Build to Spec

A3i Systems offers a unique Build-to-Spec capability, distinguishing us as a product development and engineering services company where our services are an integral part of our product development process. This end-to-end solution means we take a project from initial concept and design all the way through to certification and manufacturing.

Proven Track Record

Our team leverages over 20 years of experience in aerospace product development and certification to deliver full and partial lifecycle certification services to global customers. We have a proven track record of designing, developing, and certifying aerospace products that are currently flying in thousands of aircraft worldwide.

20+
Years Experience
3
FAA Certified Products
1000s
Aircraft Flying
Build to Spec Process

The Build-to-Spec Lifecycle and Deliverables

Our Build-to-Spec capability follows a methodical, full-lifecycle process for both hardware and software, ensuring every deliverable is meticulously crafted for certification.

Hardware (DO-254) Deliverables

Planning Documents:

  • • Equipment Development Plan (EDP)
  • • Plan for Hardware Aspects of Certification (PHAC)
  • • Hardware Design Plan (HDP), Validation Plan, and Verification Plan
  • • Equipment Certification Support Plan

Design & Implementation Artifacts:

  • • Equipment Description Documents
  • • 3D models and 2D drawings
  • • Hardware Interface Documents (Electrical, Mechanical, Functional)
  • • Final Part Numbers and Bill of Material (BOM)

Verification & Validation Artifacts:

  • • Qualification Test Plan and Procedures
  • • Qualification Test Results and Reports (EMI, HIRF)
  • • Hardware Verification Results (Initial and Final)
  • • Hardware Requirements Traceability Data

Safety & Certification Artifacts:

  • • Preliminary and Final Safety Assessments
  • • FMECA (Failure Mode, Effects, and Criticality Analysis)
  • • Hardware Accomplishment Summary (HAS)
  • • Declaration of Design and Performance (DDP)
  • • Final Hardware Certification Data Package

Software (DO-178C) Deliverables

Planning Documents:

  • • Software Life Cycle Environment Plan (SLE)
  • • Software Development Plan (SDP)
  • • Software Quality Assurance Plan (SQAP)
  • • Software Configuration Management Plan (SCMP)
  • • Software Verification and Validation Plan (SVVP)
  • • Software Certification Plan (SCP)

Design & Implementation Artifacts:

  • • Software Requirements Specification (SRS)
  • • High-Level Software Requirements (HLR) and Low-Level Software Requirements (LLR)
  • • Source Code and Object Code
  • • Software Design Documents (SDD)

Verification & Validation Artifacts:

  • • Software Verification Cases and Procedures (SVCP)
  • • Software Verification Results (SVR)
  • • Structural Coverage Analysis Reports (e.g., MCDC)
  • • Software Requirements and Code Traceability

Safety & Certification Artifacts:

  • • Software Accomplishment Summary (SAS)
  • • Final Software Certification Data Package

Project Examples: Certified Products by the Team

Our Build-to-Spec capability is best demonstrated through our team's successful track record of developing and certifying real-world avionics products.

FAA-Certified GPS Receiver (TSO C145x Beta 3 GNSS Receiver)

Description: The team was responsible for the full-lifecycle product development, from design to FAA certification and manufacturing. Over 10,000 units of this product have been delivered.

Implementation: The project involved full-lifecycle product development, including Single Board Computer, RF/Analog hardware (1575 MHz), Digital hardware (DSP Processor, Xilinx FPGA), and Power Supply components. The software contained 60K SLOC, and the FPGA program had 7K SLOC.

Standards:

DO-178B Level B DO-254 Level B DO-160F DO-229D DO-301 TSO-C145c ARINC 429 ARINC 743A MIL HDBK 217F SAE ARP 4754

FAA-Certified ADS-B Transponder

Description: This was a Build-to-Spec effort to design, develop, and FAA-certify an ADS-B transponder to detect air traffic up to 300 KM.

Implementation: The team handled full-lifecycle product development, including Single Board Computer, RF/Analog hardware (978 MHz, 1090 MHz, 45W PA), Digital hardware (ARM 9 Processor, Xilinx FPGA), and a Power Supply with hold-up and EMI/EMC circuits. The software was 100K SLOC, and the FPGA program was 12K SLOC.

Standards:

DO-178B Level C DO-254 Level C DO-160G DO-229D DO-260B DO-282B TSO-C145c TSO-C154c ARINC 429 SAE ARP 4754

FAA-Certified ARINC 429 Router/Filter (BA-440, BA-540)

Description: The team designed, developed, and certified an ARINC 429 router that acts as an interface between avionics systems with incompatible interfaces. The unit is used in retrofit solutions on some Boeing platforms.

Implementation: The design was based on the Single Board Computer LPC3250 Processor (32-bit, ARM 7 Core, 266 MHz).

Standards:

DO-178B Level B DO-160G

Certified by the FAA and qualified to meet DO-160G standards.

Comprehensive Certification Data Package

We provide a comprehensive set of artifacts required for certification with major regulatory bodies

FAA

Federal Aviation Administration certification support and documentation

EASA

European Aviation Safety Agency certification and compliance documentation

CEMILAC

Centre for Military Airworthiness & Certification (Indian) support

Ready for Full Product Development?

From concept to certification, our Build-to-Spec capability delivers complete aerospace products with proven success in the market.