· ICAO24 4400ad· last seen Jul 2026

OE-9528 is a Schempp-Hirth Arcus, a single-engine piston aircraft, likely a private operator. SkyMeter has tracked 42 flights totalling 51 hours of airtime via ADS-B. The most frequent segment is LOIK to LOLH. Service window in our records spans 336 days. Of those flights, 2 (4.8%) carry at least one detected incident: a go-around, unstable approach, stall warning, or runway excursion. The Schempp-Hirth Arcus has a maximum takeoff weight of 1,543 lb, light wake category.

About the Schempp-Hirth Arcus

The Schempp-Hirth Arcus is a high-performance side-by-side two-seat self-launching sailplane built by the famous German glider manufacturer since 2006. Unlike traditional sailplanes that require a tow aircraft or winch launch, the Arcus features a retractable Rotax 505 two-stroke engine that allows pilots to take off independently and climb to soaring altitude before shutting down and retracting the powerplant for pure gliding flight. This self-launch capability makes it exceptionally versatile for cross-country soaring and training operations where tow infrastructure is limited.

With a 20-meter wingspan and advanced laminar-flow airfoil design, the Arcus achieves a glide ratio exceeding 40:1 in pure sailplane mode, placing it among the elite of modern two-seat gliders. The side-by-side seating configuration is unusual in the sailplane world (most two-seaters use tandem seating) but offers superior communication between instructor and student or between cross-country soaring partners. The type has found favor with soaring clubs and private owners seeking the freedom of self-launch combined with world-class gliding performance.

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

FLIGHTS
42
all time
FLOWN HOURS
51
tracked time
📍
AIRPORTS VISITED
12
unique
📡
CALLSIGNS
1
14 routes
📅
SERVICE PERIOD
8/13/2025 → 7/15/2026
first → last
INCIDENT RATE
4.8%
2 flagged

Top routes

By flight count

4
1
1
1
1

Flight numbers

Most-flown by this airframe

1

Aircraft specifications

Schempp-Hirth Arcus

Engines
Single Piston
Vref (approach)
55 kt
MTOW
1,543 lb
Wake category
L

Recent flights

Newest 21 operations of OE-9528

21
7/15/2026
47m
No alerts
7/14/2026
9m
No alerts
7/8/2026
7m
No alerts
7/8/2026
59m
No alerts
5/29/2026
14m
No alerts
5/28/2026
5m
No alerts
5/4/2026
2h 12m
No alerts
5/4/2026
43m
No alerts
4/26/2026
39m
No alerts
4/20/2026
31m
△ Low approach-stability score
3/22/2026
5h 0m
No alerts
3/20/2026
5h 52m
No alerts
3/4/2026
1h 8m
No alerts
1/27/2026
50m
No alerts
10/15/2025
31m
No alerts
10/13/2025
1h 18m
No alerts
10/13/2025
21m
No alerts
10/8/2025
16m
No alerts
9/8/2025
14m
No alerts
8/13/2025
2h 40m
No alerts
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