Flying To Survive

 

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The definition of a bush pilot is a person who has been taught the survival skills necessary to become an old pilot. These people are made, not born, with trade secrets passed down generation by generation...

 

THERE ARE MANY ACCIDENTS and fatalities with light aircraft today and we hear cries that aircraft are falling out of the sky. I have been involved with aircraft for the last 30 years, and because of my experience, people often ask me why this should happen. My answer is, 'Inexperienced pilots, poor maintenance (in some cases no mainte­nance), inadequate daily pre- flight inspections and bad fuelling techniques'.

 All this has prompted me to put pen to paper. My aim is to make a few people think and even to save some lives.

My motto is, 'If you cannot afford to learn to fly correctly, you should quit; if you own an air­craft and cannot afford to maintain it properly, you should burn it'.

 Flying is a very special skill

The thing most noticeable to me is that as a pilot's hours increase, so does the ego. This decreases the safety factor in leaps and bounds. A person "should not be in command of an air­craft unless they can handle every aspect of fly­ing. This is a very special skill and it should not be abused. Learning to fly is like learning to play the piano. If you were taught by the best, only practice will make you as good. Today, the curriculum for teaching pilots is only the mini­mum. A student usually secures a private licence within 80-100 hours. Within this time frame, you cannot expect someone to have all the skills and knowledge of aircraft handling and of the types of situations that can be encountered. An Examiner of Airmen once told my daughter as he put her licence into her hand, 'Here is your licence. Now go and get your father to teach you to fly'. Now, that com­ing from the CAA must say something!

 Never be trapped in the air

Month after month, pilots and passengers are dying unnecessarily because the pilot could not get onto the ground in an emergency. Often the pilot detours several miles hoping to reach another aerodrome but does not make it.

 To avoid this you must know how to get your aircraft on the ground safely. Skill is required to find a suitable place to land as soon as possible without damage to your aircraft or injury to persons on board.

The most important skill of survival flying is landing the aircraft correctly, that is, being able to place the aircraft on the ground where you want it at the lowest safe airspeed without stalling onto the ground from a great height, and being able to do this in any weather condi­tions from calm to 30 knots of wind. Today, not everyone is taught to land the aircraft correctly. If you want to do advanced aerobatics, you have to be taught. If you want to handle your aircraft in all conditions, you have to be taught. If you want to have advanced landing skills, once again, you have to be taught.

Bush operations involve all aspects of landing management, including landing on straight roads and curved roads, landing in paddocks, landing on smooth and rough surfaces, and heading uphill, downhill, into wind, downwind and crosswind, to name only a few.

An emergency situation can require any of these skills, but you will never acquire them on a 3,000-foot bitumen runway clear of all obsta­cles. Even if you do not want to become a bush pilot, there could be times and situations that will require you to put these techniques into practice. Learning how to survive, therefore, means going out and experiencing the real thing, under instruction or supervision, until you have developed the necessary expertise to carry out your emergency procedures. It means going out to a bush strip and being taught to operate in unfamiliar conditions and experi­encing the vastly different requirements for landing. I promise you that this will change your thinking on the capabilities of yourself and your aircraft.

 Techniques of landing

One of my first lessons in bush flying was learn­ing to handle my aircraft on and near the ground. Developed urban airfields are not adequate for teaching ground handling to a bush pilot. I believe that the only ground handling that can be learnt at these fields is taxiing out to the runway for a takeoff, then landing into wind or crosswind, and taxiing back to the tie-down point.

 To land safely on an undeveloped strip, you have to be able to fly your aircraft at the lowest safe airspeed and as close to the ground as possi­ble. I advise you to first practice this with an experienced instructor in still-air conditions.

Being able to control your aircraft close to the ground may sound easy, but you will find it to be one of the most difficult skills to acquire. Once you have the idea, you then have to practice in windy conditions including into wind, crosswind and downwind. It is most important to practice this until you have it down to a fine art.

If your aircraft is fitted with flaps, use full flap and power to reduce your stalling speed. With practise and a good instructor, you should be able to hold your aircraft approxi­mately two feet off the ground while keeping the aircraft in the correct landing attitude and remaining off the ground for as long as you wish. As the aircraft is already in the landing attitude and you are flying at the lowest safe airspeed a few feet above the ground, the only thing holding you in the air is power. When you reach your touch-down point, reduce your _ power and the aircraft will gently settle onto the ground. This method is used on both nose­wheel and tail-wheel aircraft.

Forced landings

Can you survive a forced landing?

No one is ever really taught to do this. I ask you to think back to your training days. You were taken out to the training area. The instructor pulled the throttle off and said, 'OK, we are about to do a forced landing'. This was often onto an airstrip in the middle of the training area, rather than into a paddock with obstacles such as trees or powerlines. As you approached the field, the instructor said, 'We are a bit short of the landing spot so we can tack on a few hundred revs', or, 'You are going to overshoot'. So you added power, and went around and tried again. What does actually happen when the engine is stopped and the propeller is staring you in the face? You cannot add power then. Your judgment and skill have to be at peak performance.

Therefore, forced landings are the most important part of flying to survive. You can fly 1,000 hours and not encounter one problem. You begin to think that you are a good pilot and that nothing will ever go wrong with the air­craft. You develop a false sense of security. Then one day it happens. This is something you have never encountered in your life-not even in training, because this is for real. You become frightened. Your heart pumps with adrenalin and you cannot think straight. You panic and your judgment goes out the window. The air­craft stalls and spins into the ground before it reaches a suitable landing place.

All of this could have been avoided with proper training. Part of bush flying is to treat every landing as if it were a forced landing ­practising your technique all the time from any height and from any direction until it becomes second nature.

Just remember you never know when this will happen and, given Murphy's Law, it proba­bly won't happen over a large cleared paddock or an airfield.

Obstacles

    It seems that most pilots have been taught to be very afraid of trees and powerlines. Some pilots have told me that the trees seem to draw you into them-like looking over a high cliff or a tall building. If this does happen it is almost certain­ly because they are afraid.

     Pilots are told to stay away from obstacles and this is sensible. However, we are talking about flying to survive so that when an emer­gency arises, we can handle it. During many forced landings, aircraft hit trees or powerlines. But if you have been taught to fly close to obsta­cles and under powerlines you will not be afraid to do so. This can make the difference between a successful forced landing and a destroyed air­craft with injury or death. I must emphasise that you do not go out and practise flying under powerlines-this is strictly the theory on how to handle the emergency.

In short-field landings, trees and powerlines cause disaster. You can either come in too high and crash on the far end of your landing field, or come in too slow and stall into the obstacle. If you could fly between the trees or under the powerlines, you would survive.

    It is easier to judge the height of your aircraft above the ground than to judge your distance from the top of a powerline. This is because you judge your height above the ground every time you land your aircraft. When you try to go over powerlines, the fear factor becomes involved­ the fear of hitting them. On an emergency approach into a restricted paddock that has powerlines running across it, the best procedure could well be to go under the powerlines, not over them, because airspeed is the most impor­tant factor going for you. If you raise the nose in an attempt to fly over them, the airspeed will decrease rapidly and could cause your aircraft to stall or to become so high that you cannot get into your forced-landing area. Try to touch down right under the powerlines, or, if you have to go further along the paddock or road, try to fly only three feet above the ground. If you mis­judge and hit the ground, you will bounce your aircraft but you won't die.

     I repeat-do not practise flying under pow­erlines. This is strictly an emergency procedure. Once again, survival comes down to being able to handle your aircraft close to the ground.

Fuelling

    Power losses in flight can result from poor refu­elling techniques. Bush flying involves refuelling aircraft from drums and other containers. You are asking for trouble if you refuel from con­tainers without straining the fuel through a properly filtered funnel. No fuel should go into an aircraft unless it is properly strained.

 Once you have left an aerodrome, where fuelling facilities and people qualified in their use are available, refuelling your aircraft with clean fuel becomes a very different matter.

If you are forced to refuel with Mogas you must consider certain hazards. Mogas is more prone than Avgas to vaporise in hot conditions. Leaving the aircraft shut down with cowls closed for 10 to 15 minutes after landing, increases the risk of vaporisation which could lead to a loss of power during the next takeoff. To prevent this, either head the aircraft into wind and keep the engine running or shut the engine down, open the cowls, and remain on the ground for at least 30 minutes.

You can never be sure that Mogas in drums is clean. Even Avgas in drums is suspect. Never refuel from drums without filtering the fuel through a funnel equipped with a filter such as a chamois. If you are forced to use Mogas, use Super. Do not use Unleaded.

 Fuel in drums standing in the open can be affected by condensation. Drums standing upright can vent vapour during the heat of the day and develop a partial internal vacuum when the drum later cools. Condensation forms on the top of the drum during the night and the partial vacuum can cause water to be drawn inside past the bung. To minimise this risk, tighten the bung after the drum has begun cool­ing before any condensation forms.

     All drums containing fuel should be stored lying on their sides unless stored in a weather­proof building. However, even in a building, tem­perature changes can lead to some venting and condensation. Check that the bungs are tight.

 When refuelling, always ensure that the foot of the pump is at least 15 centimetres above the bottom of the drum. It is better to leave several litres of fuel in the drum than to pump water into the aircraft fuel tanks, especially if using Mogas. People buying Mogas tend to use any containers they can find without first checking to ensure that the containers are clean. Also, they may unthinkingly pour fuel into a tank using any funnel available. Old painted jerry cans are particularly hazardous' as bits of paint can flake off and enter the fuel. I have wit­nessed many engine failures from paint slivers causing fuel blockages. Clean fuel is essential. Any contaminant can lead to an engine failure.  

We are all taught to carry out a water check after refuelling. This is essential even if only 20 litres of fuel have been added. Always ensure that the tank caps are secure. This may be a little more difficult on high-wing aircraft, but it is vital nonetheless. An insecure cap can lead to fuel being drawn out of the tank in flight, signif­icantly reducing endurance.

 Spark Plugs

    Older low-compression engines using high-lead Avgas need to have their spark plugs cleaned at least every 15 hours. Small balls of lead form on the plugs and will eventually short out the ter­minals if not cleaned. I have had two engine fail­ures followed by forced landings due to leaded plugs. Fortunately, by applying what I had learned about forced landings I was able to land, clean the plugs and continue without damage to the aircraft or injury to people.

 Navigation

    Visual navigation in the outback and visual nav­igation in the coastal regions are as different as chalk is from cheese. Outback regions contain large tracts of land that are quite featureless compared to the populated areas. You may be operating in areas not served by radio navaids. If you want to operate in the outback, then you need to be taught to navigate in the outback because what you have learnt while flying around the coastal regions may not be adequate.

     As the use of GPS spreads throughout the industry, there is a danger that pilots will lose interest in traditional navigation skills. What happens when they are on their way to the Birdsville Races and the GPS goes up in smoke or the electrical system goes down? They are left with only a map or a compass. Without the necessary skills, they will be lost within a few minutes.

You should be trained by a competent in­structor with significant experience of flying in the outback, using only a map, compass, clock, and hand-held flight computer. You must be able to determine your drift without navaids. If you learn these skills, you will never be lost in the outback. You will be flying to survive.

 Travelling with a bush pilot in 1959, Artie Hearne was so impressed with the pilot's skills that he chose bush flying as a career. His first aircraft was an Auster J5.

Artie's bush-flying career has spanned 30 years. He has flown extensively in support of oil exploration in places ranging from Princess Charlotte Bay (Qld) to the Simpson Desert and Lake Mackay (WA). He flew full-time in the outback from 1964 to 1975.

 Throughout his career, Artie has learned the skills necessary for safe operation of single-engine and twin-engine aircraft in hazardous conditions in remote areas.

 Artie and his daughter Tracy are both senior instruc­tors with the Australian Ultralight Federation and are currently instructing pilots in bush-flying techniques using an Australian Lightwing ultralight aircraft.

 

 


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