What are the fuel temperature limitations for operation?

The correct answer highlights the importance of maintaining a specific maximum bulk fuel temperature to ensure safe and efficient operation of the aircraft, while also recognizing weight considerations. A maximum bulk fuel temperature of 50°C is set, which aligns with safety protocols to prevent potential issues related to fuel performance and engine operation. This specification is particularly critical as it directly impacts fuel viscosity and combustion efficiency.

Moreover, the stipulation of having a minimum of 2800 lb reinforces the understanding that certain aircraft loading and operating conditions are necessary to maintain stability and prevent fuel-related complications during flight. This combination of temperature and operational weight is essential in managing factors such as fuel vaporization and flow rates, which, if not adequately controlled, may lead to engine performance issues or increased risk of fuel system malfunction.

In contrast, the other options either propose different maximum temperatures or do not provide critical weight considerations linked to operational safety. These variations might not adhere to the safety standards necessary for optimal aircraft performance.