PaintSquare.com
Follow us on Twitter Follow us on LinkedIn Like us on Facebook Follow us on Instagram Visit the TPC Store
Search the site

 

Advertisement

PaintSquare


Coatings Industry News

Main News Page


Turbine Corrosion to Blame for 2016 Jet Incident

Thursday, March 8, 2018

More items for Quality Control
More items from India

Comment | More

A 2016 incident that grounded a passenger jet in India has been blamed on the corrosion of an power turbine blade in the plane’s engine, according to a newly released investigation report.

India’s Aircraft Accident Investigation Board released the new report, detailing what it calls a “serious incident” involving Jet Airways Flight 9W 2839 on June 15, 2016. The 2008-built ATR 72-500 craft, known as VT-JCL, was en route from Bangalore to Mangalore when an engine fire and smoke in the cabin caused the crew to turn back to the Bangalore airport for an emergency landing. Three passengers reportedly suffered injuries.

Jet Airways jet
Laurent ERRERA, CC BY-SA 2.0, via Wikimedia Commons

A turbine blade failure caused by corrosion led to smoke in the cabin of a Jet Airways ATR 72-500 plane similar to this one.

The investigation zeroed in on the airplane’s right engine, a Pratt & Whitney PW127M, which experienced a blade failure, leading to an oil leak that eventually resulted in smoke that entered the cabin. The blade failure, according to the report, was likely due to a layer of corrosion detected near the fatigue origin region of the blade.

Sulfidation Cited

The report indicates that sulfidation corrosion, which occurs at high temperatures, may have contributed to the cracking. Sulfidation would likely have been brought about by the sulfur in jet fuel, and can also be caused by sulfur in salts and air pollution.

Sulfidation, according to the report, cannot be completely avoided, but “is generally contained by desalination/desulfidation wash and regular monitoring to detect and replace affected components.” The process can be exacerbated by the presence of the element niobium in the alloy the part is constructed of. Two of three blade failures on planes owned by Mumbai-based Jet Airways, including VT-JCL, involved niobium-rich parts, according to the report.

Second-stage Power Turbine blades like the one affected on the VT-JCL were subject to a 2015 service bulleting calling for their replacement with blades coating with chromium, but the replacement was not required until the supply of non-chromium-coated blades was exhausted, the report says. Chromium coatings would slow sulfidation corrosion.

The AAIB recommends the airline perform routine eddy current inspection on its fleet to detect possible corrosion, and look into replacing the niobium-rich Power Turbine blades with chromium-coated blades. While the report recommends closer inspection, it does not accuse the airline of any wrongdoing or negligence in relation to the incident.

   

Tagged categories: Aerospace; Corrosion

Comment Join the Conversation:

Sign in to our community to add your comments.

Advertisements
 
DeFelsko Corporation
 
PosiTector SST Soluble Salt Tester
 
Measures the concentration of soluble salts on metal surfaces. Use with all Bresle patch types including the reusable, adhesive-free PosiPatch.
 

 
Fischer Technology Inc.
 
Maximize Profits by Monitoring Coating Thickness
 
Learn more by contacting Fischer Technology today: 1.860.683.0781
 

 
SAFE Systems, Inc.
 
Portable Blast &
Recovery Equipment
 
Trailer or skid mounted blast and recovery equipment. Systems designed for maximum versatility, environmental compliance
and overall cost savings.
Call 1-800-634-7278
 

 
Industrial Vacuum Equipment Corp.
 
Hurricane Vacuums
& Dust Collectors
 
Vacuum and dust collector hose, filters and related accessories.
IndustrialVacuum.com
 

 
HoldTight Solutions Inc.
 
Full Surface Protection for Up to One Year
 
HT 365 is a preservation, single component, anti-corrosive coating, a water displacing agent, a lubricant, and a penetrating fluid. It creates an imperceptible thin-film coating that offers excellent salt contaminant and humidity protection. Contact your HoldTight® representative or visit Holdtight.com for more information.
 

 
KTA-Tator, Inc. - Corporate Office
 
New KTA Pipeline Inspection Kit
 
• Defelsko standard memory body
• Positector FTS 0-250 mils, cabled dry film thickness probe
• NEW Positector Shore D hardness probe
• All essential inspection equipment!
Visit www.ktagage.com
 

 
WINOA Group
 
Premium products for your blasting needs
 
Ready to use steel grit abrasives developed specially for air blasting applications.
 

 
SSPC: The Society for Protective Coatings
 
http://www.sspc.org/
 
Join SSPC and Enhance
Your Career !
 

 
Blastox/The TDJ Group, Inc.
 
Blastox® - One Step Lead Abatement
 
Sandblast additive delivered to jobsite pre-blended to eliminate hazardous abrasive wastes. Why mix, meter or apply at the job-site? Blast with ease and
Let your painters paint!
1(800)-252-7869
 

 
Mitsubishi Gas Chemical America
 
Performance Amine 1,3-BAC
 
A highly reactive cycloaliphatic diamine offering superior performance. Reasonable cost and curing efficacy makes it suitable for all types of epoxy resin applications.
 

 
 
 

Technology Publishing Co., 1501 Reedsdale Street, Suite 2008, Pittsburgh, PA 15233

TEL 1-412-431-8300  • FAX  1-412-431-5428  •  EMAIL webmaster@paintsquare.com


The Technology Publishing Network

Durability + Design PaintSquare the Journal of Protective Coatings & Linings Paint BidTracker

 
EXPLORE:      JPCL   |   PaintSquare News   |   Interact   |   Buying Guides   |   Webinars   |   Resources   |   Classifieds
REGISTER AND SUBSCRIBE:      Free PaintSquare Registration   |   Subscribe to JPCL   |   Subscribe to PaintSquare News
MORE:      About PaintSquare.com   |   Privacy Policy   |   Terms & Conditions   |   Support   |   Site Map   |   Search   |   Contact Us