A small in number extra details are herewith proffered on the cabin airflow proofs that began last week (Jan 27th) forward a sister ship to the crashed Swissair Flight 111 MD-11 The trial airplane was flown to the U with its in-flight entertainment network (IFEN) de-activated.

A small in number extra details are herewith proffered on the cabin airflow proofs that began last week (Jan 27th) forward a sister ship to the crashed Swissair Flight 111 MD-11 The trial airplane was flown to the U with its in-flight entertainment network (IFEN) de-activated, with all wires coiled and stowed. While the IFEN was reconnect to the aircraft power store for the tests, the hookup was modified to feature a direct power switch to the flight criterion crew. Readers may recall from our earlier coverage that the alone means Swissair flight crews had of removing electric power to the a whole was by pulling the circuit breakers. Indeed, pulling the IFEN circuit breakers was part of the 'parking' checklist for Swissair MD-11 flight crews

It may be worth noting that aircraft circuit breakers (CBs) should not be used as switches. They were not designed to be used as in the same state [i]or[/i] condition and with constant use the failure rate for their primary function can be count uponed to rise. Frequent action of the circuit breaker can lead to a "floppy" action, and CB with equal reason used may fail to report when they should. When the circuit protective device fails to expand a faulty circuit, one can reasonably reckon upon electrical fireworks to result. With hap the fireworks will be at that completion of the circuit where instruments and other "black box" items are positioned. If united is unlucky, the fireworks may flash on the mind at the distribution bus, the los of which means los of theorys en masse. As one pilot quipped, the have an odor of burning wire insulation may well alert the cockpit crowd to the dismaying fact that the tranquillity of the day is not likely to walk according to plan.

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