The mass and balance envelope, which provides information about the allowable weight and center of gravity (CG) limits for the aircraft, is typically found in the aircraft limitations section of the Aircraft Flight Manual (AFM). This section outlines various limitations and restrictions that must be adhered to for safe operation of the aircraft, including weight and balance considerations.

An Aircraft Flight Manual (AFM) is a document published by the aircraft manufacturer containing detailed information for the operation of the aircraft, such as the recommended aircraft operating technique for normal, abnormal and emergency operation together with the aircraft performance that should be achieved when the aircraft is operated in accordance with these procedures.

A typical AFM may contain the following sections:

• Section 1: General
• Section 2: Limitations
• Section 3: Emergency Procedures
• Section 4: Normal Procedures
• Section 5: Performance
• Section 6: Weight and Balance
• Section 7: Description and Operation of the Airplane and its Systems
• Section 8: Aircraft Handling, Servicing and Maintenance
• Section 9: Supplements
• Section 10: Operating Tips