Falling Skies Tarkov: Quest Help

In the nature reserve, I came across a crashed plane, or rather what remains of it. I couldn't determine the cause of the accident after examining the wreckage. I should ask the shopkeepers, maybe someone knows more. I have a feeling this plane is important.

• Locate the crashed aircraft
• Reach loyalty level 2 with Prapor.
• Question shopkeepers about the crashed plane.
• Gather information from the therapist.
  • Give $2,000 in cash to the therapist (optional).
• Retrieve the USB drive from one of the G-Wagon SUVs (coastline near the tunnel).
• Return the USB drive to Prapor
  • Waiting for Prapor
• Retrieve the flight recorder from the aircraft
• Leave the flight recorder at the specified location (coastline in the corner room of the house on Fisherman's Island).
• Visit Prapor.
  • Give him two tools.
  • Give him 3 rechargeable batteries.
  • Give him 5 printed circuit boards.
    • Wait longer for Prapor.
• Give Prapor the crew transcript.
• Give Prapor the secure USB drive from Elektronik.
  • Wait for Prapor.
• Retrieve the armored briefcase and choose one of the following options:
  • Return the armored briefcase to Prapor
  • Keep the armored briefcase for yourself (*Note: if you choose this option, you will lose almost all of your reputation with Prapor.)