HORST SHELDON L· ICAO24 a71253· last seen Jun 2026

N555DK is a Christen Industries / Aviat Aircraft Christen Eagle II, a single-engine piston aircraft operated by HORST SHELDON L. SkyMeter has tracked 96 flights totalling 36 hours of airtime via ADS-B across 2 callsigns. The most frequent segment is KN71 to KLNS. Service window in our records spans 342 days. Of those flights, 6 (6.2%) carry at least one detected incident: a go-around, unstable approach, stall warning, or runway excursion. The Christen Industries / Aviat Aircraft Christen Eagle II has a maximum takeoff weight of 1,650 lb, light wake category.

About the Christen Industries / Aviat Aircraft Christen Eagle II

The Christen Eagle II is a high-performance aerobatic biplane that brought competition-grade aerobatics within reach of homebuilders starting in 1977. Designed by Frank Christensen as a refined evolution of the legendary Pitts Special, the Eagle II features a symmetrical airfoil, inverted fuel and oil systems, and a rugged steel-tube fuselage capable of sustaining +/- 6G loads throughout its flight envelope. Powered by a 200-horsepower Lycoming AEIO-360 engine driving a constant-speed propeller, the aircraft delivers exceptional roll rates exceeding 180 degrees per second and can execute the full catalog of Aresti aerobatic figures with precision. Its tandem seating configuration places both occupants on the aircraft's centerline for optimal visibility and control harmony during inverted flight.

Originally marketed as a kit aircraft by Christen Industries and later by Aviat Aircraft after the 1993 acquisition, the Eagle II became a dominant force in Unlimited aerobatic competition throughout the 1980s and early 1990s. The type earned numerous medals at U.S. National Aerobatic Championships and represented American pilots at multiple World Aerobatic Championships. Its docile handling characteristics and forgiving stall behavior made it popular not only among seasoned competition pilots but also among recreational aerobatic enthusiasts seeking a capable trainer for advanced maneuvers. The aircraft's relatively light wing loading of approximately 12 pounds per square foot allows sustained vertical performance while maintaining excellent energy retention through complex sequences.

Today the Eagle II remains a sought-after platform in the vintage aerobatic community, prized for its honest handling and mechanical simplicity compared to modern composite designs. Most examples fly with the 200-hp Lycoming, though some builders have experimented with higher-output engines up to 260 horsepower for enhanced vertical performance. The type's open-cockpit variant and its distinctive red-white-and-blue paint schemes make it a crowd favorite at airshows across North America. SkyMeter has tracked flights across airframes and operators, with the largest observed operator.

FLIGHTS
96
all time
FLOWN HOURS
36
tracked time
📍
AIRPORTS VISITED
13
unique
📡
CALLSIGNS
2
16 routes
📅
SERVICE PERIOD
06/28/2025 → 06/06/2026
first → last
INCIDENT RATE
6.2%
6 flagged

Top routes

By flight count

9
6
4
S37 KLNS
3
S37 KN71
3
08N K9D4
1
1
S37 K1N7
1
1

Flight numbers

Most-flown by this airframe

2

Aircraft specifications

Christen Industries / Aviat Aircraft Christen Eagle II

Engines
Single Piston
Vref (approach)
70 kt
MTOW
1,650 lb
Wake category
L

Recent flights

Newest 48 operations of N555DK

48
06/06/2026
9m
No alerts
06/06/2026
9m
No alerts
06/06/2026
39m
No alerts
06/06/2026
3m
No alerts
06/01/2026
9m
No alerts
05/31/2026
33m
No alerts
05/31/2026
40m
No alerts
05/31/2026
16m
No alerts
05/31/2026
39m
No alerts
05/29/2026
11m
No alerts
05/29/2026
32m
No alerts
05/16/2026
37m
No alerts
05/16/2026
28m
No alerts
05/02/2026
37m
△ Low approach-stability score
04/23/2026
27m
No alerts
04/17/2026
41m
No alerts
04/16/2026
9m
No alerts
04/16/2026
10m
No alerts
01/22/2026
29m
No alerts
01/13/2026
24m
△ Low approach-stability score
01/13/2026
12m
No alerts
01/08/2026
45m
No alerts
01/08/2026
10m
No alerts
12/03/2025
13m
No alerts
10/24/2025
1h 1m
No alerts
10/18/2025
11m
No alerts
10/18/2025
34m
No alerts
10/18/2025
10m
No alerts
10/17/2025
39m
No alerts
09/13/2025
10m
No alerts
09/13/2025
21m
No alerts
09/13/2025
10m
No alerts
09/06/2025
9m
No alerts
09/06/2025
12m
No alerts
09/06/2025
8m
No alerts
09/03/2025
40m
No alerts
09/03/2025
34m
No alerts
08/15/2025
18m
No alerts
08/12/2025
42m
No alerts
07/05/2025
8m
△ Low approach-stability score
07/05/2025
18m
No alerts
07/05/2025
26m
No alerts
07/05/2025
6m
No alerts
07/04/2025
5m
No alerts
07/04/2025
18m
No alerts
07/04/2025
13m
No alerts
07/04/2025
11m
No alerts
06/28/2025
30m
No alerts
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