Final answer:
Detailed written reports for incidents are required only if the NTSB requests them, often in cases where the investigation can enhance transportation safety.
Step-by-step explanation:
The content loaded written reports for incidents are not universally mandated but may be required upon the discretion of the National Transportation Safety Board (NTSB). By law, certain individuals and operators are required to immediately notify the NTSB of aviation accidents and specified incidents. However a detailed written report is typically only necessitated if explicitly requested by the NTSB. This request is often based on the incident's severity and potential for advancing transportation safety through investigation and analysis.
When the NTSB does request a written report, the involved parties are obligated to provide it. This report contributes to the NTSB's goal of improving transportation safety by understanding the circumstances and causes behind such events. Thus, while not all incidents result in a demand for a detailed written report, the requirement can be invoked at the NTSB's discretion.