MROWZINSKI DONALD J· ICAO24 a11d2f· last seen 22d ago

N171D is a Defiant Aircraft Defiant, a single-engine piston aircraft operated by MROWZINSKI DONALD J. SkyMeter has tracked 56 flights totalling 42 hours of airtime via ADS-B across 2 callsigns. The most frequent segment is KTZR to KTZR. Service window in our records spans 400 days. Of those flights, 12 (21.4%) carry at least one detected incident: a go-around, unstable approach, stall warning, or runway excursion. The Defiant Aircraft Defiant has a maximum takeoff weight of 1,320 lb, light wake category.

About the Defiant Aircraft Defiant

The Defiant is an American light-sport aircraft designed and manufactured by Defiant Aircraft, a small general aviation company. Built to meet the FAA's LSA category requirements, the Defiant is restricted to a maximum takeoff weight of 1,320 pounds and features a single piston engine driving a fixed-pitch or ground-adjustable propeller. The aircraft targets the recreational flying market, offering an economical entry point for pilots seeking simple, affordable flight operations under sport pilot privileges.

Like most LSA designs, the Defiant emphasizes straightforward handling characteristics and modest performance. Its stall speeds remain well below the LSA regulatory ceiling of 45 knots calibrated airspeed in landing configuration, making it accessible to lower-time pilots. The type's never-exceed speed and structural cruising speed fall within the typical LSA envelope, balancing performance with the category's emphasis on safety and simplicity. Construction likely employs composite materials or aluminum tube-and-fabric techniques common to the LSA segment.

SkyMeter has tracked flights across airframes and operators, with the largest observed operator.

FLIGHTS
56
all time
FLOWN HOURS
42
tracked time
📍
AIRPORTS VISITED
9
unique
📡
CALLSIGNS
2
14 routes
📅
SERVICE PERIOD
6/20/2025 → 7/25/2026
first → last
INCIDENT RATE
21.4%
12 flagged

Top routes

By flight count

10
6
5
2
2
1
1
1
1
1
1

Flight numbers

Most-flown by this airframe

2

Aircraft specifications

Defiant Aircraft Defiant

Engines
Single Piston
Vref (approach)
45 kt
MTOW
1,320 lb
Wake category
L

Recent flights

Newest 28 operations of N171D

28
7/25/2026
2h 28m
⛨ TFR entry
7/12/2026
2h 32m
No alerts
7/8/2026
11m
No alerts
7/8/2026
28m
No alerts
5/9/2026
24m
No alerts
3/24/2026
39m
No alerts
3/24/2026
39m
No alerts
11/12/2025
12m
△ Low approach-stability score
11/12/2025
10m
No alerts
11/12/2025
7m
No alerts
11/12/2025
29m
No alerts
10/20/2025
39m
No alerts
9/28/2025
12m
△ Low approach-stability score
9/28/2025
1h 22m
No alerts
9/26/2025
1h 31m
No alerts
9/19/2025
11m
No alerts
9/19/2025
11m
No alerts
9/19/2025
17m
No alerts
9/17/2025
13m
△ Low approach-stability score
9/17/2025
43m
No alerts
8/11/2025
13m
△ Low approach-stability score
8/11/2025
14m
No alerts
7/25/2025
18m
△ Low approach-stability score
7/25/2025
2h 5m
No alerts
7/15/2025
2h 26m
No alerts
7/5/2025
42m
No alerts
6/21/2025
52m
△ Low approach-stability score
6/20/2025
24m
No alerts
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