Aviation regulator Directorate General of Civil Aviation (DGCA) had put up the proposal for stakeholders' consultation in May and it received 281 comments.
Nearly 278 or 98.93 per cent of the responses are strongly against the proposal, the official said on the condition of anonymity.
While a final decision is yet to be taken, the feedback may not be a reason for a reconsideration, he said.
At present, both category of pilots are required to serve a notice period of six months.
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The DGCA mooted the proposal after several airlines complained that pilots often "blackmail" and "hold the airlines to ransom" by threatening to quit, the official said.
A pilot's body had also written to the DGCA on the matter asking it to shun its plan on the grounds that "a notice period is an administrative and HR function" and, therefore, it was a matter between a pilot and his or her airline.
According to it, the proposal could be "exploitative" as a long notice period will allow airlines to be "vindictive" to those quitting their organisations.
A global pilots' grouping, the International Federation of Air Line Pilots' Associations (IFALPA), too wrote to the regulatory body saying the new rule could seriously impact aviation safety.
If the pilot is distracted and being forced to remain with the current airline, the potential for making an error in performing these tasks is greatly increased, it had written.
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