N4557N - 1978 Cessna 340A Aircraft Registration

C340

1978 CESSNA 340A

Aircraft Description

N4557N is a 1978 Cessna 340A, a twin-engine reciprocating (piston) aircraft registered to Westra Aviation LLC in Beaver Dam, WI. The registration certificate was issued on March 6, 2015. The registration is set to expire on March 31, 2028. Powered by a Cont Motor TSIO-520 SER engine producing 300 horsepower, N4557N is. The aircraft's Mode S transponder code is A58809 (hex), used for ADS-B identification and flight tracking. N4557N was last tracked by AviatorDB at coordinates 43.4515, -88.7035 on March 12, 2026. The FAA registry record for N4557N was last updated on April 28, 2023. AviatorDB monitors aircraft positions through ADS-B surveillance data and updates records as new position data is received.

The Cessna 340 was a pressurized twin-engine business aircraft that provided high-altitude capability at a lower cost than larger corporate twins. First delivered in 1971, it was a low-wing monoplane powered by two turbocharged Continental engines that could seat up to six occupants. With a maximum takeoff weight of 5,990 pounds in its final configuration, the aircraft offered pressurized comfort for business travel. Manufactured by Cessna Aircraft Company from 1972 to 1984, 1,287 examples were built before production ended. AviatorDB tracks 80,556 Cessna aircraft currently registered in the FAA database. The ICAO type designator for this aircraft model is C340.

AviatorDB has found no NTSB accident or incident reports involving N4557N. AviatorDB cross-references all FAA registration data with NTSB accident and incident reports, providing a comprehensive safety overview for every registered aircraft in the United States.

Model Year
1978
Manufacturer
CESSNA
Model
340A
Type Aircraft
Fixed Wing Multi Engine
ICAO Type Code
C340340
Cruise Speed
90 mph
Weight Class
Up to 12,500 lbs
Airworthiness Date
Classification
Standard Category
Type Registration
LLC
Status
Valid Registration
Cert Issue Date
March 6, 2015

Registered Owner

Name
WESTRA AVIATION LLC
Address
100 TOWER DR
City
BEAVER DAM
State / Zip Code
Wisconsin53916-9178
Country
United States

Powerplant & Avionics

Engine Type
Reciprocating
Number of Engines
2
Engine Manufacturer
CONT MOTOR
Engine Model
TSIO-520 SER
Horsepower
300 HP
Mode S Code (Oct)
51304011
Mode S Code (Hex)
A58809

Additional Details

Registration
N4557N
Serial Number
340A0547
Number of Engines
2
Number of Seats
6
Expiration Date
March 31, 2028
Last Action Date
April 28, 2023
Last Update Date
January 19, 2026
Unique ID
00372914

Last Known Position

Date
May 7, 2026 (UTC 21:00:48)
Airport
Latitude
43.420898
Longitude
-88.746664

Data Source

Data provided by the US Federal Aviation Administration. View on FAA.gov

Last updated: 2026-05-15 01:32:20 UTC