| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 3<\/td>\n | Air cargo equipment\ufffd\u2014 Restraint straps\ufffd\u2014 <\/td>\n<\/tr>\n | ||||||
| 5<\/td>\n | Contents Page <\/td>\n<\/tr>\n | ||||||
| 6<\/td>\n | Foreword <\/td>\n<\/tr>\n | ||||||
| 7<\/td>\n | Air cargo equipment\ufffd\u2014 Restraint straps\ufffd\u2014 1\ufffd\ufffd\ufffd Scope 1.1\ufffd\ufffd\ufffd This part of ISO\ufffd16049 1.2\ufffd\ufffd\ufffd The same restraint strap assemblies can also be used in other applications such as: 1.3\ufffd\ufffd\ufffd This part of ISO\ufffd16049 1.4\ufffd\ufffd\ufffd When restraint strap assemblies are attached to the edge rails of a certified air cargo pa… 1.5\ufffd\ufffd\ufffd The use of reliable and guaranteed restraint strap assemblies does not alone ensure flight… 1.6\ufffd\ufffd\ufffd Subject to proper operating instructions in accordance with <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | 2\ufffd\ufffd\ufffd Normative references 3\ufffd\ufffd\ufffd Terms and definitions <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | 4\ufffd\ufffd\ufffd Design criteria 4.1\ufffd\ufffd\ufffd Compatibility 4.2\ufffd\ufffd\ufffd Ultimate load 4.3\ufffd\ufffd\ufffd Elongation 4.3.1\ufffd\ufffd\ufffd Care shall be taken in selecting the materials and design most appropriate to minimizing… 4.3.2\ufffd\ufffd\ufffd The total elongation of the complete restraint strap assembly under load, as measured be… 4.3.3\ufffd\ufffd\ufffd Webbing slippage through the tensioning device (see 4.3.4\ufffd\ufffd\ufffd The total elongation when submitted to intermediate loads shall not exceed the linear re… 4.4\ufffd\ufffd\ufffd Inflammability 4.4.1\ufffd\ufffd\ufffd The webbing, as used in the restraint strap assembly, i.e. including sewing and any trea… <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | 4.4.2\ufffd\ufffd\ufffd The inflammability test shall be performed on a minimum of three specimens, and the aver… 4.5\ufffd\ufffd\ufffd Environmental degradation 4.5.1\ufffd\ufffd\ufffd The available data concerning degradation of woven textile fibre performance when expose… 4.5.2\ufffd\ufffd\ufffd An expiry date after which the rated performance may not be expected to be maintained sh… 4.5.3\ufffd\ufffd\ufffd For environmental degradation assessment, it should be assumed that the restraint strap … 4.5.4\ufffd\ufffd\ufffd In addition, the strap assembly components and materials should be selected in order to … 4.6\ufffd\ufffd\ufffd Dimensions 4.6.1\ufffd\ufffd\ufffd Length <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | 4.6.2\ufffd\ufffd\ufffd Width 4.7\ufffd\ufffd\ufffd Tensioning device 4.7.1\ufffd\ufffd\ufffd The type of tensioning or tension retaining device shall be selected on agreement betwee… 4.7.2\ufffd\ufffd\ufffd The thickness of the device when in its latched position shall be kept to a minimum cons… 4.7.3\ufffd\ufffd\ufffd The loose end of the adjustable webbing shall be protected against fraying, and positive… 4.7.4\ufffd\ufffd\ufffd Tensioning devices of the \u201cflat\u201d one stroke types should provide, when actuated, a minimum 4.7.5\ufffd\ufffd\ufffd Tensioning device design shall aim at maximizing friction coefficients in order to obtai… 4.7.6\ufffd\ufffd\ufffd The tensioning device shall be equipped with a positive, self-engaging, locking system i… 4.7.7\ufffd\ufffd\ufffd The tensioning device shall be designed so that the locking system can be engaged and a … 4.7.8\ufffd\ufffd\ufffd The tensioning device shall be designed so that, in the absence of any tension, it is po… <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | 4.8\ufffd\ufffd\ufffd End fittings 4.8.1\ufffd\ufffd\ufffd The type(s) of end fittings, which may be different at each end of the restraint strap a… 4.8.2\ufffd\ufffd\ufffd The thickness of end fittings shall be kept to a minimum consistent with their type, in … 4.8.3\ufffd\ufffd\ufffd Flat hooks shall be equipped with a retainer preventing any risk of self or inadvertent … 4.8.4\ufffd\ufffd\ufffd Wire hooks, D rings, or equivalent shall be duly welded in order to prevent any risk of … 4.8.5\ufffd\ufffd\ufffd Two different end fittings may, at the purchaser’s option, be provided on one same end o… 4.9\ufffd\ufffd\ufffd Webbing and sewing 4.9.1\ufffd\ufffd\ufffd The materials and any treatment such as heat stabilization, flame resistance, dye, anti-… 4.9.2\ufffd\ufffd\ufffd All seams shall be made from thread of which the Young modulus does not exceed that of t… 4.9.3\ufffd\ufffd\ufffd Consideration should be given to anti abrasion treatment of the webbing, commensurate wi… 4.10\ufffd\ufffd\ufffd General 4.10.1\ufffd\ufffd\ufffd All parts or inner or outer edges of the tensioning device and the end fittings that ca… 4.10.2\ufffd\ufffd\ufffd All metal parts shall be coated. Consideration should be given to anti-corrosion treatm… <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | 4.10.3\ufffd\ufffd\ufffd There shall be no sharp edges, corners or protrusions that may come into contact with t… 4.10.4\ufffd\ufffd\ufffd The tensioning device, tension retaining device if any, and the end fittings shall be d… 5\ufffd\ufffd\ufffd Testing methods 5.1\ufffd\ufffd\ufffd General 5.1.1\ufffd\ufffd\ufffd The following tests shall be conducted in order to ensure that the integrity and functio… 5.1.2\ufffd\ufffd\ufffd The objective of the tests is to measure the performance of the complete restraint strap… 5.1.3\ufffd\ufffd\ufffd Three test specimens randomly selected from the same production batch shall be used for … 5.2\ufffd\ufffd\ufffd Testing apparatus 5.2.1\ufffd\ufffd\ufffd Use a certified and calibrated tensile testing machine with a load measuring accuracy of 5.2.2\ufffd\ufffd\ufffd Ensure that the machine is equipped with a load recording system (calibrated chart, dial… 5.2.3\ufffd\ufffd\ufffd In order to provide comparable results, the pulling clamps should have a uniform speed of 5.2.4\ufffd\ufffd\ufffd Prior to the test ensure that the machine is equipped with pulling attachments compatibl… 5.3\ufffd\ufffd\ufffd Load test 5.3.1\ufffd\ufffd\ufffd Step\ufffd1 <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | 5.3.2\ufffd\ufffd\ufffd Step\ufffd2 5.3.3\ufffd\ufffd\ufffd Step\ufffd3 5.3.4\ufffd\ufffd\ufffd Step\ufffd4 5.3.5\ufffd\ufffd\ufffd Step\ufffd5 5.3.6\ufffd\ufffd\ufffd Testing is deemed successful if rupture occurs at a load higher than the rated ultimate … 5.3.7\ufffd\ufffd\ufffd Repeat the test for the two other specimens. Record the results. Should one of the speci… 5.3.8\ufffd\ufffd\ufffd If the tested restraint strap assembly includes double stud fitting type end fittings, t… 5.4\ufffd\ufffd\ufffd Elongation test 5.4.1\ufffd\ufffd\ufffd The elongation test shall be performed on the same specimens simultaneously with the loa… 5.4.2\ufffd\ufffd\ufffd After step\ufffd1, two markers shall be taken on the specimen’s webbing, as far apart from ea… 5.4.3\ufffd\ufffd\ufffd Apply step\ufffd3; Measure the new distance ( <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | 5.4.4\ufffd\ufffd\ufffd Apply step\ufffd4. Measure the new distance ( 5.4.5\ufffd\ufffd\ufffd The measured elongation ( 5.4.6\ufffd\ufffd\ufffd Repeat the test for the two other specimens. Record the results. Average the values obta… 5.4.7\ufffd\ufffd\ufffd If the tested restraint strap assembly includes double stud fitting type end fittings, t… 5.5\ufffd\ufffd\ufffd Cyclic load test 5.5.1\ufffd\ufffd\ufffd A cyclic load test should be performed to simulate the recurrent load cycles resulting f… 5.5.2\ufffd\ufffd\ufffd The test apparatus is there to apply to the complete restraint strap assembly a tension … 5.5.3\ufffd\ufffd\ufffd The restraint strap assembly shall be submitted to 100 such cycles (or more, if specifie… 5.5.4\ufffd\ufffd\ufffd After the test, the restraint strap assembly shall be inspected for defects. There shall… 5.6\ufffd\ufffd\ufffd Inflammability test 5.7\ufffd\ufffd\ufffd Webbing elongation test 5.7.1\ufffd\ufffd\ufffd In addition to the elongation test of the complete restraint strap assembly specified in 5.7.2\ufffd\ufffd\ufffd The test tension loads to be used shall be those specified in steps\ufffd3 to 5 of 5.7.3\ufffd\ufffd\ufffd One of the test methods listed in the Bibliography may be used. 5.8\ufffd\ufffd\ufffd Webbing abrasion test 5.8.1\ufffd\ufffd\ufffd A webbing abrasion test shall be performed, commensurate with the expected service life … 5.8.2\ufffd\ufffd\ufffd After the specified abrasion test, steps 1, 2 and 5 of the load test specified in 5.8.3\ufffd\ufffd\ufffd One of the test methods listed in the Bibliography may be used for the abrasion test. <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | 5.9\ufffd\ufffd\ufffd Test record 5.9.1\ufffd\ufffd\ufffd The manufacturer shall maintain and hand over to the purchaser a restraint strap assembl… 5.9.2\ufffd\ufffd\ufffd The test results to be mentioned shall include: 6\ufffd\ufffd\ufffd Quality Control 6.1\ufffd\ufffd\ufffd Industry’s experience demonstrates the essential character of continuous quality control i… 6.2\ufffd\ufffd\ufffd In view of the possibility of such a minor change having been overlooked, detailed visual … 6.3\ufffd\ufffd\ufffd Recommended minimum sampling rates (one test sample normally consisting of three complete … 6.4\ufffd\ufffd\ufffd The parties (manufacturer and purchaser) shall contractually agree on a continuous (testin… <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | 7\ufffd\ufffd\ufffd Markings 7.1\ufffd\ufffd\ufffd Each restraint strap assembly in accordance with 7.2\ufffd\ufffd\ufffd The traceability code shall enable the unit’s manufacturing and (if recorded by the user) … 7.3\ufffd\ufffd\ufffd The markings may be in whole or in part by any of the following means: 7.4\ufffd\ufffd\ufffd If a label is provided, it is recommended that it also indicate the material of the webbin… 7.5\ufffd\ufffd\ufffd Double stud tie-down fittings with an omnidirectional rated load capacity of <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | 8\ufffd\ufffd\ufffd Options 9\ufffd\ufffd\ufffd Manufacturer’s instructions <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | 10\ufffd\ufffd\ufffd Operating instructions 10.1\ufffd\ufffd\ufffd The effectiveness and dependability of restraint strap assemblies in aircraft, even if pr… 10.2\ufffd\ufffd\ufffd Though it is not the intent of 10.3\ufffd\ufffd\ufffd Accordingly, air cargo operators are encouraged to: 10.4\ufffd\ufffd\ufffd The general utilization guidelines and the principles of tie-down calculation methods to … <\/td>\n<\/tr>\n | ||||||
| 23<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Air cargo equipment. Restraint straps – Design criteria and testing methods<\/b><\/p>\n |