The incident occurred because the Tejas entered a low-level rolling maneuver. Observers famous a slight deviation from the routine carried out on earlier days – an offset that positioned the plane marginally out of place and decreased the margin for restoration.
The plane failed to finish the roll and arrest its descent, finally impacting the bottom with inadequate altitude remaining. It is a traditional manifestation of the low-level “vitality entice”: the pilot exhausts each kinetic (pace) and potential (altitude) vitality earlier than the plane might be stabilized.
A compelling speculation for this decreased margin is an preliminary misjudgement of true altitude, doubtlessly brought on by an incorrect QNH (altimeter strain) setting. The METAR for the interval (OMDW 211300Z) reported a QNH of 1017 hPa. An altimeter set even 10 hPa larger would over-read by almost 300 ft, vital sufficient to erase the slender security buffer that aerobatic shows usually depend upon.
Such an error wouldn’t essentially be apparent to the pilot within the second, particularly when centered on sustaining choreography, directional cues, and timing inside a congested show space. However it might materially alter the true peak at which the maneuver was initiated.
