ME-301B

ME-301B Electric Speed Sensor

ME-301B is an aviation electric speed sensor identified by its complete execution marking. Procurement documentation identifies ME-301B, Cyrillic МЭ-301Б, as a sensor for an electric speedometer and cites assembly reference 432.44.003sb-1. Published descriptions associate the sensor with SP-110 and SP-106 electric speedometer equipment, but the exact vehicle or aircraft installation of the offered unit requires its passport. The designation must be treated as the primary ordering reference because products from the same family can differ in range, electrical interface, calibration, connector, mounting arrangement or system role. External resemblance is not evidence of interchangeability. Selection should be made from the product passport, the aircraft illustrated parts catalogue and the approved maintenance documentation for the exact installation.

Operating function and signal path

Mechanical rotation from the monitored drive is converted into an electrical signal used by a compatible remote speed indicator. The unit is a sensing element within a larger aircraft circuit; it is not a complete indicator, controller or protective system by itself. Its output is interpreted by compatible receiving equipment, so supply characteristics, polarity or phase, connector pinout, load and calibration must match the documented configuration. Drive ratio, coupling, signal characteristic, wiring and calibration must match the receiving speedometer and the installation drawing. A general explanation of the underlying measurement class is available in this technical reference. That general reference explains the principle only and does not replace product-specific documentation.

Aircraft and equipment application

ME-301B is catalogued with electric speedometer equipment; aviation eligibility must be confirmed for the exact installation and not inferred from the category alone. Where an aircraft or engine family is named, the statement identifies a documented installation context rather than universal applicability to every modification. The exact equipment set, production series and installed connector must be checked before ordering. Related products in the aviation sensors category are provided for catalogue navigation. The DSSP5K card is another same-category reference, but the link does not state that the two units are interchangeable or perform the same function.

Installation and maintenance checks

Before installation, technicians should compare the nameplate, suffix, connector, mounting faces and available acceptance record with the approved requirement. The housing, pressure ports or mechanical input, electrical contacts and sealing features should be inspected without altering calibration. Wiring continuity, insulation and output checks must follow the passport limits for this execution. Do not apply a supply voltage, pressure, acceleration, rotation or test signal taken from a neighbouring model. Storage condition and preservation date should also be reviewed when the unit has remained in stock for an extended period.

After installation, functional testing must be performed as part of the complete aircraft circuit, using approved test equipment and the limits defined by the maintenance manual. A correct bench response alone does not prove that the installation wiring, pneumatic lines, mechanical linkage or receiving unit is serviceable. Any discrepancy should be traced without adjusting sealed elements unless the repair documentation expressly authorises that procedure. The maintenance record should identify the fitted designation and serial number so that later troubleshooting does not confuse adjacent family executions.

Ordering ME-301B

An enquiry should state ME-301B, the required condition, quantity, aircraft or equipment context and the documentation needed with delivery. If the installed marking is incomplete, provide a clear photograph of the label, connector and mounting arrangement together with the relevant catalogue reference. Aviamisto can compare these identifiers before supply, but final installation approval remains with the operator or maintenance organisation. Technical Details below separates confirmed data from values that still require passport verification. Same-category cross-sells are navigation aids only; they must never be interpreted as approved replacements.

For a traceable quotation, also state whether a new-production unit, preserved stock item or another documented condition is acceptable. Requested acceptance documents, test records and packing requirements should be agreed before order placement.

Product Type: Electric speedometer sensor

Original Designation: МЭ-301Б

Assembly Reference: 432.44.003sb-1 / 432.44.003сб-1

Associated Equipment: Published references cite SP-110 and SP-106 speedometers

Range / Signal: Confirm from the ME-301B passport

Exact Installation: Confirm from approved equipment documentation

Primary Designation: ME-301B

Original Cyrillic Designation: МЭ-301Б

Alternative Designations: ME-301B; ME301B; ME 301B; МЭ-301Б; МЭ301Б; 432.44.003sb-1; 432.44.003сб-1

Manufacturer: Not confirmed for the offered unit

Aircraft / Equipment Application: According to the exact aircraft, engine or equipment documentation stated above

Installation Position: Confirm from the illustrated parts catalogue and maintenance manual

Connector / Pinout: Confirm from the passport for the exact execution

Interchangeability: Not established by family name or external appearance

Documentation: Product passport and applicable installation / maintenance documentation

Ordering Check: Full marking, suffix, connector, required condition and documents

Acceptance Control: Compare marking, interfaces and test record with the approved requirement before installation

Data Rule: Unlisted values must be confirmed from the exact passport and not copied from another execution

Related Products: Same-category links are navigation only and do not state interchangeability

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.