N6639R — Hughes OH-6A
DeregisteredChecked against FAA & NTSB records · as of Jul 22, 2026
N6639R appears in 1 NTSB accident record (most recent 2021, serious injuries). Registration and accident data compiled from public FAA and NTSB records as of Jul 22, 2026.
Aircraft record
Accident & incident history
A partial loss of engine power due to a leak in the fuel cell outlet valve.
Registration timeline
Ownership and registration events for this airframe (the Hughes OH-6A).
- Aug 7, 2021deregistered — Usda Aphis Ws Atoc
Earlier aircraft on this N-number
The tail number N6639R was previously assigned to different aircraft. A registration number can be reused across unrelated airframes over decades — these are not the Hughes OH-6A above.
- until Sep 11, 1989Beech A36 (s/n E1534)
- until Mar 23, 1971Beech C-45H (s/n 52-10635)
Frequently asked
- Has N6639R been in an accident?
- Yes. N6639R appears in 1 NTSB accident record, the most recent in 2021.
- What kind of aircraft is N6639R?
- N6639R is a Hughes OH-6A (rotorcraft), serial number 66-07874.
The full N6639R 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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