7001747H04 - UTC Aerospace Collins Windshield Wiper Electronic Control Unit

7001747H04 – UTC Aerospace Collins Windshield Wiper Electronic Control Unit

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The UTC Aerospace Collins 7001747H04 is a flight-critical, OEM windshield wiper electronic control unit engineered specifically for the independent pilot and co-pilot rain protection systems on the Boeing 787 Dreamliner series. In modern commercial air transport operations, maintaining absolute optical clarity through the flight deck windshield panels during low-visibility taxicab operations, final approaches, and high-precipitation departures is essential to operational safety. Unlike legacy aircraft that utilize basic mechanical gearboxes and rheostat-driven DC motors, the 787 features an advanced, electronically commutated "more-electric" wiper architecture. The 7001747H04 acts as the intelligent solid-state interface that translates pilot commands from the overhead control panel into precise multi-speed motor oscillations and synchronized swept movements.

Operating as a localized power management and signal processing module, this electronic control unit directly regulates the drive frequencies sent to the wiper motor converter assembly. It processes digital commands to govern multiple operating modes—including intermittent delay, low speed, and high speed—while continuously monitoring the angular position of the wiper arm assembly. Additionally, the unit coordinates active dynamic braking and executes the off-pattern parking sequence, which mechanically parks and stows the wiper blades away from the aerodynamic airflow when the system is selected off, minimizing parasitic drag and reducing flight deck boundary-layer noise.

For commercial fleet operators, maintenance directors, and avionics procurement specialists, installing a genuine factory-certified 7001747H04 module is an absolute requirement for ensuring complete system airworthiness and type certificate conformity. Sourcing authentic OEM control units protects the aircraft's sensitive solid-state power distribution systems from unwanted electrical feedback, guarantees full integration with central maintenance computers, and ensures the windshield wiper system performs flawlessly under heavy aerodynamic wind loads, preventing expensive dispatch delays and unpredicted Aircraft-on-Ground (AOG) events.

Key Features

• Solid-State Digital Logic Control: Utilizes advanced microcontroller circuitry to precisely interpret cockpit switch selections and manage real-time motor drive commands without mechanical relays.

• Active Dynamic Braking & Off-Pattern Parking: Provides instantaneous electronic braking control to slow the wiper blade at the end of each sweep cycle and cleanly stow the arm array outside the primary airflow path.

• Closed-Loop Position Feedback Integration: Designed to interface with internal motor sensors (such as Hall-effect or optical encoders) to continuously track sweep angles and prevent mechanical over-travel or window frame impact.

• Integrated Electromagnetic Shielding: Enclosed within an optimized housing configured to suppress electromagnetic interference (EMI) and high-frequency emissions, protecting neighboring avionics and flight control buses.

• Thermal Overload Protection Logic: Features embedded thermal monitoring circuitry that automatically scales back or isolates output drive currents if internal temperatures or motor resistance thresholds exceed safe limits, preventing catastrophic hardware failures.

• Ruggedized Environmental Packaging: Printed circuit board assemblies (PCBAs) are completely covered with specialized conformal coating to shield sensitive electronic components from ambient flight deck moisture, thermal cycling, and vibration-induced stress cracking.

Technical Specifications

• Part Number: 7001747H04

• Component Type: Windshield Wiper Electronic Control Unit (ECU) / Controller

• OEM Manufacturer: UTC Aerospace Systems / Collins Aerospace (an RTX Company)

• CAGE Code: 73030

• Input Voltage Ratings: 115 VAC / 28 VDC (Nominal system inputs derived from aircraft solid-state power distribution buses; exact pin-outs must be verified via the proprietary OEM Component Maintenance Manual)

• Housing Material: Structural aerospace-grade aluminum alloy chassis (6061-T6 or equivalent specification)

• Finish: Clear chemical conversion coating or specialized anodized surface treatment for premium corrosion protection

• ATA Chapter: ATA 30-40 (Ice and Rain Protection – Rain Protection / Wipers)

• ECCN: 9A991.d

• Certification Status: FAA Form 8130-3 / EASA Form 1 Dual Release or OEM Certificate of Conformance (CoC) required for return-to-service authorization

Aircraft Compatibility

• Boeing 787-8 Dreamliner Series

• Boeing 787-9 Dreamliner Series

• Boeing 787-10 Dreamliner Series

• Note: The specific aircraft model Illustrated Parts Catalog (IPC) or MyBoeingFleet effectivity portal remains the final, absolute authority for part number verification, configuration control, and serial-number compatibility.

Applications

• Primary Flight Deck Rain Protection: Regulates the automated power and cycle configurations for the driver and observer windshield wiper assemblies during all phases of ground and flight operations.

• Aerodynamic Drag Elimination Management: Executes the specialized high-torque reverse stowing sequences required to park the wiper blade profile flat against the forward fuselage fairing lines.

• Avionics System Fault Reporting: Communicates system status and component health tracking to the aircraft's central maintenance computers and onboard Engine Indicating and Crew Alerting System (EICAS).

Why Choose 7001747H04?

Selecting the genuine OEM Collins Aerospace 7001747H04 ensures absolute compliance with strict FAA and EASA airworthiness mandates. In modern aircraft systems, structural components and flight deck controllers interact directly with centralized digital network buses. Sourcing uncertified components or utilizing third-party modules can lead to communication dropouts, command synchronization errors, or high-amplitude voltage feedback spikes. If a wiper controller behaves erratically at high Mach airspeeds, the blade can lift from the glass surface, leading to severe slip-stick chattering, mechanical linkage failure, or expensive scratching of the specialized glass plies. Sourcing an authentic, factory-traceable 7001747H04 control unit through Airparts.aero guarantees smooth, predictable line maintenance, preserves the integrity of your flight deck's automated rain protection layout, and secures maximum dispatch reliability across your commercial fleet.

The operational architecture of the 7001747H04 windshield wiper electronic control unit centers on closed-loop digital processing and solid-state power switching to counter the extreme aerodynamic loads and variable hydrodynamic film coefficients encountered on widebody transport aircraft. Embedded within the aircraft's more-electric system, the controller utilizes space-vector pulse-width modulation (PWM) to regulate current distributions to the brushless wiper motor. By continuously polling high-resolution positional telemetry from internal Hall-effect sensors or optical encoders, the module executes a real-time feedback loop that dynamically calculates the wiper arm's angular velocity and instantaneous stroke angle. This precise management ensures the unit automatically compensates for boundary-layer compression and cross-wind pressure differentials acting against the multi-layered glass, completely eliminating high-frequency blade chatter and slip-stick phenomenon. Power conversion and directional control are accomplished via an integrated H-bridge metal-oxide-semiconductor field-effect transistor (MOSFET) configuration that supports smooth acceleration curves and instant active dynamic braking for precision off-pattern stowing. To isolate these heavy switching currents from sensitive flight deck data streams, the multi-layer printed circuit board assembly (PCBA) is enclosed in an anisotropic electromagnetic-shielded, surface-anodized aluminum chassis, minimizing thermal resistance while ensuring absolute signal integrity.

Note: The 7001747H04 Windshield Wiper Electronic Control Unit is a flight-critical, electrostatic discharge (ESD) sensitive avionics component. Technicians must utilize approved grounding straps and static-dissipative transport packaging during all handling, testing, and installation tasks to prevent sub-critical latent microcircuit damage. Before plugging the unit into the airframe harness, inspect the multi-pin electrical interface for signs of pin misalignment, socket deformation, or fretting corrosion. Installation, system rigging, and subsequent operational diagnostic checkouts must be executed exclusively by FAA-certified avionics technicians or authorized MRO stations in strict accordance with the current Boeing 787 Aircraft Maintenance Manual (AMM) Chapter 30-40. Verify that the hardware modification standard and embedded software configuration are fully compliant with all applicable carrier service bulletins prior to authorizing final return-to-service logs.

Documentation

No public-facing OEM or regulatory documentation was located for this part. Please cross-reference this part number within the official Boeing MyBoeingFleet technical portal or consult the current engine/airframe-specific Illustrated Parts Catalog (IPC) or Component Maintenance Manual (CMM) for official maintenance testing and wiring schematics.