If at any time the operation is deemed to be a threat to other airspace buyers or persons and property on the bottom, the Procedure will stop until such time as the problems that were causing the unsafe problems are tackled/remedied. Flight operations mustn't resume till the issues are solved. https://beauwfnjr.answerblogs.com/32182859/5-simple-techniques-for-digital-terrain-modeling-dtm-in-bd