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Conditions for approval required by: Julien Gauther
Certification of Aerospace Products to international quality Standards
Certification of Aerospace Products to international quality Standards
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EN2549-030014F:
Tensile tests on bolts were not carried out since ISO9152 requires this test for bolts with diameters equal or greater than 4 mm.
However, EN3037-030026AF were tensile tested.
Both references are long enough to be tensile tested.
Could you please tell us why we have this difference?
EN2549-040010F:
Just for information, EN2549, clause 6 deletes double shear test.
EN2549C080030F:
Why tensile tests were carried out on specimens instead of on bolts?
I assume this is due to short thread length (11,5 mm < 8×1,5 = 12) but we do have tensile test results for EN2549H100019F (thread length = 14,5 mm < 15 mm).
EN2870H060003F:
This bolt is too short to be tensile tested. In that case, tensile tests on specimens should be done.
Could you please check if tensile tests on specimens are available?
EN3037-040012RF: fluorescent penetrant inspection data are missing. Could you please fix this?
EN3381-040015RF:
Actual sample size for FPI is 80 parts. Manufacturing batch size is 962 parts.
In April 2019, LISI stated that they were in line with ISO2859-1 interpretation. Manufacturing batch number #475312 is dated November 2020. Could you please clarify?
EN4074-050012E:
Double shear test results are missing. Could you please provide them?
EN4127-050003:
This bolt is too short to be tensile tested. In that case, tensile tests on specimens should be done.
Could you please check if tensile tests on specimens are available?
EN4130-040014:
2 bolts were tensile tested instead of 3 (ISO9152 table 6). Could you please clarify?
EN4130-080028:
Tensile test results are missing. Could you please provide them?
EN4135H120072F:
Actual sample size for FPI is 50 parts. Manufacturing batch size is 270 parts.
In April 2019, LISI stated that they were in line with ISO2859-1 interpretation. Manufacturing batch number #962763 is dated January 2020. Could you please clarify?
EN4178-080004F:
This bolt is too short to be tensile tested. In that case, tensile tests on specimens should be done.
Could you please check if tensile tests on specimens are available?
Many thanks in advance
Best regards
Julien
Julien,
Below you will find our responses to the comments.
EN2549-030014F:
Tensile tests on bolts were not carried out since ISO9152 requires this test for bolts with diameters equal or greater than 4 mm.
However, EN3037-030026AF were tensile tested.
Both references are long enough to be tensile tested.
Could you please tell us why we have this difference?
? OF 434914: Although this is specified in the ISO9152 spec, we prefer to carry out the test on the finished part if possible. This may depend on the machine occupancy, the available tools, … for example.
EN2549-040010F:
Just for information, EN2549, clause 6 deletes double shear test.
? OK
EN2549C080030F:
Why tensile tests were carried out on specimens instead of on bolts?
I assume this is due to short thread length (11,5 mm < 8×1,5 = 12) but we do have tensile test results for EN2549H100019F (thread length = 14,5 mm < 15 mm).
? OF 478604: In both cases we comply with the specification ISO9152 but in principle we prefer to carry out the test on the finished parts if possible. This may depend on the machine occupancy, the available tools, … for example.
EN2870H060003F:
This bolt is too short to be tensile tested. In that case, tensile tests on specimens should be done.
Could you please check if tensile tests on specimens are available?
? OF 450808: The test specimen has been completed. You will find attached the amended Coc.
EN3037-040012RF: fluorescent penetrant inspection data are missing. Could you please fix this?
? OF 464901 : Error selecting the Coc. The CND has been completed. Attached you will find the Coc 464901 already amended during the last renewal in 2021. The initial Coc was issued on 03/16/2016 which explains the sampling of 20 pieces.
EN3381-040015RF:
Actual sample size for FPI is 80 parts. Manufacturing batch size is 962 parts.
In April 2019, LISI stated that they were in line with ISO2859-1 interpretation. Manufacturing batch number #475312 is dated November 2020. Could you please clarify?
? OF 475312 : 200 parts were indeed produced in NDT on this batch. You will find attached the amended Coc.
EN4074-050012E:
Double shear test results are missing. Could you please provide them?
? OF 468470 : Error selecting the Coc. Double shear has been completed. Attached you will find the Coc 468470 already amended during the last renewal in 2021.
EN4127-050003:
This bolt is too short to be tensile tested. In that case, tensile tests on specimens should be done.
Could you please check if tensile tests on specimens are available?
? OF 990428: The test specimen has been completed. You will find attached the amended Coc.
EN4130-040014:
2 bolts were tensile tested instead of 3 (ISO9152 table 6). Could you please clarify?
? OF 432969: 3 pieces have been tested in tensile test on this lot. You will find attached the amended Coc.
EN4130-080028:
Tensile test results are missing. Could you please provide them?
? OF 466333 : Error selecting the Coc. Tensile test has been completed. Attached you will find the Coc 466333 already amended during the last renewal in 2021.
EN4135H120072F:
Actual sample size for FPI is 50 parts. Manufacturing batch size is 270 parts.
In April 2019, LISI stated that they were in line with ISO2859-1 interpretation. Manufacturing batch number #962763 is dated January 2020. Could you please clarify?
? OF 962763 : This batch was manufactured in January 2019. This was before the ISO2859-1 compliance date.
EN4178-080004F:
This bolt is too short to be tensile tested. In that case, tensile tests on specimens should be done.
Could you please check if tensile tests on specimens are available?
? OF 986841: The test specimen has been completed. You will find attached the amended Coc.
Hi Nicolas,
Many thanks for your detailed answers!
I know that it represents a lot of work.
I am happy with all of them.
Approved from my side
Have a nice weekend
Julien