Flight Tracker
N21591
2004 CESSNA 172S
Fixed wing single engine · Reciprocating · Standard
1 NTSB record for this tail number, including substantial damage. See the full record below.

Registration

Registered Owner
KOHN AVIATION LLC
Registrant Type
LLC
Location
SAN CARLOS, CA
Status
Valid
Certificate Issued
Aug 24, 2018
Airworthiness Date
Jun 29, 2004
Expires
Aug 31, 2028
Approved Operations
Normal, Utility

Airframe

Manufacturer
CESSNA
Model
172S
Year
2004
Serial Number
172S9658
Seats
4
Engines
1
Max Weight
Up to 12,499 lb
Cruise Speed
-
Type Certificate
-

Powerplant

Engine Manufacturer
LYCOMING
Engine Model
IO-360-L2A
Type
Reciprocating
Power
180 hp

Live Flight Status

Checking live traffic…

Coverage depends on ground receiver reception and is not a complete picture of traffic.

Transponder & Tracking

Mode S Code (Hex)
A1CFC2
Mode S Code (Octal)
50347702

The hex code is the aircraft's ICAO 24-bit address, broadcast by its ADS-B transponder. It is the key used to match live position reports to this registration.

Ownership History: 1 prior registration

RegistrantLocationCancelled
STANLEYS TRUCK & AUTO REPAIRS INC MIAMI, FL Sep 11, 1980

Observed Flights

DateFromToDurationMax Alt
Sep 11, 2026 20:02Z SQL 17CL 7 min 3,775 ft

Flights are inferred from sampled ADS-B positions, not from filed flight plans. Airports shown are the nearest field to where the aircraft was first and last seen at low altitude; endpoints outside receiver coverage are marked “not observed”. Durations are time observed, not block time.

NTSB Accident & Incident Record

Sep 21, 2009 Accident Substantial San Carlos, CA
InjuriesNone
Phase of Flight-
ConditionsVMC
OperationFAR 091
Probable Cause

The student pilot's failure to maintain clearance with a fence post during taxi.

NTSB WPR09CA461