8AT-9921-00

8AT-9921-00 Main rotor hub and hydraulic unit sling

8AT-9921-00 is a main rotor hub and hydraulic unit sling identified through the exact designation and specialist listings. Lifting the Mi-8 main rotor hub or hydraulic unit with a crane during maintenance. This page describes the specific item and does not copy specifications from equipment that merely looks similar.

The Mi-8AMT manual lists 8AT-9921-00 for lifting the main rotor hub and hydraulic unit. A specialist technical description identifies five 5 mm steel cables: all five are used for the rotor hub and three for the hydraulic unit. This distinction matters in search and procurement: the base number, letter index, suffix and model reference should agree with the applicable documentation or the marking on the available item.

Maintenance role of 8AT-9921-00

The product is used as ground support equipment. It is not a universal tool simply because another fixture performs a comparable task. Before use, maintenance personnel should confirm the approved task card, serviceability, attachment or connection points, and the permitted aircraft or component configuration.

The cables attach through cardan fittings and locking pins to approved eyebolts or hydraulic-unit lugs; these points must be checked before loading. When a value is absent from the located documentation, it is not replaced with a calculation or a specification from a neighbouring model. This keeps the page technically accurate and allows the customer to request a passport, drawing or test record separately.

Designation and compatibility checks

Before ordering, compare 8AT-9921-00 with the maintenance manual, ground-equipment catalog or delivery-set list. Also verify interfaces, working medium, load or pressure range, included accessories and periodic inspection requirements whenever those characteristics apply to this type of equipment.

Products linked within the same category may support the same aircraft family, but they are not substitutes. A jack, crane, trolley, valve or servicing control unit performs its own operation and must be used only in the documented configuration.

Confirmed and unconfirmed technical data

Purpose is confirmed by the Mi-8AMT manual; cable construction is from a specialist description and remains subject to the supplied passport. Unverified dimensions, mass, pressure, rated capacity or applicability are intentionally omitted. Where a reference value is shown, the text identifies its status and requires confirmation against the passport for the supplied unit.

Incoming inspection should check the identification marking, body and joint condition, completeness, fasteners, hoses, cables, locks and working elements as applicable. Operational readiness is established through records and the approved inspection procedure, not appearance alone.

A technical inquiry is more useful when it includes the manual or equipment-list page that names 8AT-9921-00, together with photographs of the marking and interfaces on the existing sample. This helps separate the base model from a suffix-specific execution and allows the delivery set to be agreed in advance. For lifting, pumping or pressure-control equipment, the request should also state the required current inspection or test documentation.

Before release to service, a new or stored item should pass the recipient’s approved incoming inspection. Mechanical fixtures require checks for deformation, corrosion, thread damage and locking parts. Hydraulic equipment requires confirmation of fluid compatibility, seal condition and leakage control. Valves and servicing panels require clean passages, correct connections and functional control checks. The operator’s documentation determines subsequent inspection intervals.

Ordering and supply of 8AT-9921-00

The card uses YOM 2026, Warranty: 6 Months and Pre-Order status. The existing WooCommerce price and stock state are preserved. A useful inquiry should include the exact designation, quantity, maintained aircraft or component, required delivery set and any need for a passport, certificate, drawing or test report.

More products are available in the Ground Support Equipment category. Internal links are provided for navigation between related maintenance items and do not claim interchangeability.

Aircraft reference: Mil Mi-8. It does not replace approved technical documentation.

Related products for category navigation: 8A-9903-00, 8AT-9801-00, 8AT-9915-00, 8AT-9802-00. They may support the same maintenance workflow but are not interchangeable.

Product Type: Main rotor hub and hydraulic unit sling

Designation: 8AT-9921-00

Alternative Designations: 8AT-9921-00; 8AT.9921.00; NVKV.304273.004; main rotor hub sling

Function / Application: Lifting the Mi-8 main rotor hub or hydraulic unit with a crane during maintenance.

Confirmed Technical Information: The Mi-8AMT manual lists 8AT-9921-00 for lifting the main rotor hub and hydraulic unit. A specialist technical description identifies five 5 mm steel cables: all five are used for the rotor hub and three for the hydraulic unit. The cables attach through cardan fittings and locking pins to approved eyebolts or hydraulic-unit lugs; these points must be checked before loading.

Data Verification Status: Purpose is confirmed by the Mi-8AMT manual; cable construction is from a specialist description and remains subject to the supplied passport.

Equipment Category: Aircraft ground support equipment

Estimated Lead Time: 90–120 days; subject to confirmation

Technical Documentation: Product passport, drawing, maintenance manual and delivery records 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.