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100-655112-000 – CMC Electronics HUD Mounting Tray Assembly
The CMC Electronics 100-655112-000 is a flight-critical, high-precision structural line replaceable unit (LRU) designed specifically as the primary mechanical mounting and alignment foundation for the Head-Up Display (HUD) subsystem within the Cockpit 4000 integrated avionics suite. Installed directly beneath the cockpit glare shield, this heavy-duty tray assembly holds the pilot's primary flight symbology optics, keeping them perfectly steady against continuous airframe vibration, landing impacts, and high-G combat maneuvers. By providing a low-deflection anchor point, the 100-655112-000 maintains perfect spatial alignment between the HUD combiner glass, the aircraft's longitudinal datum line, and the forward sensor arrays.
Manufactured by CMC Electronics (Esterline) to rigid military defense specifications, the 100-655112-000 is machined from a premium, stress-relieved aerospace aluminum alloy block. The tray assembly utilizes an advanced three-point kinematic mounting system equipped with high-precision micro-adjusting alignment pins and hard-anodized lock rings. This specialized geometry allows maintenance technicians to perform ultra-precise boresight calibrations, ensuring that the target symbol symbology matches the real-world horizon vector within fractions of a milliradian. The assembly is finished with a chemical conversion coating and an unreflective matte-black epoxy primer, eliminating optical glare from entering the pilot's forward field of view.
The CMC Electronics 100-655112-000 is essential for ensuring weapon system accuracy, pilot situational awareness, and regulatory compliance under military airworthiness standards. Because a HUD functions as a primary flight reference, any mechanical shifting or flexing of its base will directly compromise the accuracy of target aiming loops and navigation vectoring. For defense procurement logistics, military depot facilities, and field-line A&P technicians servicing advanced jet trainer configurations, selecting this fully trace-certified OEM mounting tray ensures flawless system integration and eliminates the structural micro-shifting faults linked to worn or non-PMA alternative hardware.
Key Features
Kinematic Three-Point Mount Design: Features independent, micro-adjustable alignment screws to enable precise physical boresighting of the optical unit against the airframe's reference axes.
Monolithic Machined Aluminum Substrate: Forged and CNC-milled from high-strength aerospace aluminum to combine exceptional torsional stiffness with a lightweight profile.
Anti-Reflective Matte Finish: Coated with a mil-spec, non-reflective black epoxy topcoat to eliminate secondary internal cockpit reflections that could disrupt night-vision or targeting systems.
Positive Quick-Release Locking Mechanics: Incorporates heavy-duty, captive dual-coupling clamp levers to permit rapid field extraction and replacement of the HUD optical unit without losing alignment parameters.
High-Frequency Vibration Isolation: Engineered with stiff structural load lines to shift the assembly's natural resonant frequency safely outside the operating frequency bands of the engine accessory pad.
Technical Specifications
Part Number: 100-655112-000
Component Type: HUD (Head-Up Display) Mounting Tray / Alignment Bracket Assembly
OEM Manufacturer: CMC Electronics Inc. (CAGE Code: 38441 / Esterline)
Avionics Suite Baseline: Cockpit 4000 System Architecture
Material Composition: 7075-T6 or 2024-T3 Premium Aircraft Aluminum Alloy (Exact proprietary grade must be verified via OEM manufacturing prints)
Surface Finish: Chemical Conversion Coating (MIL-DTL-5541) with Matte Black Epoxy Primer Topcoat
Boresight Adjustment Resolution: Accurate within sub-milliradian increments via integrated fine-pitch alignment threads
Locking Mechanism: Captive dual-hook tension levers with safety lock wire channels
Hardware Interface: Hardened stainless steel bushing inserts to prevent thread galling during repetitive installation cycles
Environmental Standards: Certified to survive high-G shock and random vibration spectra per MIL-STD-810E and RTCA DO-160D
Certification Status: Military Airworthiness Release and Material Traceability Profile Available
Aircraft Compatibility
Military Trainers & Light Attack Fleets: Beechcraft T-6B Texan II, Beechcraft T-6C, Beechcraft AT-6 Light Attack Aircraft.
Advanced Jet & Armed Reconnaissance Airframes: BAE Systems Hawk Mk51 / Mk51A, Hawk Mk66; KAI (Korea Aerospace Industries) KT-1C, KT-1T, KT-1P Series.
Note: Final component installation compliance, serial-number block variations, and matching HUD optical unit part numbers must be verified strictly by referencing the specific airframe Illustrated Parts Catalog (IPC), active Mechanical/Structural Control Manuals, or applicable military tech-order documentation.
Applications
HUD Optical Unit Securement: Functions as the primary fixed reaction anchor stabilizing the cockpit head-up display system against airframe stress.
Precision Boresight Datum Base: Provides the physical reference interface used to align forward-looking infrared (FLIR) cameras, radar vectors, and optical weapons sights with the cockpit display.
Why Choose 100-655112-000?
Sourcing a genuine, trace-certified CMC Electronics 100-655112-000 mounting tray assembly protects military fleets from catastrophic targeting errors and costly flight training delays. Substandard or unverified structural mount alternatives often exhibit minor dimensional variations across the alignment pins or use low-grade metals prone to structural deformation under high thermal gradients. If a HUD tray flexes even marginally during a high-G tactical pull-up maneuver, the flight path vector symbol will drift away from its real-world trajectory. This misalignment compromises weapons delivery calculations and increases the risk of pilot spatial disorientation during low-visibility approaches. Sourcing fully traceable OEM hardware eliminates structural micro-fretting, keeping flight symbology locked exactly where it belongs.
The structural performance of the CMC Electronics 100-655112-000 turns on the mechanical principles of kinematic constraint design and anisotropic stress isolation within a high-vibration cockpit environment. The assembly positions the HUD optical chassis using a precise arrangement of contact points that bound all six degrees of relative mechanical freedom without inducing internal over-constraint or structural binding. The monolithic base structure is CNC-milled from a single block of wrought aluminum alloy, ensuring consistent grain directionality and removing the microscopic shear-line weak points common to welded or stamped brackets.
When the airframe encounters high aerodynamic loads or intense runway braking deceleration, the resulting structural torque travels up through the fuselage bulkhead. The 100-655112-000 intercepts these forces, re-routing high bending moments through its heavy mounting flanges while keeping its top face perfectly flat. This stiffness controls structural deformation to within micro-radians, ensuring that the high-precision lenses inside the HUD continue to project flight metrics directly along the aircraft's true longitudinal datum line, preventing optical parallax and maintaining weapon system target tracking accuracy.
Note: The CMC Electronics 100-655112-000 is an ultra-critical structural alignment component. Dropping the assembly, scratching the precision-ground locating pins, or over-torquing the mounting bolts can warp the kinematic seating plane, ruining its alignment parameters and rendering the HUD system un-boresighted. Component installation, structural shimming, and subsequent laser alignment checks must be executed exclusively by authorized avionics structural technicians or certified defense depot facilities in strict accordance with the aircraft's Structural Repair Manual (SRM) and relevant Technical Order (T.O.) guidelines. Always verify the integrity of the locking lever retention pins and apply the specified safety lock wire during every installation sequence.
Documentation
FAA Dynamic Regulatory System Type Certificate Data Sheet - Hawker/Textron T-6 Series Platforms
MIL-STD-810E Environmental Engineering Considerations and Laboratory Tests Index
No direct standalone OEM engineering print or dimensional blueprint PDF download is publicly available for this proprietary military rotable hardware due to strict international defense security regulations and export control restrictions; all physical clearances and adjustment limits must be cross-referenced via a licensed CMC Electronics system integration publications subscription.
