![\"Cockpit](\"https:\/\/foxbatpilot.files.wordpress.com\/2015\/04\/cockpit-safety.jpg\")
Next, secondary\u00a0safety. This ranges from the simple – eg how many bits stick out in the cabin to\u00a0injure you during\u00a0anything, from just getting into the aircraft, to a full-blown crash – to the complex – how the airframe will protect you (or not) if you hit something or end up inverted in a field.<\/p>\n
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At a basic level, have a look at:<\/p>\n
– how close are your legs to the instrument panel and other parts of the airframe?
\n– How close is your head to the canopy or roof? Sudden turbulence could potentially give you a nasty bump!
\n– How the seatbelt is fixed to the airframe and whether it has one or two shoulder straps (or even a crotch strap – usually only in aerobatic aircraft).
\n– Whether you can easily pinch\u00a0your fingers under levers and other controls. Could be a dangerous distraction if it happens at a crucial time, like taking off or landing.
\n– Whether there’s suitable padding in likely areas of head or knee contact.
\n– Could you sit there for 2-3 hours without aches, pains and cramps?<\/p>\n
At the next level, consider: <\/p>\n The last word about secondary\u00a0safety concerns the material the airframe is built from. There are three main types – metal, wood and composite.<\/p>\n C <\/p>\n In summary, when choosing an LSA, only you can decide which safety features are important for you. I know some pilots who won’t fly an aircraft unless it has a ballistic rescue system. Others work on an ‘it will never happen to me’ basis. In between these extremes, weigh up the\u00a0primary and secondary safety\u00a0elements and give them a weighting that’s important to you. That way, at least you’ll choose an aircraft that you know is right for you.<\/p>\n","protected":false},"excerpt":{"rendered":" Next, secondary\u00a0safety. This ranges from the simple – eg how many bits stick out in the cabin to\u00a0injure you during\u00a0anything, from just getting into the aircraft, to a full-blown crash – to the complex – how the airframe will protect … Continue reading
\n– how easy is it to exit the aircraft in an emergency? For example, if there’s an engine fire on the ground.
\n– Could you get out if the aircraft was inverted on the ground?
\n<\/span>– Is there plenty of room to move in the cabin?<\/p>\n![\"Small](\"https:\/\/foxbatpilot.files.wordpress.com\/2015\/04\/small-aeroplane-big-man.jpg\")
<\/a>In particular:
\n– Can the controls be moved fully and freely to their limits without having to move your (or your passenger’s) legs out of the way?
\n– Can you push full rudder deflection? Both\u00a0left and right?
\n– Can you see out properly? How difficult is it to see the runway in front when you’re on the ground?
\n– Do you have to duck to see under (or over) the wing while flying? You’ll soon get a crick in the neck if if it’s a pain to look\u00a0and you might do it less often than you should.
\n– Is it easy to knock the controls inadvertently – particularly the throttle and the elevator and\/or aileron trim?
\n– Does the aircraft have an isolating switch to cut all electrical power in an emergency?
\n– Is there a park brake to facilitate engine warm up and ignition checks? In some aircraft it is virtually impossible to hold the brakes on, hold the flight controls, use the throttle and check the ignition all at the same time.<\/p>\n<\/a>Finally – and usually\u00a0more\u00a0difficult – try to find out:
\n– Is there a safety cage or roll-over hoop round the cabin ? This will help protect you and your passenger in an impact and also help keep the doors (or canopy) from jamming shut, trapping you inside.
\n– What is the safety record of the aircraft? What percentage have injured people or worse?
\n– Can\u00a0it be fitted with a ballistic rescue parachute?<\/p>\nMetal is well known to have excellent impact absorbing qualities; initially it bends rather than breaks and structures can be designed to reduce the G-forces acting during a crash. A common reaction\u00a0from people who’ve experienced an accident in a metal airframe aircraft is ‘it all seemed so gentle, I just couldn’t believe the aircraft was a write off when I got out and looked at it’. That’s because the airframe did its job. However, if there’s corrosion in the airframe, it may not do its protecting job\u00a0properly.<\/p>\nWood is used much less in LSAs nowadays, although at least one of the most famous World War Two aircraft – the De Havilland Mosquito – had a wooden airframe.\u00a0A well designed and built wooden aircraft should have good impact absorption although in some higher energy crashes, wood will break suddenly as it doesn’t bend as much as metal. It also depends how much of the airframe is glued, pegged or screwed together – believe it or not, a well-glued wooden airframe is stronger than one screwed together.<\/p>\nomposites are used extensively in LSAs. Some manufacturers will tell you their aircraft are ‘carbon fibre’ but in most cases – because of the sheer expense – this is used very sparingly only in high-stress areas. Most composite aircraft are mainly or wholly some sort of glass-fibre. As boat builders will tell you, getting consistent results when manufacturing with glass-fibre is a notoriously difficult process. As a result, the empty weights of the same model of LSA can vary substantially (see\u00a0Choosing a Light Sport Aircraft (LSA) – 1 – what about weight?<\/a>). Also, to ensure sufficient strength, manufacturers tend to err on the side of too much rather than too little. The crash characteristics of composite airframes are quite different from metal or wood – composites\u00a0do not bend much at all. Their ultimate breaking strength is often higher than metal or wood, but when they do break, they tend to shatter into small, often sharp pieces. Another problem with composites is water getting into the (sometimes foam-filled) structure through minor dings and cracks – good reason to make sure any puncture in the skin is fixed immediately.<\/p>\n<\/a>Recent developments in light aircraft\u00a0safety have\u00a0seen the appearance\u00a0of\u00a0‘inflatable restraint systems’<\/a> – or seatbelt air bags. As far as I am aware, these are not yet offered as standard on any LSAs but no doubt the time is coming. At US$1,000-1,500 per seat, they are probably worth considering. A ballistic rescue system for an LSA costs in the region of A$6,000, so seat belt inflation systems could represent (expense-wise) a half-way house.<\/p>\n