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 VOL. IV No.45
 Friday 8 November - 14 November 1996
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Updated every Friday by Saichon Paewsoongnern
 
TRAVEL & TOURISM
 

Boeing recommends test of 737 rudder units

Aerospace giant Beoing Co. has released a statement recommending that all 737 jetliners, the world’s most widely used passenger plane, be tested within ten days for potential safety problems in the rudder systems.
The 737’s rudder has been a focus of investigations into the still unexplained crashes of the Beoing aircraft in Colorado Springs in 1991 and in Pittsburgh in 1994.
Beoing said in a statement that its engineers, in conjunction with the National Transportation Safety Board (US), discovered the plane’s rudder power control, which is similar to a power steering unit in an automobile, could jam when subjected to unusually extreme temperatures.
Beoing has forwarded its recommendations to the Federal Aviation Administration (FAA), which is expected to soon make the recommendations mandatory.
It said if the rudder power control unit had a jamming problem, the airplane could roll to one direction and possibly go out of control if the pilot reacted incorrectly or if the plane was too close to the ground.
Boeing said the problem, which it referred to as “very unlikely”, had never been encountered in over 60 million flights worldwide.
It said investigations into the Colorado Springs and Pittsburgh crashes did not reveal any such jamming problem with either rudder power control unit.
But, the NTSB said it was still studying the data and its relevance to the crashes.
“While the NTSB supports Boeing’s efforts, we are doing a full analysis of this data to find out how it relates to the Pittsburgh and Colorado Springs accidents,” NTSB chairman Jim Hall said in a statement.
About 2,700 Beoing 737’s are n service worldwide.
After an initial test, Boeing said further tests would be required after every 250 flight hours, or about every 30 days for the average 737.
Boeing also said it was working on a modification to the 737 and that it would send materials and cover the costs for modifying all 737’s in operation. It declined to elaborate, but said the costs would not be substantial.
The modification will not be needed on the latest generation of 737’s, it said.
The National Transportation Safety Board said Boeing’s recommendation that operators carry out rudder tests on 737’s resulted from information that emerged during NTSB tests.
Hall said recent tests on 737 rudder components by NTSB’s investigative team in Seattle, and last month’s series of NTSB recommendations on 737’s, had indicated more areas for the FAA to consider in the safe operation of 737’s.


Earthweek: Week Ending Friday, October 25, 1996

Southland Firestorms

Hot and dry “Santa Ana” winds blowing over Southern California whipped up massive firestorms that stretched from inland valleys and mountains, to exclusive beach communities in Los Angeles and San Diego counties. Scores of homes were destroyed by the conflagrations, and the U.S. Marines were called in to help overburdened fire-fighters battle the blazes.

Hurricane Lili

Hurricane Lili caused some of the worst damage in decades as it raked across the heart of Cuba. As many as 5,600 houses were destroyed and vast tracts of sugar, banana and coffee crops were wiped out by the storm. Lili went on to batter the Bahamas before moving into North Atlantic where it was slow to lose its tropical characteristics. Remnants of the storm brought torrential rains to Labrador and were expected to lash northern Europe during the following week.

Typhoon Beth

At least four people were killed as typhoon Beth swept through Luzon Island in the northern Philippines. The storm later passed across the South China Sea and brought further heavy rainfall to already flood-stricken Vietnam.

Typhoon Carlo

Typhoon Carlo produced high winds and heavy rains over the northern Marianas Islands, then dissipated to the east of Japan.

Cyclone Antoinette

Tropical cyclone Antoinette formed briefly in the eastern Indian Ocean. This late-season storm produced gales and high surf to north-facing areas of Reunion and Mauritius, and was a minor threat to shipping lanes.

Arabian Cyclones

Weak tropical cyclones 05A and 05B passed harmlessly over the Arabian Sea. Such storms normally only form during a brief period during May and June, then again briefly in October and early November, before the waning Northern Hemisphere sun becomes to weak to spawn their development.

Record North-eastern Flooding

An Atlantic coastal storm brought rains said to be of “biblical proportions” during a two-day deluge over New England. Massachusetts and Maine were especially hard hit by inundations and high winds that caused widespread power failures.

Indian Inundations

Indian troops conducted a massive rescue operation in the country’s south as the death toll from heavy flooding surpassed 300. Rescuers recovered 138 bodies across the coastal state of Andhra Pradesh, while 148 others were missing and presumed drowned.

King’s Holly

Scientists in Australia say they have found a 40,000-year-old shrub that may be the world’s oldest living organism. The shrub has grown to cover two secluded river gullies in Tasmania’s remote south-western wilderness. Dubbed “King’s Holly,” the plant is believed to have begun life well before the last ice age, according to Stephen Harris of the Tasmania Parks and Wildlife Service. The shrub is a sterile species which clones itself, and does not need other plants to reproduce.

Adriatic Aftershocks

The historic Croatian town of Ston suffered further damage from ongoing swarms of earthquakes which have rocked the region for a month. No injuries were reported from the latest shaking, which registered a magnitude of 5.0 at 5:01 p.m. on Sunday. No injuries were reported

Kyushu Quake/Tsunami

One of the year’s strongest temblors rocked Japan’s southern island of Kyushu, producing a tsunami that swamped some coastal areas with three feet of water. Only minor structural damage was reported from the quake, which occurred at 11:44 p.m. Sunday from an epicentre beneath the seabed 30 miles (50 km) south-east of Miyazaki city. A tsunami tidal wave three feet (one metre) high was reported in the port of Miyazaki, with lower highs observed in other coastal communities. Only minor structural damage was reported due to the shaking. Strong aftershocks registering a magnitude of 6.2 were detected later in the week.

Western Australian Rattler

Western Australia’s southern coast was shaken by an earthquake centred on the Indian Ocean Floor on Friday, October 18. The magnitude 4.5 tremor was estimated to have occurred about 60 miles (100 km) west of Busselton, a town which lies on the south-western tip of the country. The quake occurred at 12:29 p.m. local time.

Mexican Pacific Tremors

Two tremors rattled Mexico on Thursday, October 17, but no damage or injuries were reported. The first registered a magnitude of 4.9 along the coast between the south-western states of Oaxaca and Guerrero at 8:51 p.m. The second was measured at magnitude 3.5 and hit the central states of Puebla and Morelos at 1:37 p.m.

Interior Alaskan Temblor

A sharp magnitude 6.1 temblor rocked a wide area of eastern Alaska and neighbouring parts of the Yukon Territory at 1:15 p.m. on Tuesday. The quake was centred about 115 miles south-east of Fairbanks, and was felt as far away as Whitehorse, capital of the Yukon Territory. Items were knocked off shelves in some areas of eastern Alaska, but no significant damage was reported.

Wyoming Tremor

Central Wyoming was rattled by a magnitude 4.1 tremor that was centred just north of the city of Casper. The shaking occurred at 7:27 a.m. on Saturday, and caused no damage or injuries.

European Parasite Invasion

European beekeepers are concerned over the spread of an Asian parasite, varroa, that threatens to decimate hives across the continent. Most keepers are reluctant to combat the plague with chemicals that might wind up in the honey supply. Peter Rosenkranz, head of the Apirian Research Center in Germany’s Baden-Wurttemberg State, says that the bees have no immune mechanism against varroa, and fears that there may soon be areas of Europe where the bees have completely died out.

Indian Attack

A rogue monkey has terrorised a northern Indian town, seriously injuring 17 women and children, according to the Press Trust of India. A hospital spokesperson in the Himalayan town of Udhampur said the monkey “almost gorged out the eyes of a three-year-old and injured the mother’s private parts.” Suman Anjali, one of the victims, said the monkey struck around noon when the men were away at work. “Now everybody is so scared that they don’t open doors after the menfolk leave in the morning,” said Anjali. The animal has yet to be captured or killed.

World temperatures:

The week’s coldest temperature recorded by the more than 6,500 world-wide synoptic reporting stations was at the U.S. Amundesen-Scott Antarctic Research Station located on the South Pole where the thermometer plunged to minus 71 degrees Fahrenheit (-57 degrees Celsius.)

The hottest weather was in the Paraguayan outpost of Prats-Gil, in the south-western plains of the country, where the maximum temperature reached 108 degrees Fahrenheit (42.4 degrees Celsius.)


HEADLINES [click on headline to view story]

Boeing recommends test of 737 rudder units

Earthweek: Week Ending Friday, October 25, 1996