The CW APEX SP Series. A compact sensor helping keep critical US aircraft in the air

CW APEX SP Series tilt sensors bring single-axis precision monitoring to aerospace and defense platforms that demand rugged reliability. Anyone holding Curtiss-Wright Corp. stock (NYSE: CW, ISIN US2315611010) should know this product.

By Elena Vance, ad hoc news Accessories & Components Desk. Reviewed July 08, 2026, 12:32 AM ET. Details in the imprint.

APEX SP Series tilt sensors from CW sit almost unnoticed along a beam or bracket, but on a cold morning at an airfield in Arizona you can see their compact housings catching the light as ground crews move around a maintenance bay. These single-axis inclinometers quietly feed live angle data into safety-critical systems. One engineer from Curtiss-Wright, Mark Jensen, described them as "the small parts that keep the big parts honest" during a recent technical briefing.

Rugged tilt sensing for harsh environments

The APEX SP Series is a family of rugged single-axis tilt sensors designed for use in demanding aerospace, defense, and industrial applications, where reliable inclinometer readings are needed to monitor platforms, booms, and structural elements. Each unit measures angular position relative to gravity and provides an electrical output signal that control electronics can interpret in real time. These sensors are built to survive shock, vibration, and wide temperature ranges, making them appropriate for aircraft, ground vehicles, and heavy machinery.

According to Curtiss-Wright’s official product information, APEX SP sensors offer high accuracy and long-term stability, with models capable of maintaining performance across extended operating lifetimes in mission-critical systems. The housings are typically sealed and corrosion-resistant, allowing installation on exposed structures where dust, moisture, and hydraulic fluids are present. In practice, that means a unit bolted to the underside of a vehicle chassis can keep reporting accurate tilt even after years of wash-downs, road spray, and pressure-cleaning on the maintenance line.

Targeting aerospace and defense programs

Curtiss-Wright positions the APEX SP Series for aerospace and defense programs that need precise tilt measurement for safety and control functions. These sensors can support functions such as monitoring the deflection of aircraft wings or control surfaces, detecting the angle of ramps or doors on military transports, or measuring platform tilt on radar and communications systems. In these use cases, engineers integrate the sensor outputs into flight-control computers, mission systems, or ground-station logic, enabling automated alerts or control actions if tilt exceeds defined thresholds.

Because Curtiss-Wright has a large installed base of systems across US and allied fleets, an inclinometer line like APEX SP offers repeat revenue through spares and retrofits. Replacement sensors become part of regular maintenance cycles, sitting alongside actuators and control electronics on procurement lists. APEX SP units slot into this ecosystem as standard components, benefiting from existing qualification and certification work that has already validated Curtiss-Wright sensors for use on specific platforms.

Compact form factor, flexible integration

One reason engineers favor the APEX SP Series is its compact form factor. Curtiss-Wright’s documentation highlights small, lightweight housings that simplify installation where space and mass budgets are tight. The sensors can be mounted directly to structural elements using standard fasteners, and wiring is routed into sealed connectors or potted cable entries. For a maintenance tech crouched under a fuselage, that translates into straightforward replacement without reworking surrounding hardware.

Electrically, APEX SP sensors support typical aerospace and industrial interfaces so system designers can feed their outputs into existing control modules. Depending on the variant, that can include analog voltage or current outputs, and sometimes digital signaling integrated into broader electronics. This compatibility is key for retrofits, where the goal is to drop in new sensors while leaving legacy control computers in place. Curtiss-Wright’s engineering teams, led on the sensor side by managers like Laura Chen, often work directly with OEMs to tune sensor performance and interface behavior for specific programs.

Component role in the Curtiss-Wright portfolio

Curtiss-Wright Corp. is best known to many US investors for its broad aerospace and defense portfolio, ranging from flight control systems to valves and actuators. Within this mix, the APEX SP Series represents a specialized component line in the motion and position sensing segment, one of several sensor families that provide recurring demand from fleet operators and OEMs. For program managers, using a sensor from a large, established supplier can simplify certification and logistics, since qualification data and field experience are already available.

In its investor communications, Curtiss-Wright regularly emphasizes strong positions in niche components that support long-lived platforms. Tilt sensors like APEX SP may not draw headlines, but they fit the pattern of durable, high-reliability hardware tied to multi-decade aerospace and defense programs. CW stock (NYSE: CW) trades in US dollars and reflects this mix of larger systems and component-level revenue. For investors, understanding products such as APEX SP helps connect abstract segment descriptions in filings to concrete hardware that keeps aircraft and vehicles operating safely.

Key facts on APEX SP Series tilt sensors

• Product: APEX SP Series tilt sensors
• Manufacturer: Curtiss-Wright Corp.
• Category: Accessories & components
• Launch: Available as part of Curtiss-Wright’s motion and position sensor portfolio; specific introduction dates vary by model.
• MSRP / Price: Pricing is typically project-based and quoted in USD for US aerospace and defense customers.
• Availability: Supplied globally through Curtiss-Wright’s sales channels, with significant usage in US and allied aerospace and defense programs.
• Target audience: Aerospace and defense OEMs, systems integrators, and heavy industrial equipment manufacturers requiring reliable single-axis tilt measurement.
• Standout / USP: Rugged single-axis inclinometer design optimized for harsh environments and long-term stability on mission-critical platforms.

This article was AI-assisted and editorially reviewed. Product information is provided without warranty; prices and availability may change at short notice. Not investment advice and not a buy or sell recommendation. Securities trading carries risks up to total loss.