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Tag: <span>Honeywell</span>

Pinging for Egyptair MS 804 as the Clock Runs Out

When a plane goes down in the ocean, the black boxes aboard have enough juice to ping for thirty days. The pingers on flight data recorders AKA “black boxes” last a minimum of 30 days. After 30 days, the devices are still active, but the sound on which searchers hone is expected to die out. The pinger is located by a “pinger locater,” a device that listens for the sound of the black box. It is towed within the search area but it’s listening radius is usually around 2 miles. The pinger’s sound is not very powerful, and the pinger is towed at 3 knots.

After AirFrance 447, legislation was underway to increase the battery life to 90 days. The technology exists, but because implementation of that transition has been slow, EgyptAir MS 804’s pinger battery is expected to expire at around 30 days.

Flight Data Recorders Beyond 447

Honeywell could be resting on its laurels, since the Honeywell Flight Data Recorders aboard Air France Flight 447 certainly performed, resisting two years worth of extreme water pressure and temperature. Skeptics did not expect the data to be recoverable. The fact is that the flight data recorders working for two years at 12,800 feet is operability beyond the design parameters. They were only expected to last about 28 days under water.

The FDR reports confirmed that in the minutes leading up to the crash, pilots were given conflicting speed readings.

The event does provide Honeywell a wakeup call with at least one FDR feature.

The only thing that gave out within 28 days was the battery. Honeywell plans to extend battery life.

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