Pentagon Grounds F-35 Fleet After Crash -- Update
11 Octubre 2018 - 12:57PM
Noticias Dow Jones
By Doug Cameron
The Pentagon on Thursday said much of the global fleet of
Lockheed Martin Corp. F-35 combat jets was temporarily grounded to
investigate engine problems that may have caused a Marine Corps
plane crash last month.
Officials said the fleet of about 320 jets would undergo
inspections over the next 48 hours to check fuel tubes in engines
that are made by Pratt & Whitney, a unit of United Technologies
Corp.
The suspect tubes may be installed on around half of the global
fleet, limited to planes made before 2016, according to people
familiar with the F-35's production process. Some aircraft have
already been inspected and have resumed flying.
"If suspect fuel tubes are installed, the part will be removed
and replaced," said the F-35 Joint Program Office, which oversees
the purchase and operation of the planes.
The Pentagon in recent months has said parts shortages and a
backlog of maintenance work have left almost half of the U.S. fleet
of F-35 unable to fly on any given day. However, there is
sufficient inventory of the fuel pipes and production capacity to
boost stocks, according to people familiar with the situation.
Lockheed Martin has resumed flying planes coming off its
production line in Fort Worth, Texas, and said in a statement that
it is supporting the review and working with Pratt & Whitney to
"limit disruption to the fleet."
United Technologies shares were down 0.4% on Thursday, while
Lockheed Martin shares fell about 1.2%.
The grounding comes amid a debate over the reliability and
safety of U.S. military aircraft. Defense Secretary Jim Mattis
recently called for improvements to the fleet. Military officials
have said the airfleet suffered from budget cuts in recent years
that have been reversed.
The F-35 fleet was temporarily grounded in 2014 following a fuel
tank fire on a jet preparing for takeoff. Pratt & Whitney paid
for repairs and a design fix to resolve the issue.
The F-35B jet that crashed in South Carolina on Sept. 28 is a
different model. The pilot ejected safely.
The F-35B has a single Pratt & Whitney engine and a lift fan
made by Rolls-Royce Holdings PLC that allows it to take off and
land vertically.
Britain's Ministry of Defense, which is conducting trials of the
jet on an aircraft carrier off the U.S. East Coast, said Thursday
that it was inspecting its planes as well. One plane resumed flying
Wednesday after inspectors found the part under scrutiny wasn't in
use on the jet.
The F-35, used by the U.S. Air Force and the Marine Corps, is
also due to start flying from Navy aircraft carriers next year.
Italy, the Netherlands, Israel and Norway are also flying the
planes.
Israel, which used an F-35 in combat for the first time earlier
this year, said it was inspecting its own fleet, though aircraft
remained available for flying if required.
Lockheed Martin earlier this month secured a $11.5 billion deal
for the next batch of F-35 jets, which included new incentives and
penalties to improve its production performance after some planes
were delivered late. The company had to freeze production for a
time earlier this year because of a separate fuel-system
problem.
--Robert Wall contributed to this article.
Write to Doug Cameron at doug.cameron@wsj.com
(END) Dow Jones Newswires
October 11, 2018 13:42 ET (17:42 GMT)
Copyright (c) 2018 Dow Jones & Company, Inc.
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