Space agency NASA is diving into blockchain solutions to strengthen air travel security against growing cyber threats. The move signals how distributed ledger technology is expanding beyond cryptocurrency into critical infrastructure. Aviation faces intense pressure from sophisticated cyberattacks targeting flight systems and passenger data. Blockchain's immutable record-keeping and decentralized architecture could create tamper-proof audit trails for flight operations and maintenance logs. This exploration reflects a broader trend: traditional sectors finally waking up to blockchain's practical security applications. Whether it gains traction depends on integration complexity and regulatory approval—but it's a solid reminder that crypto tech has real-world utility beyond trading and speculation.