DEFECTS
System Defect Investigation & Correction
A model-anchored defect workflow: each state requires specific evidence and each defect carries traceability links back to the originating requirement and verifying test — the same links the Role → MBSE Coverage Matrix demands.
◤ Flow
Defect Lifecycle State Machine
⟦ SysML Snippet — New → Triaged → Reproduced → RootCaused → Fix Proposed/Implemented → Verified → Closed ⟧
◤ Tracker
Open / In-Flight Defects
DEF-3104 · MDF / Crypto · SEV-1
MDL signature verification rejects valid ACURL builds after KMI rollover
OWNER: USRL / Crypto · REQS: SRS-EW-0214, SRS-CR-0019 · TESTS: TC-EW-0098, TC-CR-0044
RootCaused
Evidence required at this state
- ▸Root cause statement
- ▸5-Whys or fault tree
- ▸Originating requirement gap (Derive link)
- ▸Affected model elements (Blocks / Activities)
DEF-3118 · Datalink · SEV-2
MADL time-slot collision in 6-ship beyond 80 NM
OWNER: Datalink Planner · REQS: SRS-DC-0044 · TESTS: TC-DC-0061
Fix Implemented
Evidence required at this state
- ▸Code change merged
- ▸Model baseline tag
- ▸Unit test additions
- ▸Peer review record
DEF-3129 · Ground Security · SEV-1
DTC offload sanitize skips last block on PMBA v3
OWNER: ISSE · REQS: SRS-GS-0018 · TESTS: TC-GS-0030
Verified
Evidence required at this state
- ▸Regression test result
- ▸SIL/HWIL evidence
- ▸Trace: Defect ↔ Requirement ↔ Test
- ▸No new defects opened by the fix
DEF-3137 · Weapons · SEV-3
Weapon EZ rendering off by 0.4 NM at high AGL
OWNER: Weapon Planner · REQS: SRS-SW-0061 · TESTS: TC-SW-0102
Reproduced
Evidence required at this state
- ▸Repro steps
- ▸Environment (SIL / HWIL / Lab)
- ▸Logs / artifacts captured
DEF-3142 · ALIS / Coalition · SEV-2
ALIS/ODIN sync drops releasability tag on partial fetch
OWNER: Coalition Gateway · REQS: SRS-CR-0007 · TESTS: TC-CR-0019
Triaged
Evidence required at this state
- ▸Owner assigned
- ▸Domain routed
- ▸Priority
- ▸Linked requirement(s)
DEF-3150 · Debrief · SEV-4
Debrief recon mis-aligns ADR clock by 1s on leap-second day
OWNER: Debrief · REQS: SRS-DB-0008 · TESTS: —
New
Evidence required at this state
- ▸Reporter ID
- ▸Build / version
- ▸Observed vs expected
- ▸Severity (1–4)
◤ Evidence Reference
Required evidence at every state
⟦ New ⟧
- ▸Reporter ID
- ▸Build / version
- ▸Observed vs expected
- ▸Severity (1–4)
⟦ Triaged ⟧
- ▸Owner assigned
- ▸Domain routed
- ▸Priority
- ▸Linked requirement(s)
⟦ Reproduced ⟧
- ▸Repro steps
- ▸Environment (SIL / HWIL / Lab)
- ▸Logs / artifacts captured
⟦ RootCaused ⟧
- ▸Root cause statement
- ▸5-Whys or fault tree
- ▸Originating requirement gap (Derive link)
- ▸Affected model elements (Blocks / Activities)
⟦ Fix Proposed ⟧
- ▸Design change (BDD/IBD diff)
- ▸Requirement update (if any)
- ▸Risk + mitigation
- ▸SCCB ticket (SPER-####)
⟦ Fix Implemented ⟧
- ▸Code change merged
- ▸Model baseline tag
- ▸Unit test additions
- ▸Peer review record
⟦ Verified ⟧
- ▸Regression test result
- ▸SIL/HWIL evidence
- ▸Trace: Defect ↔ Requirement ↔ Test
- ▸No new defects opened by the fix
⟦ Closed ⟧
- ▸CCB acceptance
- ▸Release note entry
- ▸Lessons-learned captured
⟦ Will Not Fix ⟧
- ▸Rationale
- ▸Risk acceptance memo
- ▸AO acknowledgement (if security)
◤ Traceability