Bengaluru(PTI): The failure of Russia's Luna-25 moon mission will have no impact on ISRO's Chandrayaan-3 lunar venture, according to top Indian space scientists.

The Luna-25 spacecraft crashed into the Moon after it spun into an uncontrolled orbit, Russia's Roscosmos space agency said on August 20.

"It does not have any impact," K Sivan, who was heading ISRO when the Chandrayaan-2 mission was launched in 2019, told PTI on Monday when asked if ISRO would be under additional pressure ahead of the soft landing, following the Russian setback.

Chandrayaan-3 mission's lander module with a rover in its belly is expected to touch down on the surface of the Moon around 6.04 pm on Wednesday, ISRO had said on Sunday.

"It (Chandrayaan-3 mission) is going on as per plan. It (soft landing) will be done accordingly, Sivan said. "We are hoping that this time (unlike Chandrayaan-2) it (the touchdown) will be successful".

Former ISRO Chairman G Madhavan Nair dismissed talk in some quarters that India and Russia were engaged in a race to the Moon, and termed the crash-landing of Luna-25 as unfortunate.

"I know the (lander) module. It was ready way back in 2008. When I visited the lab (in Russia), they showed me the module. They didn't have the resources to fly (then), so it had been kept in cold storage for a long time. Now only they had resources (to launch)," he told PTI.

Ruling out any impact on the Chandrayaan-3 mission launched on July 14, Nair said India's venture is totally self-sufficient and "we are not dependent on them (Russia)". Right now, India's space cooperation with Russia is limited to training of Indian astronauts for the Gaganyaan human space flight mission.

"So, had it (Luna-25) landed, our data and their (Russian) data (collected based on experiments on the lunar surface) would have been complementary," he said.

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Mumbai (PTI): Aviation watchdog DGCA on Friday eased the flight duty norms by allowing substitution of leaves with a weekly rest period amid massive operational disruptions at IndiGo, according to sources.

As per the revised Flight Duty Time Limitations (FDTL) norms, "no leave shall be substituted for weekly rest", which means that weekly rest period and leaves are to be treated separately. The clause was part of efforts to address fatigue issues among the pilots.

Citing IndiGo flight disruptions, sources told PTI that the Directorate General of Civil Aviation (DGCA) has decided to withdraw the provision 'no leave shall be substituted for weekly rest' from the FDTL norms.

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"In view of the ongoing operational disruptions and representations received from various airlines regarding the need to ensure continuity and stability of operations, it has been considered necessary to review the said provision," DGCA said in a communication dated December 5.

The gaps in planning ahead of the implementation of the revised FDTL, the second phase of which came into force from November 1, have resulted in crew shortage at IndiGo and is one of the key reasons for the current disruptions.