Runway 22 "Black Box" Traditional Cache
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Difficulty:
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Terrain:
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Size: 
(regular)
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This would be a fun cache for all of the psycho night-cache hunters here in Fayetteville. Yes, I'm referring to:
gorfner, ABNDaddy, The Lewis Crew, Hawk MTP, RennerClan, RGRHutch and the newest madman Gustav Vasa.
Your task here is to locate the "Black Box" and add your information to the data sheet. Have fun.
Recammo the hide when replacing.
In aviation, the term Black Box refers to the flight data recorder (FDR) and cockpit voice recorder (CVR) responsible for recording all communications in the cockpit of an aircraft in flight. The phrase has become popularized by modern media while reporting aircraft crashes, despite the fact that the devices are usually not black.
These ICAO regulated "black box" devices are often used as an aid in investigating aircraft mishaps, and its recovery is second only in importance to the recovery of survivors and victims' bodies. The device's shroud is usually painted bright orange and generally located in the tail section of the aircraft. They are designed to withstand intense heat and pressure. Also, modern FDRs are typically double wrapped, in strong corrosion-resistant stainless steel or titanium, with high-temperature insulation inside.
Original requirements were for a unit to be able to withstand a 100g impact and be installed in the forward avionics bay with the rest of the avionics boxes. After several accidents with aircraft equipped with FDRs, it soon became evident that the 100g specification was inadequate. To correct the situation, the Federal Aviation Administration made a specification change which increased the impact requirements to 1000gs and relocated the recorder to the rear of the aircraft. The reasoning for the change was that, following initial impact, the rear of the aircraft would be moving at a slower speed, thus, more recorders would survive.
Through the years, FDRs have survived the most horrible accidents. To ensure their survivability, a series of tests needs to be accomplished, and the test must be done in sequence.
Crash Impact Test -- It has been agreed that 3400gs for 6.5 ms would be required to meet most accident scenarios. This test is actually performed with a cannon. A CVR has survived a crash that was estimated to be more than 6000gs.
Static Crush -- In this test, 5,000-pound pressure is applied against all six axis points.
Pierce Test -- A pierce test employs a 500-lb. hardened steel pin weight dropped from 10 feet.
Fire Test -- The devices are subjected to 1100 degrees Centigrade for 60 minutes, and then undergo 10 hours at 260 degrees Centigrade.
Deep Sea Pressure Test -- The device is subjected to a pressure equivalent to 20,000 feet of ocean depth.
FTF: Congrats to the hardcore gorfner for his braving the 1:00 AM hardship!
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