How long are fuel samples considered valid?

Fuel samples are considered valid for 24 hours from the time they are taken. This timeframe ensures that the samples accurately reflect the condition of the fuel, allowing for effective monitoring of its quality and safety for use in aircraft. Beyond this period, the integrity of the sample may diminish, potentially leading to issues that could affect aircraft performance or safety. Therefore, adhering to the 24-hour validity period is essential for maintaining proper operational standards and complying with safety regulations.