N1681D V

This aircraft — FAA registration facts

N1681D is a 1952 Cessna 170B (serial 20323), registered to Kaiserauer Brian (co-owner) in Longmont, CO. Its FAA registration is recorded as v and expires February 2033; the airworthiness certificate dates from February 1956 (70 years ago). It carries a Cont Motor C145 SERIES engine rated at 145 hp, the engine on 68% of registered Cessna 170Bs. Its Mode-S transponder broadcasts the ICAO 24-bit address A111E5. It is one of 1,301 Cessna 170B aircraft on the FAA registry.

Registered owner

Kaiserauer Brian

Owner type

Co-Owner

Based in

Longmont, CO

Serial number

20323

Year built

1952 · 74 yrs old

Airworthiness class

1

FAA status

V

Mode-S / ICAO24

A111E5 · 50210745 octal

Certificate issued

Feb 4, 2026

Airworthiness date

Feb 4, 1956

Last FAA activity

Feb 4, 2026

Registration expires

Feb 28, 2033

FAA region

S

Source: FAA aircraft registry (public record). Community reviews and photos below.

Engine on this aircraft

Engine

Cont Motor C145 SERIES

Engine type

Reciprocating (Piston)

Rated power

145 hp

Power per seat

36 hp

FAA engine code

17012

864 of the 1,275 registered Cessna 170B carry this engine (68%), across 32 engine variants on the type.

Source: FAA engine reference (ENGINE.txt), matched on this registration's engine code.

Runway requirement (estimate)

A Cessna 170B needs roughly 1,050 ft of runway for takeoff at sea level (takeoff distance ~892 ft plus a 15% safety margin). Check it against a destination airport →

Planning estimate for takeoff only — excludes landing distance, wind, density altitude, and contamination. Verify against the aircraft's POH/AFM.

Community facts about N1681D

Reported by pilots, owners and enthusiasts — community-reported and admin-checked before they publish. Always verify anything important against the aircraft's records.