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发帖数: 100 | 1 By Anurag Kotoky, Benjamin D Katz, and Rick Clough
February 11, 2018, 2:39 PM CST
Indian airline says Pratt-powered A320s had to turn around
Pratt & Whitney continues to struggle with seals on turbofan
Airbus SE’s most important aircraft just can’t shake its teething problems.
The European manufacturer has been forced to suspend some deliveries of its
A320neo jet following another issue with the engines supplied by Pratt &
Whitney. IndiGo, the Indian low-cost airline that’s the plane’s biggest
customer, on Sunday disclosed three in-flight shutdowns, and said pilots
have had to turn back before taking off in three other instances -- an
alarming new problem for a Pratt power plant that’s been hobbled by
glitches from the start.
Replacing the engines is the “best possible precautionary measure” to
avoid further mishaps, IndiGo spokesman Ajay Jasra said Sunday.
It’s impossible to overestimate the importance of the A320 for Airbus. It
put the European planemaker on the map three decades ago, allowing the
company to go from a speck in Boeing Co.’s rear-view mirror to powerful
equal in what has become a de-facto duopoly in the global civil-aircraft
market. Airbus churns out more than 50 of the aircraft each month, and the
promise of the neo with its more fuel-efficient engines turned the model
into the fastest seller in commercial aviation history, forcing Boeing to
respond with a refreshed 737.
Two Engines
Airbus has traditionally offered two engines options on the A320, and the
company maintained that approach on the neo. Customers can choose between
the Pratt & Whitney model and a type built by the CFM joint venture between
General Electric Co.and France’s Safran SA. For Pratt, the introduction of
the two-year-old neo was a chance to solidify its position in the lucrative
market for single-aisle planes, which form the backbone of most global
airline fleets.
Pratt, a unit of United Technologies Corp., invested $10 billion to develop
the geared turbofan, now its most important product. The latest issue
undermines its efforts to move past earlier snags, including a cooling
problem that marred its commercial introduction in early 2016, and
subsequent durability issues and delivery delays. Pratt said Friday that the
problem was isolated to “a limited subpopulation” of the engines, and had
to do with a “knife edge” compressor seal.
As many as 11 of the 113 Pratt-powered A320neos delivered by Airbus have
been grounded, according to people familiar with the matter, with 43 in-
service engines affected in total. All are from the most recent batches to
come off the engine-maker’s production line. Further turbines at both
Airbus and Pratt facilities are affected, they said.
Three of the grounded planes are at IndiGo, the airline said. Airbus
declined to identify the other airlines.
Shares of parent United Technologies fell 1.9 percent on Friday, the biggest
slide of any member of the Dow Jones Industrial Average, while Airbus
dropped 2.3 percent earlier in Paris.
Compensation Costs
If the latest problem leads to penalty payments to IndiGo and other
customers, it wouldn’t be the first time Pratt was on the hook financially.
Greg Hayes, chief executive officer of United Technologies, said last April
that Pratt incurred costs to retrofit the engines to address durability
issues, and related to “helping the airlines through some of this.” He
didn’t specify the exact amount, but he said “it’s not material.”
The early glitches at Pratt led many customers to wait on the sidelines: The
competing CFM engine outsold the GTF on the A320neo by a 10-to-1 margin in
early 2017. Pratt won several key orders late in the year as the earlier
issues subsided, and executives at Airbus and United Technologies said the
manufacturer seemed to be moving on from a difficult chapter.
Older Model
While Pratt works on a fix, IndiGo said it will take delivery of older, less
-efficient A320ceos to fuel its growth. Pratt is also working closely with
IndiGo to provide replacement engines, having replaced 69 of them in the
past 18 months.
IndiGo said Saturday that it canceled some flights after the European
Aviation Safety Agency warned of a new issue with the engines and said it
was investigating. The regulator said Friday that operators with planes
using two affected engines must stop flying them within three flight cycles.
Aircraft with one affected engine are restricted from certain extended-
range flights.
“Airbus and Pratt are working in close cooperation and will be swiftly
communicating on the way forward to regain normal operations and resume
aircraft deliveries,” spokesman Jasra said.
— With assistance by Jess Shankleman |
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