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
The A350 XWB embarks on final certification phase
World route proving tour to visit 14 cities Share this...
airbus.com
FAA Statement-FAA Lifts Flight Restrictions for Ben Gurion International Airport
Agency continues to monitor the very fluid situation and will...
faa.gov
FAA Statement-Notice to Airmen Extended for Ben Gurion International Airport
Yesterday's notice is still in effect for up to an...
faa.gov
Hawaiian Airlines to order six A330-800neo aircraft
First U.S. airline to join launch list for new aircraft...
airbus.com
FAA Statement-Notice to Airmen Issued for Ben Gurion International Airport
U.S. airlines prohibited from flying to or from the airport...
faa.gov
A350 XWB MSN001 successfully conducted ‘Maximum Energy Rejected Take-Off’ test
Airbus has successfully performed the ‘Maximum Energy Rejected Take-Off’ (MERTO)...
airbus.com
TTTech Releases Next Generation of its TTP Controller
[Avionics Today July 21, 2014] TTTech has released the third generation...
aviationtoday.com
Exelis to Provide SANG ATM Upgrade
[Avionics Today July 21, 2014] Exelis is providing its GCA-2020...
aviationtoday.com
Ready to board: Airbus issues the latest edition of the “Shaping Efficiency” magazine
Step inside the all-new A350 XWB with Issue no. 6...
airbus.com
FAA Statement on Texas Equusearch UAS Court Decision
US Court of Appeals decides in favor of FAA. Agency...
faa.gov
Airbus’ record Farnborough Airshow sales pace continues…at the “Let’s Shop Airbus” boutique
During the Farnborough Airshow customers are eagerly lining up to...
airbus.com
Airbus expands its global collaboration with a new U.S. manufacturing technology partnership
Airbus’ worldwide network of relationships with suppliers, partners, institutions and...
airbus.com
No place like home: Airbus’ 2014 Farnborough Airshow success highlights its major UK presence
A record-breaking Farnborough Airshow – with more than $75 billion...
airbus.com
BAE Unveils NextGen Helmet Display System
[Avionics Today July 18, 2014] BAE Systems unveiled its next...
aviationtoday.com
IAI Expands Avionics Reach in Brazil
[Avionics Today July 18, 2014] Israel Aerospace Industries’ (IAI) subsidiary...
aviationtoday.com
FAA Statement-Expanded Notice to Airmen Released
U.S. flight operations suspended until further notice over eastern Ukraine....
faa.gov
FAA Statement on Malaysian Air Flight 17
FAA confirms carriers have voluntarily agreed not to operate in...
faa.gov
The A320neo: A recipe for success
The market confirmed the Airbus’ A320neo programme’s right “ingredients” with...
airbus.com
Reinforcing Airbus’ widebody leadership: A330neo is a winner at the Farnborough Airshow
Wrapping up its best performance ever at a biennial Farnborough...
airbus.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 +