Final answer:
The maximum permissible fuel imbalance for an aircraft such as the Boeing 737 must adhere to manufacturer's specifications and is crucial for safe operation. Specifics can be found in the aircraft operating manual, and careful fuel management is vital as exemplified by an incident with a Boeing 767 due to measurement confusion.
Step-by-step explanation:
The maximum permissible fuel imbalance during takeoff and all other phases of flight varies depending on the aircraft model and its manufacturer's specifications. For instance, a Boeing 737, a common workhorse of the airline industry, typically has precise limitations on fuel imbalance that must be adhered to for safe operation. For most aircraft, this information is detailed in the aircraft operating manual and is a critical aspect of pre-flight planning and checks. Exceeding the permissible fuel imbalance can affect the handling characteristics and structural integrity of the aircraft.
The significance of careful attention to fuel measurements was highlighted in an incident with a Boeing 767, where confusion between the metric system and the English system of measurement during refueling led to a significant undersupply of fuel. This hazardous situation emphasizes the need for rigorous adherence to fuel management procedures.