Originally Posted by
L39 Guy
A stab trim runaway affecting the fly ability of the aircraft is no time to “figure out “ anything.
Stabilizer Trim Runaway. a malfunction which occurs when the Trimmable Horizontal Stabiliser (THS), or tailplane, on the aircraft tail fails to stop at the selected position and continues to deflect up or down.
Was it? By this definition, isn't any STS operation a trim runaway?