The document discusses TransAsia Airways Flight 235 accident and how the SEMS system could have prevented it. It summarizes the flight data recorder information which showed the pilots shut off the good left engine instead of the defective right engine. The SEMS system measures structural elasticity and load on aircraft and could have detected the right engine failure, taken control of the left engine, and avoided pilot confusion through warnings. This accident demonstrates how SEMS could prevent similar tragedies in the future.

1. SEMS and FLIGHT 235 ACCIDENT (TransAsia Airways)
As already explained, the SEMS System (Structural Elasticity Measuring System) measures the elasticity at
any point of a structure; in other words, the system measures the force or load that acts on the point of a
structure and the direction of such a force or load.
According to data recorded by the black boxes, it seems that the pilots were wrong to shut off the engine in
good condition (left engine) instead of the defective engine (right engine). This type of error with fatal
consequences is not the first happening in civil aviation, and certainly won't be the last if we don’t put the
means to prevent it. Besides confusion, occasionally and for any reasons, the human mind in a reflex way
tends to make the mistake that should be avoided; risk that is increased in conditions of maximum stress.
Preliminary data presented at press conference in Taipei by Thomas Wang (Director Executive of
Taiwanese Aviation Safety Council):
 10:51:13 — Crew receives take-off clearance
 10:52:34 — Tower asks crew to contact Taipei Departure
 10:52:38 — Master warning sounds
 10:53:04 — Crew reduces power to the left engine
 10:53:12-18 — Stall warning sounds
 10:53:24 — Crew cuts power to the left engine
 10:53:34 — Crew declares emergency: "Mayday, mayday, engine flameout"
 10:54:09 — Crew calls for restarting the left engine multiple times
 10:54:20 — Left engine is restarted
 10:54:34 — Master warning sounds again
 10:54:35 — An unidentified sound is heard
 10:54:36 — Recordings end
The SEMS system from the very beginning would have detected the failure of the right engine, taking
control of the left engine in good condition maintained it at maximum power, to avoid confusion of the pilots;
for example, by warning sound and voice recording: "engine in good condition".
This accident is another clear example of an absurd tragedy that should never occur by applying the
SEMS System.
Miguel Cabral Martín
"TransAsia Airw ays ATR 72-212A B-22816" by 玄史生 → Licensed under CC0 via Wikimedia Commons
http://commons.w ikimedia.org/w iki/File:TransAsia_Airw ays_ATR_72-212A_B-

2. "TransAsia Flight 235 crash" by Source (WP:NFCC#4). Licensed under Fair use via Wikipedia