When countries co-ordinate a search mission, they're not always sharing information.

Malaysia's government has, justifiably, been lambasted for its missteps and mistakes. MH370 was detected by radar at 2.15am after it veered left from its course. But this was not noticed by the four-person team monitoring the radar until later that morning.

But Malaysia's allies and neighbours have not shared satellite information in a timely fashion either. China took three days to release its grainy footage of debris in the South China Sea. Australia took four days to reveal its images of large flotsam in the southern Indian Ocean. Thailand didn't reveal that it picked up MH370 on its radar for 10 days, saying it was never asked.

It takes time to identify and analyse an image taken from space. However, China and the US, the world's great geopolitical rivals, are not inclined to share secrets, and those pertaining to air-defence information and space-based surveillance hardware are some of the most sensitive.

Malaysia's defence and acting transport minister, Hishammuddin Hussein, this week said the country had ''put our search effort above our national security'', but he bemoaned the fact that it was the only country to have done so.

There were passengers from 15 nations on MH370. In a globalised world, air disasters will require more international co-operation. New protocols for handling sensitive material between nations are needed. There are lives to be saved in search and rescue operations and speed is of the essence.

How could a modern aircraft vanish when there are websites that track planes in real time?

The public's incredulity is warranted because there is a technological solution - and there has been for a decade. It's just that with many carriers in financial trouble, the airline industry has been slow to adopt the system.

The backbone of the global commercial aircraft monitoring system is land-based radar, augmented by a secondary radar on the plane that emits a signal pinpointing its location, with a signature that identifies the aircraft. But radar only covers 10 per cent of the planet. There are huge gaps over the oceans and deserts, including Australia's.

Moreover, the plane's secondary radar, like its separate ACARS communications system, can be shut down in the cockpit - as apparently happened with MH370 - or by mechanical failure. This means only certain types of land-based radar can pick up the plane, mostly military facilities. Even then, the object can't be precisely identified. It will only be a blip on a screen.

Satellites are even worse. The ''pings'' from an unidentified aircraft picked up by a satellite over the Indian Ocean last weekend could only be vectored into two vastly divergent possible flight corridors to the north and south.

The solution is a satellite tracking system that is used by about 60 per cent of planes but was not on MH370. The system broadcasts an aircraft's position, velocity and other information - second by second - and allows the aircraft to be pinpointed within 10 metres.

The aviation industry needs to embrace this technology as standard and develop a system that can prevent anyone in the cockpit shutting it down.

Why doesn't the black box float?

The key to any aircraft investigation, the black box, can take years to find if a plane ditches in the ocean and its debris is not discovered fairly quickly as currents can move the wreckage hundreds of kilometres from the initial point of impact. In a handful of instances, it hasn't been found at all. Its beacon has a short range and sends out ultrasound. It's not connected to satellites, yet that technology is available and experts say it should be embraced.

Can the plane's flight recorder - actually an orange box with two units comprising separate cockpit and flight data recorders - be better designed? The mystery of MH370 has prompted renewed discussion about designing a black box that can float. In deep water, its signal has a range of as little as 10 nautical miles and runs out in 30 days. Such devices certainly exist for boats, and some aircraft. Surely a flotation device triggered by barometric pressure once the black box is sinking could be devised for commercial aircraft?

There are big gaps in the global airworthiness alert system.

One of the intriguing early developments in the search for MH370 was that in June 2013 the US Federal Aviation Administration discovered a 40-centimetre crack on a Boeing 777, where the satellite antenna attached to the fuselage.

But it took until February this year for a formal directive ordering airlines and manufacturers to investigate and fix any flaws on all of these planes. MH370 was a Boeing 777-200ER model that was under the directive. However, the antenna was never installed.

Moreover, FAA warnings are seen as the de facto worldwide safety alert system. But the regulator confirmed to Fairfax Media that it had no formal jurisdiction over the Malaysia Airlines jet because it was owned by a non-US air carrier. The airworthiness alert system has been exposed as being confusing, incomplete and dangerously slow.

Passport control is not as watertight as we'd like to think.

Two Iranians boarded MH370 with stolen passports. It appears they were asylum seekers not terrorists. But the ease with which they boarded the jet showed how widespread the fake passport racket is, and how there is little cross-checking at airports.

Interpol has an estimated 40 million lost or stolen passports in its database. Passengers boarded planes 1 billion times last year without their passports being checked against that database.

Australia is one of the worst offenders, using the Interpol resource to screen passports only 335 times last year for more than 30 million international visits.

The database already exists but there is no system to cross-check. Surely, a computer program could be devised to do this quickly and automatically. Such a program could then be rolled out to all airports.