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N4640D N714RV N182SK N45820 N7GC N221AV N9032L N510RV N221AV N9032L N510RV N88EX N634MP N44CUB N301AK N920TP N44CUB N301AK N920TP N118WB N77VAN N4640D N714RV N182SK N4640D N714RV N182SK N45820 N7GC N221AV N9032L N510RV N221AV N9032L N510RV N88EX N634MP N44CUB N301AK N920TP N44CUB N301AK N920TP N118WB N77VAN N4640D N714RV N182SK N4640D N714RV N182SK N45820 N7GC N221AV N9032L N510RV N221AV N9032L N510RV N88EX N634MP N44CUB N301AK N920TP

N4640DWeatherly Aviation 620A

RestrictedP&W R-985 SERIESTwo Buttes, CO

Claim this aircraft

N4640D is a Weatherly Aviation 620A. It is a fixed-wing single-engine aircraft with 1 seat, powered by a P&W R-985 series rated at 450 horsepower. The registration is active, with the registrant based in Two Buttes, CO. Its restricted airworthiness certificate was issued in Mar 1990.

Only 7 Weatherly Aviation 620A here
No NTSB events on record

More like this:Weatherly Aviation 620A Aircraft in Colorado Restricted

1990

FAA record · Mar 1990 · Airworthiness

Airworthiness certificate issued — Restricted

Manufacturer: Weatherly Aviation. Model 620A. Serial 1531.

That's everything on file so far — TailWiki checks the FAA registry daily and adds new entries as N4640D's record changes.

More from Rons Air Service

FAA record

and 1 more registered to the same entity in CO.

Aircraft

ManufacturerWeatherly Aviation

Model620A

CategoryRestricted

TypeFixed-wing single-engine

Serial1531

EngineP&W R-985 SERIES

Horsepower450

Seats1

BasedTwo Buttes, CO

RegistrantRons Air Service INC

Safety record

No NTSB accidents or incidents on record

Checked against the public NTSB aviation database.

Registration history

Mar 1990

Airworthiness certificate issued

Owner locations generalized to city/state for privacy. Ownership lineage grows as TailWiki tracks daily FAA updates.

View earlier registration history

TailWiki has tracked this tail since Aug 2026. The FAA registry is a snapshot, not a history — earlier owners aren't in the public record. TailWiki reconstructs ownership changes by watching daily FAA updates going forward, so this section fills in the longer TailWiki runs.

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