Early investigations into the latest Qantas incident have found no evidence suggesting a mobile phone or laptop computer caused the plane's uncontrolled descent above Western Australia, officials say.

The Spanair plane involved in a crash that killed 154 people in Madrid in August attempted to take off without opening its flaps and slats, according to the 12-page preliminary report on the accident released today in Madrid by the Spanish Public Works Ministry.

The Australian Transport Safety Bureau's investigation into the sudden altitudinal drop by a Qantas flight on Tuesday is progressing well.

A small passenger plane crashed on landing this morning in Nepal's Everest region, killing 18 people believed to be mostly German tourists, Nepalese officials said.

Qantas said today its primary concern in the wake of yesterday's emergency was the well-being of its passengers and staff.

Air accident investigators say faulty equipment - not turbulence - appears to have caused a Qantas plane to plunge 2000 metres on an international flight yesterday.

Video footage taken by a passenger aboard the Qantas Airbus A330 which reportedly plummeted 2000 metres mid-flight yesterday shows substantial interior damage.

Passengers aboard an international Qantas flight today told of their horror as the plane plunged up to 3,000 metres over Western Australia, hurling people around the cabin, seriously injuring 20 of them.

More than 60 per cent of Australians believe the safety standards of Qantas have slipped, according to a poll released on the same day as another incident involving the national carrier.

Medical authorities say the injuries sustained by up to 40 passengers of a Qantas flight which hit turbulence this afternoon were not life-threatening.

Qantas says passengers and crew on a Perth-bound international flight have sustained injuries.

Twenty-one passengers and crew on a China Airlines flight from Hong Kong to Bangkok were taken to hospital after the plane hit unexpected severe turbulence shortly before landing.

A Spanish newspaper has released a video of last month's crash of a Spanair jetliner at Madrid airport in which 154 people were killed.

A strange odour which forced a Qantas jet carrying 133 passengers to make an emergency landing in Perth has been traced to a food oven.

The pilot of the Aeroflot jet that crashed killing all 88 people on board ignored commands from air traffic controllers, probably contributing to Russia's worst air disaster in two years, according to news reports today.

A passenger jet travelling from Moscow to the Ural Mountains city of Perm crashed while preparing to land early today, killing all 88 people aboard, officials said.

An aid flight operated by Cem Air and carrying 17 people has crashed on a ridge in eastern Congo.

Two runway incursions and an aircraft separation incident, all within two days, are being investigated by the US National Transportation Safety Board.

Pilot error and poor visibility caused the deadly One-Two-Go air crash in Thailand last year according to the official investigation.

A Comair flight from Cleveland to New York City made an emergency landing at the Wilkes-Barre/Scranton International Airport about 5p.m. on Friday.

An United Airlines Boeing 767-300 flying from San Francisco to Chicago with 240 passengers and nine crew had to return to San Francisco about 30 minutes after takeoff early on Saturday morning after one of the engines stalled and had to be shut down.

A plane carrying 350 crew and passengers was forced to make an emergency landing at Gatwick today after reports of a fire onboard.

A Lufthansa aircraft carrying 224 passengers and 12 crew members collided with a parked bus on a Frankfurt airport runway after arriving from Tehran on Thursday morning.

A Boeing 757's "unnecessarily fierce descent" during a collision-avoidance manoeuvre injured 20 passengers and crew members, four of them seriously, according to Taiwanese investigators.

American Airlines has determined that oil residue heated by the engine caused Flight 31, bound from Los Angeles to Honolulu, to return to Los Angeles International Airport on August 5.

Qantas' string of mechanical embarrassments continued over the last 24 hours with incidents severely delaying two services involving Boeing 747s.

An All Nippon Airways plane has made an emergency landing at Fukushima aiport because of engine trouble.

Graphic photographs showing the damage to the Qantas 747 in which an oxygen cylinder exploded have appeared on an Australian newspaper's website.

Aviation experts are bemused as to why passengers aboard an American Airlines Boeing 757 were evacuated using escapes slides at Los Angeles Airport.

Australia's air safety monitoring body has advised travellers "not to jump to conclusions" a string of maintenance problems affecting Qantas flights in the last nine days are linked.

Vietnam Airlines Corporation has issued a statement confirming the engine of one of its planes caught fire soon after landing in Tojkyo this week - but asserting there was never any danger to passengers.

An Embraer E170 jet operated by SkyAirWorld has been grounded after sustaining minor damage in a landing incident in stormy weather on Sunday.

The Australian Transport Safety Board has detailed progress on the probe into the cause of the holing of a Qantas Boeing 747 last Friday - and its subsequent de-pressurisation.

A Qantas Boeing 767-388 made an emergency landing in Adelaide last night after an undercarriage door failed to close after take-off.

Air accident investigators have appealed to passengers of the holed Qantas Boeing 747 to share any photographs or videos of the incident as the focus of the probe zeroes in on a missing oxygen cylinder.

Preliminary investigations into the cause of the holing of a Qantas Boeing 747 over southeast Asia on Friday are believed to show an oxygen cylinder exploded.

Australia's Civil Aviation Safety Authority (CASA) says the mid-flight holing of a Qantas Boeing 747 over Asia on Friday was probably not caused by corrosion, as some reports speculated.

The US National Transportation Safety Board will send a team of investigators to the Philippines to assist in the investigation of the Qantas emergency which resulted in the emergency landing at Manila.

Qantas says it has sent a replacement aircraft to bring home the 346 passengers and 19 crew stranded in Manila after a hole blew in the side of their plane mid-flight.

A civil aviation expert says the giant hole which appeared in the side of a Qantas 747 during Flight QF30 from Hong Kong to Melbourne yesterday was caused by corrosion - or an explosive device in a suitcase.

Australian authorities have classified this afternoon's emergency landing of a Qantas Airways plane in Manila as a "serious incident" - and despatched four investigators to inspect the plane.

A Qantas Airways Boeing 747 has made an emergency landing in Manila after a losing cabin pressurisation at about 29,000 ft.

An Air Mauritius aircraft had to abort a take-off at New Delhi airport after striking a large bird.

The US National Transportation Safety Board is investigating a near midair collision in Chicago.

AirAsia has added another route to its Asian network - from Pekan Baru, Indonesia to Singapore.

A recently-installed safety barrier at the end of a runway at Chicago's O'Hare airport appears to have reduced injuries after a Mexicana plane overshot the runway.

Following fears of an onboard fire, a South Korean airliner headed to New York has landed safely in northern Japan.

An Air India domestic flight declared an emergency shoertly before landing safely at Mumbai's international airport.

The co-pilot of a Boeing 717-200 substantially damaged in a hard landing at Darwin in February had expressed reservations to his superiors about his ability to land the plane just days before the incident.

The US National Transportation Safety Board ahs completed its on-site inspection of the aircraft involved in an incident earlier this week whilst carrying Democratic presidential candidate Barack Obama.