F-35 Lightning II Cleared to Resume Flight Operations
March 4, 2013 9:27 AM
comment(s) - last by
Second grounding of the F-35 fleet in one month comes to an end
The entire Lockheed Martin
F-35 Lightning II
fleet spent six days grounded after a crack was discovered in an engine component of one aircraft. Flights resumed on Friday afternoon, following the conclusion of an investigation into the problem according to officials for the F-35 program.
"Following engineering analysis of the turbine blade which developed a crack, F-35 flight operations have been cleared to resume," the Joint Program Office and Pratt & Whitney said in a joint statement.
"This decision concludes a cautionary flight suspension that began on Feb. 21 after a 0.6 inch crack was found on a 3rd stage turbine blade of a test aircraft at the Edwards Air Force Base F-35 Integrated Test Facility during a routine inspection.
"The engine in question is part of the F-35 test aircraft fleet, and had been operated at extreme parameters in its mission to expand the F-35 flight envelope. Prolonged exposure to high levels of heat and other operational stressors on this specific engine were determined to be the cause of the crack."
The statement also noted that no signs of similar engine stress or other cracks were found during inspections of the remaining F135 engine inventory for the F-35 fleet. The investigation also determined that no engine redesign was required because the crack was only found in a single aircraft turbine blade.
The Pentagon also announced a new deal clearing a path to eventually lead to the purchase of Lot 8 in the LRIP plan for the F-35. The deal is worth $333,786,000.
This article is over a month old, voting and posting comments is disabled
We knew this was coming
3/4/2013 11:41:11 AM
A new engine design with a long driveshaft is going to be problematic since it digresses from traditional designs.
Just wait until the first STOVL F-35 vibrates itself apart when the driveshaft bearings fail.
RE: We knew this was coming
3/4/2013 4:52:41 PM
? turboshaft is nothing new.
RE: We knew this was coming
3/4/2013 7:49:29 PM
It was the A model jet that had the crack in the turbine blade.
You are referring to the F135-400 motor. I suspect that since the -400 motor has more cycles used per flight hour, it and accessories will be inspected more often. That is part of the reason the B is more expensive to operate.
"So if you want to save the planet, feel free to drive your Hummer. Just avoid the drive thru line at McDonalds." -- Michael Asher
Pentagon to Use Lithium-Ion Batteries for F-35 Jets Despite Boeing 787 Woes
February 13, 2013, 8:22 PM
Cool Science Video of the Day: Carnivorous Leech Eats Giant Jungle Worm
October 16, 2014, 6:44 PM
Facebook CEO and Founder, Mark Zuckerberg, Donates $25M to Fight Ebola
October 14, 2014, 5:06 PM
Chagrined Over Leaks, CDC Confirms First U.S. Ebola Diagnosis in Dallas, Texas
September 30, 2014, 5:55 PM
Nail Polish May Soon be Able to Detect Date Rape Drugs
August 26, 2014, 7:57 AM
SpaceX Falcon 9-R Rocket Suffers Malfunction, Self-Destructs During Test Flight
August 23, 2014, 9:36 AM
Texas Chosen as Site for SpaceX's First Commercial Launchpad
August 5, 2014, 1:44 PM
Most Popular Articles
Google Launches "Same-day Delivery" Subscription Service for $95/year
October 14, 2014, 10:37 AM
Google Announces Android 5.0 “Lollipop”, Nexus 9 Tablet, and Nexus 6 “Phablet”
October 15, 2014, 12:41 PM
Ireland to Close Loophole Apple and Google Used to Evade EU Taxes
October 13, 2014, 10:45 PM
Update: Motorola Droid Turbo Coming Oct 28, 48-hour Battery Life Confirmed
October 19, 2014, 9:19 PM
Samsung Develops 802.11 AD Wi-Fi, But Will it be Sunk by Poor Penetration?
October 14, 2014, 4:30 PM
Latest Blog Posts
The Surface Mini That Was Never Released Gets "Hands On" Treatment
Sep 26, 2014, 8:22 AM
ISIS Imposes Ban on Teaching Evolution in Iraq
Sep 17, 2014, 5:22 PM
Space Terrorism is a Looming Threat For the United States
Apr 23, 2014, 7:47 PM
Facebook Aims to Provide Internet to "Every Person in the World" with Drones, Satellites
Apr 1, 2014, 10:20 AM
Retail Mobile Sites Experience Outages in Light of Simplexity's Bankruptcy
Mar 14, 2014, 8:48 AM
More Blog Posts
Copyright 2014 DailyTech LLC. -
Terms, Conditions & Privacy Information