F-15 EMERGENCY LANDING USING ARRESTOR CABLE SQUAWK 7700 BAK-12 • 48TH FIGHTER WING RAF LAKENHEATH

Описание: Ladies gents and teddy bears, sometimes things can go wrong on the ground with aircraft but now and again, things can go wrong whilst airborne, an IFE, In Flight Emergency. Should this happen, an emergency landing will take place and aircraft will squawk 7700.

Because runway ops will cease for a long period of time, sometimes 30-40 minutes, aircraft that took off prior to the emergency can be recalled. Depending how much fuel is still on the emergency aircraft, fuel dumping may be required.

The emergency F-15E Strike Eagle will release a tail hook which is like a metal rod with a hook and the objective is to ’catch the arrestor cable’. The fire department, crash teams, medics and 48th Maintenance Squadron are in position to assist. Though the arresting cable on carriers are similar to cables here on land, the carrier ones will bring the aircraft to an abrupt halt, where as the cables used at aerodromes, these bring the aircraft to a more gradual stop.

A Little more info on Arrestor Gear
This particular system is a BAK-12. BAK stands for Barrier Arresting Kit. There are different types, such as a BAK-13 and BAK-14. The ones at Lakenheath (they have four) is a BAK-12. In the RAF, the arrestor cable is known as RHAG, Rotary Hydraulic Arrestor Gear. The aircraft arresting system is designed to safely bring aircraft to a stop in the event of an emergency. It is used with the aircraft arresting hook to “catch” the jet.

When an in-motion aircraft develops an emergency, the aircrew has to decide if they need to use the arresting system. If needed, the pilot deploys the aircraft’s hook, and lands the plane at least 1,000 feet from the arresting system. The aircrew will contact tower to request and confirm the 'cable'.

The hook drags on the surface of the runway (which we have seen in the video) until it comes in contact with the 1.25-inch steel cable. Once the aircraft’s hook captures the cable, the cable rips the nylon cords, holding it flat on the runway, and unravels its attached nylon tapes from storage reels.

As the tapes are unraveled, the reels turn a hydraulic pump that applies pressure to a set of modified brakes. It is these brakes that bring the aircraft to a stop.

The arrestor gear system is important as it is the only safe of stopping an aircraft with only a minimal amount of damage while preventing the loss of its crew. This is why we see many training scenarios using the arrestor gear. The more they train for this, this less mistakes made and it also gives airmen and ground crew (inc. Fire Department and Maintenance teams) the repeated training for when they will be faced with the real thing.

Each time the system is used, the nylon tape must be inspected and rolled back onto its storage reels and is then returned to its home at the start of the runway and tied down with nylon rope. The arresting system allows the pilots a sense of security. Every time a bird is caught lives are saved. With minimal damage to the aircraft, millions of dollars are also saved in the Air Force's assets.

So the cable can be used on an aircraft landing with gear issues, hydrualic issues or any issues that the aircraft has related to it being unable to stop properly. However, the cable can also be used on takeoff too.

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