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
Airbus and Chinese partners agree on wide-body cooperation
Airbus A330 Completion and Delivery Centre to be built in...
airbus.com
Vietnam Airlines signs first Airbus Flight Hour Services (FHS) agreement for A350 XWB
Ensuring the highest performance for Vietnam Airlines’ A350 fleet from...
airbus.com
FAA and GA Community Focus on Safety
Statement from FAA Deputy Administrator Mike Whitaker:Improving general aviation (GA)...
faa.gov
Dont Fly With Fireworks
If youre flying this July 4th holiday, be sure to...
faa.gov
FAA Posts Second Video in New Safety Information Video Series
June 30- The Federal Aviation Administration (FAA) has posted the...
faa.gov
FAA: Washington DC is a NO DRONE ZONE
June 30- As the July 4 holiday approaches, the Federal...
faa.gov
Building momentum: Vietnam Airlines becomes second operator of the game-changing A350 XWB
The operator base for Airbus’ new-generation A350 XWB is extending...
airbus.com
Vietnam Airlines becomes world’s second operator of the A350 XWB
New levels of comfort and efficiency for carrier’s long haul...
airbus.com
Reports: Schools Banned From Enrolling Vets
Helicopter flight schools in Arizona, Florida, Texas and Washington have...
aviationtoday.com
Erickson to Provide Training for Uruguayan Helicopter Pilots
[Avionics Today 06-26-2015] Aviation services provider Erickson Inc., has contracted...
aviationtoday.com
Littelfuse Introduces TVS Diodes for Avionics
Littelfuse TVS HR diodes. Photo: Littelfuse [Avionics Today 06-26-2015] Littelfuse...
aviationtoday.com
Kuwait Airways receives its first A330-200
Fleet upgrade continues with the world’s most versatile wide-body Share...
airbus.com
Boeing Completes C-17 Training Network Build Out
C-17 training at Altus Air Force Base, Okla. Photo: Boeing...
aviationtoday.com
Dennis Muilenburg Tapped as Next Boeing CEO
Dennis A. Muilenburg, Boeing president and chief executive officer effective...
aviationtoday.com
Aspen Avionics Touts GPS Company Accord Technology Acquisition
[Avionics Today 06-24-2015] Aspen Avionics has acquired Accord Technology (AT)...
aviationtoday.com
Spherea Test & Services Leads Consortium to Build Open-Air Test Cells for Safran
[Avionics Today 06-25-2015] Snecma (Safran) has awarded a consortium composed...
aviationtoday.com
CTS800 Engine Chosen for Turkish Helicopters
The Light Helicopter Turbine Engine Company (LHTEC), a 50-50 partnership...
aviationtoday.com
Executive Q&A: Steve Sargeant, Marvin Test Solutions' CEO
With continued technological innovation and the constant need to retrofit...
aviationtoday.com
Italian Air Force Shows Off HH-101A “Caesar”
Italy’s air force introduced dignitaries and the media to its...
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 +