In-flight reporting includes reporting all of the following EXCEPT:

In-flight reporting is crucial for ensuring the safety and efficiency of flight operations. It involves communicating any potentially dangerous conditions or situations encountered during flight to relevant authorities or nearby aircraft. Reporting is typically focused on issues that could affect the safety of other aircraft, the overall airspace, or operations at airports.

Mechanical failures, while serious, are generally handled internally by the crew and are not typically reported to air traffic control unless they pose an immediate threat to safety or require emergency procedures. The emphasis is on conditions that may impact other aircraft or require immediate situational awareness.

On the other hand, hazardous laser activity, hazardous weather conditions, and large concentrations of birds all pose immediate and external threats to the safety of flight operations. Reporting these conditions can prevent accidents or inform other pilots about the potential dangers in their vicinity, thus prioritizing situational awareness and safety across air traffic.

Therefore, while mechanical failures are critical to address within the cockpit and could lead to appropriate actions or emergency landing procedures, they do not fall under the same in-flight reporting requirements focused on awareness for external safety impacts.