Quantcast AGE CONTROL AND SERVICE LIFE

Share on Google+Share on FacebookShare on LinkedInShare on TwitterShare on DiggShare on Stumble Upon
Custom Search
 
  
AGE CONTROL AND SERVICE LIFE Hose or hose assemblies fabricated from age-sensitive materials are subject to age control. The following definitions are provided to clarify age control, acceptance life, shelf life, and service life: • Age control—The efforts made during manufacture, purchase, and the storage of age- sensitive items and parts made from natural or synthetic rubber materials to assure conformance to the applicable material and performance specifi- cations. Age control is further defined in terms of acceptance life and shelf life. • Acceptance life—The period of time from cure date to the procuring activity’s (organizational-, intermediate-, or depot-level activity) date of acceptance. • Shelf life—The period of time from the date of acceptance or delivery by the organizational-, intermediate-, or depot-level activity to the date of use. • Service life—The period of time from the date of installation to the date of removal. Installation date of the hose or hose assemblies must be identified by a tag. See figure 5-5. Acceptance Life and Shelf Life for Synthetic Rubber Hose and Hose Assemblies The acceptance life (MIL-STD-1523) and shelf life (DOD 4140.27M) for synthetic rubber hose and hose assemblies are established as follows: • Synthetic rubber hose, bulk or assembly, must not exceed 8 years (32 quarters) from the cure date, which must be stenciled on the rubber covering of the bulk hose or provided on an identification band on the metal braid hose or on the hose assemblies. • Synthetic rubber hose and hose assemblies must not exceed 5 years (20 quarters) from the date of delivery to the organizational-, intermediate-, or depot-level activity.    The repair activity maintains a record of delivery dates for bulk hose and hose assemblies to monitor shelf life expiration dates. NOTE: Teflon® (PTFE) rubber hose and hose assemblies do not have shelf life limitations. Service Life for Synthetic Rubber Hose Assemblies Service life is 7 years (28 quarters) for synthetic rubber hoses in critical applications; that is, medium- and high-pressure synthetic rubber hoses exposed to heat, weather, or fuel. NOTE: Service life for Teflon® (PTFE) hose assemblies is determined by CFA and may be on-conditional replacement or hard-time replacement. Rejection Standards Rejection and replacement of hose or hose assemblies after inspections are based on the standards normally specified in the applicable maintenance instruction manual, maintenance requirement cards, and depot-level specifications. Where rejection standards are not specifically outlined or if doubt exists as to the acceptability of a hose or hose assembly, replace the hose or hose assembly. NOTE: Teflon® (PTFE) hose assemblies are replaced only on a conditional basis. STORAGE Hose and hose assemblies fabricated from age-sensitive materials are subject to deterioration by oxygen, ozone, sunlight, heat, moisture, or other environmental factors. These types of hoses and hose assemblies should be stored in a dark, cool, dry place protected from circulating air, sunlight, fuel, oil, water, dust, and ozone (ozone may be generated in an atmosphere where electricity is discharged through oxygen or ambient air). Store hose or hose assemblies by sealing both ends of bulk hose. Cap or plug each hose or hose assembly. Store hose or hose assemblies on racks that support and protect them. Store hose or hose assemblies so that the oldest items are issued first. CAUTION Do not store hose or hose assemblies in piles. Improper storage will cause accelerated deterioration due to both heat and moisture factors. 5-28



Aviation News
FAA Offers Another Method to View Aircraft Rescue and Firefighting Video
The FAA is making its Introduction to Aircraft Rescue and...
faa.gov
Esterline Sees Slow First Quarter, Expects Pick Up in 2015
[Avionics Today 03-06-2015] Esterline reported results for its first fiscal...
aviationtoday.com
Scottish ATCs Make Way for Direct Route Airspace
Workers at Prestwick ATC Center. Photo: NATS Press Office [Avionics...
aviationtoday.com
Inmarsat Government to Introduce LAISR Service in June
Inmarsat headquarters. Photo: Clive Darra via flickr [Avionics Today 03-05-2015]...
aviationtoday.com
MD Helicopters Sees Increase in Military Sales, Tilton Says
MD Helicopters has experienced growth in its military helicopter business...
aviationtoday.com
Focus on innovation: building your own cockpit
The IKEA superstore in Toulouse, France isn't the obvious starting...
airbus.com
Timely Reminder for Budget Brokers: Looking Ahead to FY16
Last month, the Department of Defense (DoD) released its Fiscal...
aviationtoday.com
India to Institute ADS-B with Aireon
Bahrain International Airport. Photo: Bahrain International Airport [Avionics Today 03-04-2015]...
aviationtoday.com
FAA Dedicates New Airport Traffic Control Tower at Fort Lauderdale Airport
New tower enables controllers to provide the safest, most efficient...
faa.gov
Bell Helicopter Focusing On V-280 In Light Of Army Aviation Restructuring
Bell Helicopter is focusing on its V-280 third-generation tilt-rotor aircraft...
aviationtoday.com
International Military Helicopter Conference Focuses on Budget, Resource Management
The Finnish army has now received 20 NH-90s, although availability...
aviationtoday.com
Aerolineas Argentinas receives first of four new A330-200s on order
Versatile, flexible, economic A330s to fuel Airline’s fleet renewal Share...
airbus.com
Honeywell and OneWeb to Bring IFC to Business, Commercial, Military Aviation
Digital rendering of coverage from OneWeb’s future satellite constellation. Photo:...
aviationtoday.com
AirServices Australia Looks to Beef Up ATM with New Partnerships
Airservices Australia air traffic control tower. Photo: Airservices Australia [Avionics...
aviationtoday.com
Airbus and Oracle Team USA: one step closer to the 2017 America’s Cup yacht race
Airbus’ technology partnership with the Oracle Team USA sailing squad...
airbus.com
Airbus A350 XWB – Welcome and “Grüß Gott” in Munich
First visit of an A350 XWB to Munich International Airport...
airbus.com
Airbus increases A320 rate, adjusts A330 for NEO transition
Airbus has decided to further increase the production rate for...
airbus.com
CPI Scores $49 Contract to Provide US Air Force T-38C Modification Kits
[Avionics Today 02-27-2015] CPI Aerostructures has won a $49 million...
aviationtoday.com
Lockheed Martin Upgrades Royal Australian Air Force C-130J Maintenance Training
Lockheed Martin C-130J virtual maintenance trainer. Photo: Lockheed Martin [Avionics...
aviationtoday.com
CPI Scores $49 Million Contract to Provide US Air Force T-38C Modification Kits
[Avionics Today 02-27-2015] CPI Aerostructures has won a $49 million...
aviationtoday.com


Privacy Statement - Copyright Information. - Contact Us

comments powered by Disqus

Integrated Publishing, Inc.
9438 US Hwy 19N #311 Port Richey, FL 34668

Phone For Parts Inquiries: (727) 755-3260
Google +