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Registered aircraft · FAA record as of September 25, 2026
N21SG

Cessna 421C

N21SG is a Cessna 421C, a fixed-wing airplane with more than one motor with a piston engine, built in 1976. It has 8 seats. It is registered to Two One Sierra Golf LLC, an LLC in Seattle, Washington. The registration is valid: it was issued on September 18, 2012 and expires on September 30, 2028. It holds a standard airworthiness certificate for normal, dated April 18, 1984.

Aircraft

Maker
Cessna
Model
421C
Serial number
421C0039
Type
Fixed-wing, multi-engine
Power
Piston (reciprocating), 2 motors · Cont Motor GTSIO-520 SER · 435 hp
Seats
8
Year built
1976
Cruising speed
90 mph
Transponder code
A1B8C0 (octal 50334300)

Registration

Status
Valid registration
Certificate issued
September 18, 2012
Expires
September 30, 2028
Last FAA action
June 10, 2023
Airworthiness
Standard · Normal · April 18, 1984
FAA region
Northwest Mountain
FAA record id
00970924

Owner as the FAA publishes it

Name
Two One Sierra Golf LLC
Type
LLC
Address
3516 SW 110Th St
Seattle, WA 98146-1760

Owners can ask the FAA to withhold their name and address from public files. When they do, those fields are blank here as well. How that works.

Documents on file 0

No bills of sale, loans or other documents are indexed against this tail number.

Source: FAA Civil Aviation Registry, Releasable Aircraft Database, September 25, 2026. See this record on the FAA site · This record as data