What does a fuel flow indication of 0.1 PPH or below indicate?

A fuel flow indication of 0.1 PPH or below is a critical warning signal that suggests a possible engine failure. In normal operations, the engine requires a specific amount of fuel flow to maintain performance and function properly. A fuel flow this low can indicate that the engine is not receiving enough fuel to operate, which could result in a loss of power or outright engine failure.

In aviation, monitoring fuel flow is essential for ensuring that the engine operates efficiently and safely. When fuel flow drops significantly, as indicated by a reading of 0.1 PPH, it serves as an urgent indication that immediate corrective action may be necessary to avoid engine damage or adverse operational events. The other options relate to conditions that would not typically show such an extreme drop in fuel flow, making this particular indication a strong warning of a potentially critical issue with the engine's operation.