What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
This incident occured on a civil aircraft, conducting pao for the us forest service, during wildland firefighting water bucket operations.
Pilot noticed damage to aircraft during post flight. The damage consisted of the top of lefthand finlet of the horizontal stabilizer missing. This appears to have been caused by two main rotor-blades striking it. This is evidenced by paint missing on the two main rotor blades.
The pilot did not notice when the damage occurred and did not experience any change to aircraft control. It is unknow how or when the damage occurred, whether it was on the ground or inflight.
As the FAA filed it
THIS INCIDENT OCCURED ON A CIVIL AIRCRAFT, CONDUCTING PAO FOR THE US FOREST SERVICE, DURING WILDLAND FIREFIGHTING WATER BUCKET OPERATIONS.
PILOT NOTICED DAMAGE TO AIRCRAFT DURING POST FLIGHT. THE DAMAGE CONSISTED OF THE TOP OF LEFTHAND FINLET OF THE HORIZONTAL STABILIZER MISSING. THIS APPEARS TO HAVE BEEN CAUSED BY TWO MAIN ROTOR-BLADES STRIKING IT. THIS IS EVIDENCED BY PAINT MISSING ON THE TWO MAIN ROTOR BLADES.
THE PILOT DID NOT NOTICE WHEN THE DAMAGE OCCURRED AND DID NOT EXPERIENCE ANY CHANGE TO AIRCRAFT CONTROL. IT IS UNKNOW HOW OR WHEN THE DAMAGE OCCURRED, WHETHER IT WAS ON THE GROUND OR INFLIGHT.