AS6171 Risk Characterization — free calculator

Steps 1–3 of the AS6171 risk scoring worksheet. The full tool adds the CDC/CTC coverage engine, test plan configuration, compliance sequences and all reference tables.

Step 1 — Primary Risk Factors

Risk ComponentCategoryValueScore
Product Risk (Rp)4-Minor / 3-Marginal / 2-Critical / 1-Catastrophic 50
Component Risk (Rc)4-Minor / 3-Marginal / 2-Critical / 1-Catastrophic 50
Supplier Risk (Rs)1-High / 2-Mod-High / 3-Mod-Low / 4-Low 50
Unadjusted Risk Score150
Unadjusted Risk Category

Step 2 — Adjustment Factors (0–100, normalized)

FactorRaw (0–100)NormalizedRule
Rp Adj 4.1 – Test Level-4.0(raw/100)×(−20)
Rp Adj 4.2 – Like Redundancy-4.0(raw/100)×(−10)
Rp Adj 4.3 – Unlike Redundancy-8.0(raw/100)×(−20)
Rc Adj 5.1 – Complexity/Testability4.0(raw/100)×20
Rs Adj 6.1 – High Risk Supplier10.0(raw/100)×20
Overall Adj 7.1 – Part Availability10.0(raw/100)×20
Total Adjustments12.0Like and Unlike Redundancy are alternatives: Unlike is used when > 0, otherwise Like (AS6171A Table 5 line 12)

Step 3 — Adjusted Score & Final Tier

Adjusted Risk Score162.0
FINAL RISK CATEGORY (limited to ±1 tier from unadjusted)

🔒 In the full tool — unlocked with a subscription

  • CDC / CTC coverage over 69 defects × 37 methods
  • NCD / UCD classification vs target confidence
  • Test plans: Tables 6A / 6B / 7, all tiers & models
  • Required-sequence compliance with GAP detection
  • Part-type applicability (61 part types, Table A1)
  • Sample size determination (Tables 8–10)
  • Official §4.1 test method definitions
  • Print-ready assessment reports
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