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ATR 42-500 Several groundings Aug 2011
Drukair fleet: Leased ATR 42-500 June 2011
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29 August 2011
ATR 42-500: Several groundings

Fifth grounding in three months

For at least the fifth time, in less than three months, a technical problem has grounded Drukair's ATR aircraft yet again.

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A leak in the ATR 42-500's hydraulic system is the latest technical problem to plague the twin turbo propeller aircraft. "As per engineering department, ATR is having hydraulic break system leak," said Drukair CEO, Tandin Jamso. He acknowledged that the problem was serious enough to ground the 48-seater aircraft. The hydraulic system is required, among others, to utilise the aircraft's wheel brakes.

The aircraft is expected to be grounded until Wednesday, according to the CEO. Spare parts from the USA are scheduled to arrive on that day.

The last grounding, which lasted for five days and ended only a week ago, was also because of a technical problem. The ATR's de-icing boot on one of its wings required replacing after it was found ruptured. The de-icing boot is a rubber device on the front surface edge of aircraft wings that allow for mechanical de-icing. The front surface edge of an aircraft is an area, where ice is likely to form and disrupt airflow, which can lead to loss of control.

A damaged wheel bearing in its nose landing gear grounded the ATR for about two weeks, earlier this month. The entire nose landing gear had to be shipped to Singapore for repair.

Prior to this, the ATR required two more groundings to prevent the airline's only two pilots qualified to fly the aircraft, from exceeding permitted flying hours.

The ATR was inducted into the Drukair fleet in mid-June after another two-week delay, for painting purposes, according to the airline.

On whether the national airline is concerned with the recent spate of technical problems, Tandin Jamso, pointed out that the airline considers the ATR still in "good condition" and "fairly new". He said that the aircraft, despite its age of nine years, had flown a little more than 3,300 hours. Drukair's airbus jets fly that amount in one year, he added.

The ATR, which previously was used by the French Polynesian government of Tahiti as a VIP aircraft, had been parked most of the time, said Tandin Jamso, adding that as a result, such "unforeseen" technical issues were bound to arise. He compared it to a car parked in the garage for a long time.

Prior to purchasing the aircraft, a technical examination by foreign experts had been carried out, said Tandin Jamso. He added that all technical checks as required by regulations had been conducted. Similarly, the French Polynesian government, in a previous email interview, said that an independent team had conducted a technical check of the aircraft prior to sale.

Tandin Jamso said that Drukair engineers also carry out daily checks and maintenance of Drukair aircraft. The low hydraulics fluid level was discovered during such a check, he said, leading to the discovery of a damaged pipe.

The CEO said that the series of recent technical problems are simply coincidences and bad luck.

One of Drukair's airbus jets was also grounded for a number of days this month after an unusual bird strike. Following the incidents, the airline performed a three-day rimdro or prayer ceremony for its aircraft, employees, and other related matters. This is the ATR's second grounding since the rimdro.

Tandin Jamso said that passengers do not have to expect scheduled flight disruptions, as both airbus jets are on hand.

The department of civil aviation did not comment on the grounding, given that the issue had not yet been filed with the authority, as it took place during the weekend.

Contributed by Gyalsten K Dorji , KUENSEL, Bhutan's National Newspaper, August 2011

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18 June 2011
Drukair fleet: ATR 42-500

ATR arrived on 4 June 2011

Despite arriving 12 days ago, the national airline's third aircraft has not conducted any commercial flights.

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Drukair CEO, Tandin Jamso, attributed the delay to documentation checking by the department of civil aviation (DCA). The CEO added that he expected the process to be completed by today.

DCA director general, Phala Dorji, had earlier confirmedthat the process is a mandatory requirement. He said that DCA is auditing the leased aircraft's documents. Once completed, he said, the aircraft would receive a certificate of airworthiness and could fly.

Phala Dorji pointed out that there are no technical problems or safety issues with the aircraft.

The 48-seater twin propellor aircraft arrived on June 4 after a delay of about three weeks. The continued delay has meant several flight revisions for passengers, as Drukair had already created its summer flight schedule with the ATR in mind.

Drukair plans to use the ATR 42-500 on its shorter routes such as to Kolkata-India, Dhaka-Bangladesh, and Kathmandu-Nepal. It also is hoping to use the aircraft for domestic operations, but that is also subject to DCA approval.

The airline is expecting to save significantly using the smaller, less fuel consuming aircraft.

Contributed by Gyalsten K Dorji , KUENSEL, Bhutan's National Newspaper, June 2011

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The ATR 42-500

About ATR:

Founded in 1981, ATR has become the world leader on the market for 50 to 74 seat turboprop aircraft. From the beginning of the program, ATR has sold over 1,100 planes, which are used by 175 operators in over 90 countries. ATR planes have totaled over 21 million flight hours. ATR is a fifty-fifty partnership between two major European aeronautics players, Alenia Aeronautica (a Finmeccanica Group company) and EADS. ATR headquarters is located in Toulouse, South of France. ATR employs more than 800 people across Europe, with major operations in the Blagnac and St Martin aeras of the Midi Pyrénées region.

Source: ATR 2011

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