mandag 11. januar 2021

Indonesia havariet - Curt Lewis

 

Sriwijaya 737-500 crash was carrier’s fifth 737 loss since 2008

The crash of Sriwijaya Air flight SJ182 follows a troubled safety record at the airline, which has lost five Boeing 737s since 2008, amid broader corporate troubles.

While only the official investigation will reveal what caused the 737-500 (PK-CLC) to plunge into the Java sea four minutes after taking off from Jakarta, killing 62 passengers and crew, it is clear that Sriwijaya has had safety challenges over the years.

PK-CLC in December 2017. The aircraft formerly served with Continental Airlines, and is managed by GECAS

Prior to the most recent incident, the carrier wrote off 737s in 2008, 2011, 2012, and 2017, according to Cirium fleets data. Unlike SJ182, the other four losses occurred during landing.

Only one of the accidents, in August 2008, resulted in the loss of life, with one person killed and 14 injured. During this accident a Sriwijaya 737-200 (PK-CJG) suffered an overrun on a wet runway when landing at Jambi. The only death was a farmer on the ground.

An investigation revealed that the aircraft had suffered a hydraulic failure, but the crew conducted the landing without fully considering the technical ramifications, particularly for the aircraft’s brakes, spoilers, and thrust reversers.

The December 2011 loss involved a 737-300 (PK-CKM) that overran another wet runway, this time at Yogyakarta. The aircraft landed at high speed, failed to stop on the runway, and its undercarriage collapsed when it came to rest on soft ground. The overrun followed an unstable approach in which no checklists were used. Pilot fatigue was also deemed to be a factor in this accident.

Half a year later, in June 2012, a Sriwijaya 737-400 (PK-CJV) lost directional control shortly after landing in heavy rain at Pontianak. The aircraft veered onto soft ground, causing the nose undercarriage to collapse. The aircraft also suffered damage during recovery.

In May 2017 a 737-300 (PK-CJC) made a runway overrun in stormy conditions while landing at Manokwari after a service from Sorong.

Prior to SJ182 crash, the average age of the four lost 737s was 22.4 years, which could have contributed to the decision not to repair the aircraft for a return to service.

The carrier is listed as having 10 aircraft in service, all 737s, and 17 in storage. It also has an order for a pair of 737 Max 9s. Its sister carrier Nam Air has 11 737-500s, of which six are in service and five in storage, as well as five ATR 72-600s, of which three are in service and two in storage.

In early 2020 Indonesian media reports indicated that a half of Sriwijaya’s fleet was grounded owing to a lack of spare parts.

Apart from safety issues, the carrier has had a challenging time in the cutthroat world of Indonesia’s airline industry. During the late 2010s it was a victim of the price war waged between Indonesia’s two dominant carriers, Garuda Indonesia and Lion Air. One observer says that the airline’s “lack of scale” is a major handicap.

In 2018 Sriwijaya was on the verge of collapse, but in November 2018 it formed a deal whereby Garuda low-cost unit Citilink would manage its operations and finances. One objective of the effort was to look at ways to reduce Sriwijaya’s debt owed to Garuda. This deal fell apart in late 2019, however, over disagreements about the composition of Sriwijaya’s management team.

Months after the Garuda deal fell through, Indonesia’s air transport sector was hammered by the coronavirus pandemic.


Factbox: Details of airplane and airline in Indonesia crash

(Reuters) - Here are some facts about the airplane and airline involved in the crash of a Boeing 737-500 jet operated by Sriwijaya Air on an Indonesian domestic flight on Saturday, with 62 people on board.

BOEING 737-500
The Boeing 737-500 is part of the 737 family, the world’s most-flown commercial aircraft series. It was developed in the 1960s to serve short- or medium-length routes.

The 737-500 entered service in 1990 and comes from the second of four generations of 737, dubbed 737 Classic.

It shares only limited features with the fourth and latest generation, Boeing’s problem-plagued 737 MAX, and does not have the flawed cockpit software that contributed to two fatal crashes and triggered the MAX’s 20-month grounding.

But the 737-500 has mostly been phased out in favour of younger, more fuel-efficient models for economic reasons.

The aircraft that crashed was almost 27 years old and was originally flown by carriers in the United States.

Commercial jets typically fly up to 25 years before being scrapped, but are built to last longer.

Boeing delivered a total of 10,050 of the 737s developed before the MAX, including 389 of the 737-500 model.

The 737-500 has been involved in four fatal crashes in Russia, Tunisia and Egypt, which investigators linked to factors including pilot performance, training or weather, according to Aviation Safety Network, an online safety database.

The worst crash involved an Aeroflot 737-500 with the loss of 88 lives in Perm, Russia, in 2008.

The 737-500 is designed to hold 145 people but those flown by Sriwijaya are configured for 120, according to its website.

Its engines are built by French-American CFM International, co-owned by General Electric and France’s Safran.

SRIWIJAYA AIR
Founded in 2003, Jakarta-based Sriwijaya Air group flies largely to domestic locations in Indonesia as well as limited service to foreign destinations including Penang in Malaysia.

The loss-making airline is roughly the fifth largest carrier in Indonesia by flights scheduled, with some 10% of the local market, according to aviation data firm Cirium.

Its operations and finances were briefly run by Citilink, the low-cost arm of state carrier Garuda after losses raised questions over its survival, but it ended the deal in 2019.

The airline has a solid safety record with no onboard casualties in four incidents recorded on the Aviation Safety Network database, though a farmer was killed when a Boeing 737-200 left the runway in 2008 following a hydraulic problem.

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