Notes on integration, testing, and remote ops in aerospace.

Integration testing is the worst place to find an integration bug

By integration, the bug is already expensive. How to push interface defects left — into modeling and SIL — before hardware shows up.

Dan Zaidenband·3 min read

Integration & Testing

Integration testing is the worst place to find an integration bug

By integration, the bug is already expensive. How to push interface defects left — into modeling and SIL — before hardware shows up.

Dan Zaidenband·3 min read

Start Testing Before Hardware: A Practical SIL Plan for Integration Teams

A step-by-step SIL plan you can run before the first board arrives — what to stub, what to model, and which interfaces to lock down first.

Dan Zaidenband·5 min read

The 5 Types of ICD Ambiguity That Create Late Defects (and How to Catch Them Early)

The five recurring ICD ambiguity patterns that surface as integration defects — with concrete examples and how to flag each one at review time.

Dan Zaidenband·5 min read

Integration & Testing

How to build integration tests that catch real bugs before hardware shows up.

See all articles →

Integration & Testing

Integration testing is the worst place to find an integration bug

By integration, the bug is already expensive. How to push interface defects left — into modeling and SIL — before hardware shows up.

Dan Zaidenband·3 min read

Integration & Testing

Your SIL pipeline isn't broken. Your interface model is.

Flaky SIL runs usually aren't a tooling problem. They're an interface problem. Fix the model and the pipeline stops fighting you.

Dan Zaidenband·3 min read

Integration & Testing

Start Testing Before Hardware: A Practical SIL Plan for Integration Teams

A step-by-step SIL plan you can run before the first board arrives — what to stub, what to model, and which interfaces to lock down first.

Dan Zaidenband·5 min read

Integration & Testing

Integration testing is the worst place to find an integration bug

By integration, the bug is already expensive. How to push interface defects left — into modeling and SIL — before hardware shows up.

Dan Zaidenband·3 min read

Integration & Testing

Your SIL pipeline isn't broken. Your interface model is.

Flaky SIL runs usually aren't a tooling problem. They're an interface problem. Fix the model and the pipeline stops fighting you.

Dan Zaidenband·3 min read

Interface Control (ICDs)

Authoring, reviewing, and generating ICDs that don't drift.

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Integration & Testing

Stop Authoring ICDs. Generate Them From Code

Hand-written Interface Control Documents drift the moment code changes. Generating ICDs from the source of truth keeps them honest — and reviewable.

Dan Zaidenband·4 min read

Integration & Testing

The 5 Types of ICD Ambiguity That Create Late Defects (and How to Catch Them Early)

The five recurring ICD ambiguity patterns that surface as integration defects — with concrete examples and how to flag each one at review time.

Dan Zaidenband·5 min read

Lessons from Missions

Post-mortems and case studies from the missions that shipped — and the ones that didn't.

See all articles →

Integration & Testing

Schiaparelli's tests passed. The mission failed anyway

ESA's lander hit Mars at 300 km/h with green test reports behind it. A look at how passing tests can still miss the failure mode that matters.

Dan Zaidenband·4 min read

Industry Perspectives

How the space industry actually works — and where it's broken.

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Integration & Testing

"We tested it" isn't an answer at CDR

At Critical Design Review, "we ran the tests" doesn't prove integration readiness. Here's what reviewers should ask instead — and what teams should bring.

Dan Zaidenband·3 min read

Integration & Testing

What space vendors should ship instead of source code

Source code drops are the wrong deliverable. What primes actually need from suppliers: executable interface models, conformance tests, and traceable behavior.

Dan Zaidenband·4 min read

Latest Articles

The most recent from the Lynapse team

"We tested it" isn't an answer at CDRDan ZaidenbandIndustry PerspectivesJun 1, 2026

Schiaparelli's tests passed. The mission failed anywayDan ZaidenbandLessons from MissionsMay 1, 2026

Stop Authoring ICDs. Generate Them From CodeDan ZaidenbandInterface Control (ICDsMay 1, 2026

What space vendors should ship instead of source codeDan ZaidenbandIndustry PerspectivesMay 1, 2026

Integration testing is the worst place to find an integration bugDan ZaidenbandIntegration & TestingMay 1, 2026

Your SIL pipeline isn't broken. Your interface model is.Dan ZaidenbandIntegration & TestingMay 1, 2026

Start Testing Before Hardware: A Practical SIL Plan for Integration TeamsDan ZaidenbandIntegration & TestingMar 1, 2026

The 5 Types of ICD Ambiguity That Create Late Defects (and How to Catch Them Early)Dan ZaidenbandInterface Control (ICDsMar 1, 2026

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