What is the purpose of maintaining chain of custody for evidence in investigations?

• A. To ensure the integrity of evidence by documenting handling from collection to presentation.
• B. To inventory parts for salvage value.
• C. To determine aviation policy.
• D. To analyze weather data.

Answer: (A)

Maintaining chain of custody is about preserving the trustworthiness of evidence by recording every step it experiences from collection to presentation. This means keeping a detailed, unbroken record of who has had the item, when and where it was handled, how it was stored, and how it was protected from tampering or contamination. By documenting labels, packaging, sealing, transfer logs, dates, times, and handlers’ signatures, investigators can show that the evidence is the same material that was collected and that its condition has been preserved throughout the investigation. This credibility is essential for the evidence to be admissible and reliable in any legal or formal proceedings, and it helps prevent questions about possible substitutions or alterations.

In the context of an aircraft mishap investigation, this applies to all physical and digital evidence—wreckage, flight data records, witness statements, and other materials—so the findings rest on solid, traceable handling. If the chain of custody is broken or poorly documented, the evidence’s integrity may be challenged, and the investigation’s conclusions could be undermined.

This purpose isn’t about inventory for salvage value, nor is it about setting aviation policy or analyzing weather data. Those activities serve different objectives; chain of custody specifically protects the evidentiary value of items involved in the investigation.