LOST SOURCE
Manchester Township, NJ, 12/13/2025
"The US Navy master materials licensee reports a loss of 500 microcuries of Sr-90 in an inflight blade inspection system (IBIS), model number 12210-1, serial number 2136. During flight, a CH-53E [helicopter made] a precautionary emergency landing. [Upon landing] visible damage to one main rotor blade [and] three tail rotor blades [was observed,] resulting in the missing IBIS. The incident occurred on December 13, 2025, but…
nrc.gov/reading-rm/doc-collect

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