delivered further to the engines and auxiliary power unit. Its function is to protect downstream fuel equipment from mechanical contamination that may enter the fuel system during refueling, storage, maintenance or operation. Fuel cleanliness is especially important for injectors, pumps, regulating units and other precision components. If the filter pack is contaminated or damaged, fuel flow may be restricted, and the fuel system can show abnormal pressure drop or unstable operation.

Installation of the 350.003V element inside filter 8D5.886.528-1

The 350.003V is installed inside the aircraft main-line fuel filter identified as 8D5.886.528-1. The metal filter body or cup forms the external assembly, while the 350.003V filter pack is the internal filtering cartridge made for fuel cleaning. This distinction is important when ordering parts. A request for the complete filter assembly and a request for the internal filter pack are not the same. During replacement or maintenance, the filter body, seals, filter pack, seating surfaces and fastening elements should be checked together according to the aircraft maintenance documentation.

Regenerable construction of the 350.003V fuel element

The 350.003V filter pack is a regenerable element. This means it can be cleaned and reused if its condition remains within the limits allowed by maintenance documentation. Regeneration may include washing and ultrasonic cleaning, depending on the approved procedure and available service equipment. This design is practical for aircraft fuel systems because it reduces the need to discard the filtering element after every contamination event. However, reuse is acceptable only if the element is not mechanically damaged, deformed, clogged beyond recovery or affected by corrosion or other defects.

Fuel compatibility and filtering performance of 350.003V

The 350.003V filter pack is used with aviation kerosene grades such as T-1, T-2, TS-1 and RT. Its task is to remove mechanical particles from fuel while maintaining the required flow through the main-line filter. The element must provide stable filtration without creating excessive hydraulic resistance. If contamination builds up, pressure drop across the filter increases and fuel delivery may be affected. For this reason, the filter pack should be inspected, cleaned or replaced according to the maintenance schedule and actual contamination condition.

Identification and ordering of 350.003V

Before ordering 350.003V, it is important to confirm that the requirement is for the internal filter pack and not for the complete 8D5.886.528-1 fuel filter assembly. The aircraft type, fuel system location, installed filter housing and required documentation should be checked. For overhaul or maintenance supply, it may also be necessary to specify whether sealing rings or related consumable parts are needed together with the filter pack. The product may be referenced under the designations 350.003V and 350.003В, depending on Latin or Cyrillic catalog transcription.

Product Type: Aircraft fuel filter pack / fuel filter element
Designation: 350.003V
Alternative Designations: 350.003В
Function: Fine filtration of aviation fuel from mechanical impurities
Application / Where Used: Aircraft fuel systems
System / Installation Area: Main-line fuel filter, low-pressure fuel supply lines
Compatible Aircraft / Equipment: Mi-26 helicopter and related configurations
Compatible Engines / Units: D-136 engines; auxiliary power unit fuel supply system, depending on aircraft configuration
Installed In: Main-line fuel filter 8D5.886.528-1
Element Type: Regenerable filter pack
Working Medium: Aviation fuels T-1, T-2, TS-1, RT
Nominal Filtration Rating: 16 µm
Absolute Filtration Rating: 25 µm
Maximum Flow Capacity: 7500 L/h
Initial Hydraulic Resistance: Not more than 0.01 MPa / 0.1 kgf/cm²
Maximum Allowable Pressure Drop: 0.12 MPa / 1.2 kgf/cm²
Fuel Temperature Range: −60…+120 °C
Weight: 1.35 kg
Maintenance Feature: Can be cleaned and reused after regeneration, if permitted by maintenance documentation
Technical Documentation: Aircraft maintenance manual, fuel system documentation, parts catalog, manufacturer technical documentation

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.