Standards for passenger evacuation from aircraft not upated finds USA audit.

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The current standard is to demonstrate that the aircraft can be evacuated by all passengers in 90 seconds using half the exits. There have been increasing number of evacuations where it has been observed that the pasengers were carrying their personal belogings or delaying the evacuation to collect their belongings.The test scenario is conducted with motivated volunteers who have been briefed on the scenario. However a real evacuation with changing passenger profile will present different challenges.FAA largely updates its evacuation standards only after accidents, and its last update that was based on an accident occurred in 1991. FAA also has not conducted sufficient research on passenger behaviors and seat dimensions to determine how they affect evacuation standards. Furthermore, FAA does not collect comprehensive data from evacuations or data from aircraft model certifications to identify emerging risks and needs for regulation updates.Read the full report here FAA’s Process for U…

IndiGo flight followed a similar flight pattern and landed safely before the ill-fated Air India Express crashed

An IndiGo AT-72 turboprop landed at Kozhikode airport 01hr45min prior to the ill-fated Air India Express B-737.  The IndiGo ATR followed a similar flight profile befoe landing on the easterly direction runway 10 at the airport.

The IndiGo ATR too attempted to land on the westerly runway 28 but discontinued the approach. The reason could be due to poor visibility in rain and/or low clouds obscuring the pilots vision in an attempt to acquire visual references of the landing runway.

The second attempt was carried out on the easterly runway 10, same as the Air India Express. 

At the time of landing, the prevailing visibility in rain was between 1500m-2000m. The instrument landing system which guides the aircraft through electronic ground based transmitter signals to 250 feet above ground requires the visibility of atleast 1300m or more.

The IndiGo ATR may have faced less severe weather and the slower turboprop may have been more forgiving. Nevertheless, this pattern can provide some interesting insights about the prevailing conditions and the interactions with the air traffic controller, who is the only eye and ears of the pilots on the ground.

Comments

  1. You have not accounted for the Vertical and Horizontal profile of both the aircraft

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