They estimated the remains of 400-500 US pilots lay scattered across the mountainous region and wanted them brought home for a proper burial.
The JPAC executes investigations and recovery missions for missing American military personnel. Some of the crash sites, however, lie across the border in Burma and were not accessible to US reconnaissance teams.
But recent requests by the US embassy in New Delhi to the Indian Government to dispatch teams to retrieve these pilots' remains had, for "bureaucratic" reasons, not been sanctioned.
India's Defence Ministry declined to comment as did the Foreign Office spokesman.
JPAC spokesman Tara Rigler, through the US embassy in New Delhi, stated they were working closely with the Indian Government to "resume recovery remains missions in northeast India as soon as possible" but did not elaborate.
Arunachal Pradesh, like some other adjoining north-eastern states - many of them wracked with insurgencies - remains closed to foreigners, particularly US nationals with all outsiders requiring special Protected Area Permits that are not easy to obtain.
This access denial to foreigners stems from the federal Government's belief the many armed separatist movements were instigated by some Christian missionaries, descendants of those who came to the region in the 19th century and were proscribed in the 1960s.
Arunachal is also claimed by the Chinese as part of southern Tibet in a long-running territorial dispute with India and officials hinted New Delhi's sensitivity to Beijing's concerns could also be the reason for not permitting US JPAC team's entry to the region.