Industry solutions
Defence & Aerospace
Airworthiness is evidence, not opinion.
Defence and aerospace programmes run on proof: every failure rate traced to a source, every hazard closed with analysis, every safety claim ready for the certification authority. RAMSynapse keeps that proof connected — from allocation at contract award to FRACAS in service.
The evidence chain breaks between tools
Predictions in one tool, FMECAs in spreadsheets, fault trees somewhere else — by CDR nobody can show which safety claim rests on which failure rate.
Baselines move, analyses lag
Every design revision invalidates numbers that were retyped instead of linked. The safety case ages the moment the BOM changes.
Certification asks for traceability
MIL-STD-882 and ARP4761 reviews want the path from hazard to mitigation to verification — reconstructing it manually costs programme months.
The regulatory landscape
The standards, and the modules that carry them.
MIL-HDBK-217F
Reliability Prediction of Electronic Equipment
Part-stress failure-rate prediction for electronics — still the contractual baseline on most defence programmes.
MIL-STD-882E
System Safety
The DoD system-safety process: hazard identification, risk assessment and acceptance, tracked through the programme lifecycle.
MIL-STD-1629A
FMECA
Failure Mode, Effects and Criticality Analysis — the failure-mode discipline defence customers still cite by number.
ARP4754A / ARP4761
Civil Airborne Systems Development & Safety Assessment
FHA → PSSA → SSA: the civil aviation safety-assessment chain, with fault trees quantified against allocated budgets.
MIL-HDBK-472
Maintainability Prediction
MTTR prediction and maintenance-burden analysis for fielded systems — the maintainability half of the RAMS case.
DO-178C / DO-254
Software & Hardware Design Assurance
Development assurance levels are set by the safety assessment upstream — the FHA severities and fault-tree budgets RAMSynapse carries are what the DAL assignment stands on.
A programme-typical chain
One model, every analysis.
How a defence programme runs the RAMS case on one system model — each result feeding the next analysis live, never retyped.
- Allocate the contract targetsAllocationBreak the system-level MTBF and safety targets down the BOM — every subsystem owner sees the budget they carry.
- Predict against MIL-HDBK-217FPredictionPart-stress predictions per LRU, compared live against the allocation — deviations surface the day the BOM changes.
- Run the MIL-STD-1629A FMECAFMECAFailure modes inherit the predicted rates automatically; criticality ranks itself against severity categories.
- Quantify the fault treesFault TreeTop events from the FHA, basic events fed by the same failure rates the FMECA uses — one source of truth for 882E risk acceptance.
- Close the loop in serviceFRACASField failures flow back through FRACAS; observed rates recalibrate predictions and re-age the safety case honestly.
Programme deliverables
The paperwork, generated.
The CDRL items a defence programme owes at every gate — produced from the live model, not reassembled from spreadsheets the week before the review.
MIL-STD-785B · MIL-HDBK-217F
Reliability Program Plan & Predictions
Allocation tables and part-stress predictions per configuration item, always reconciled with the current BOM baseline.
MIL-STD-1629A
FMECA Report
Worksheets, criticality matrices and single-point-failure lists generated from the same failure modes the fault trees consume.
MIL-STD-882E · ARP4761
Safety Assessment Report
Hazard log, quantified fault trees and residual-risk acceptance evidence, traceable from hazard to verification.
MIL-HDBK-472
Maintainability Prediction Report
MTTR roll-ups, maintenance task times and repair-level rationale from the maintainability chain.
R&M Status at SRR / PDR / CDR
Gate-ready scorecards: allocation vs. prediction vs. observed, per subsystem — the same numbers the registry carries, dated.
FRACAS Summaries
Field failure trends, corrective-action status and the recalibrated rates flowing back into the predictions.
Bring the certification authority a connected case.
See how a defence programme runs allocation, prediction, FMECA, fault trees and FRACAS on one shared system model — on your own infrastructure.