[Edokko]

It reads "Pilot's parachute (操縦者用落下傘)", and the number 10476 is the serial number of the chute, not the unit number. Dated June 1943.
I don't believe pilots carried any infantry rifles in their planes.

 

[Edokko]

The paratroopers would be carrying paratroop rifles and take down LMGs if any, worst case a non-takedown T-99 rifle especially after 1943, and would doubt very much they would be stuck with an old obsolete T-30 rifle, especially for a pilot, which this chute is for.

 

[Edokko]

In any case a bring back piece with personal relative's provenence is ALWAYS a great thing to have and take care of as family history. What was the serial number on that T-3o ?

 

[Edokko]

Pilots are worth a lot more than infantry soldiers, from any branch. View attachment 321524

Precisely. The cost, time, overall resource involved in training a pilot (although short cuts were glaringly evident towards end of war) will just not justify issuing him an old fully obsolete full length infantry rifle on one of his missions.