The previously unknown defects were

The previously unknown defects were discovered only after magnetic particle inspection procedures adhering
to ASTM standard practices were rigorously followed. Subsequent investigation and analysis of the indications revealed
no growth of the laps in service. Nevertheless, the corrective action defined that all forgings showing laps be removed
from service. Preventive measures involved critical review and revision of the forging process (so that future lots would
be properly forged) and revisions to the nondestructive evaluation (NDE) procedures at the forging supplier.

Results (Indonesian) 2:

Cacat yang tidak diketahui sebelumnya ditemukan hanya setelah prosedur pemeriksaan partikel magnetik mengikuti
praktek-praktek standar ASTM yang ketat diikuti. Penyelidikan berikutnya dan analisis indikasi mengungkapkan
tidak ada pertumbuhan lap dalam pelayanan. Namun demikian, tindakan korektif didefinisikan bahwa semua tempa menunjukkan lap dihapus
dari layanan. Langkah-langkah pencegahan yang terlibat tinjauan kritis dan revisi proses penempaan (sehingga banyak masa depan akan
ditempa dengan baik) dan revisi evaluasi tak rusak (NDE) prosedur di pemasok tempa.