It also “coughs”, as the smooth airflow is interrupted, as turbulence and pressure fluctuations are created within the turbine. But reasons like worn/dirty/contaminated compressor parts, and in-flight icing can also trigger it. So does operate beyond the engine design envelope or improper engine handling.
By Hemant Arjyal May 04, 2023
Assuming that the Indian side has a valid concern, even as a layman, I feel it is not normally possible to stop such low strength signal crossing over the border. With India being so sensitive about transgression, it must have found a novel way to block such signals at the border.
By Hemant Arjyal Mar 26, 2023
It is interesting that Edmund Hillary was instrumental in "preparing" the landing strip in the mountain pasture of Mingbo (4,573m) in the shadows of AmaDablam around that time and was approached by Capt. Schrieber, a Pilatus pilot, to know if it was possible to build a suitable strip for unloading supplies in the Khumbu region.
By Hemant Arjyal Jan 06, 2023