N6640Z — Hughes OH-6A
Active registrationChecked against FAA & NTSB records · as of Jul 22, 2026
N6640Z appears in 1 NTSB accident record (most recent 2017, no injuries). Registration and accident data compiled from public FAA and NTSB records as of Jul 22, 2026.
Aircraft record
- Serial number
- 66-16076
- Manufacturer
- Hughes
- Model
- OH-6A
- Category
- Rotorcraft
- Registration
- Active
- Registered to
- Usda Aphis Ws Atoc — Cedar City, UT
Accident & incident history
The fuel truck driver’s failure to stop before impacting the helicopter’s main rotor blades.
Registration timeline
Ownership and registration events for this airframe (the Hughes OH-6A).
- Jun 14, 2011registered — Usda Aphis Ws Atoc
Earlier aircraft on this N-number
The tail number N6640Z was previously assigned to a different aircraft. A registration number can be reused across unrelated airframes over decades — these are not the Hughes OH-6A above.
- until Jan 29, 1990Piper PA-25-235 (s/n 252235)
Frequently asked
- Has N6640Z been in an accident?
- Yes. N6640Z appears in 1 NTSB accident record, the most recent in 2017.
- What kind of aircraft is N6640Z?
- N6640Z is a Hughes OH-6A (rotorcraft), serial number 66-16076.
- Who is N6640Z registered to?
- N6640Z is registered to Usda Aphis Ws Atoc of Cedar City, UT. Registration status: active.
The full N6640Z report
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- Full NTSB investigation narratives for all 1 record — the complete text, not just the cause line
- Pre-buy question list generated from this aircraft’s actual records
- Complete registration & deregistration timeline, print-ready
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