Schempp-Hirth Arcus (S12S)
ICAO S12S Light Piston

Schempp-Hirth Arcus

Single Piston

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 1 flights across 1 airframes and 1 operators, with BRADBURN JAMES I TRUSTEE, BRADBURN A LEIGH CARNES TRUSTEE the largest observed operator.

✈
ACTIVE AIRFRAMES
1
last 7 days
🏢
OPERATORS
1
unique airlines
📊
FLIGHTS
1
tracked
⏱
AVG DURATION
55m
per flight
⚠
INCIDENT RATE
0.0%
0 flagged
ⓘ

Safety in context

The incident rate counts flights with ANY safety event detected by SkyMeter: go-arounds (a routine response, not a failure), unstable-approach gate flags (advisory thresholds), rejected takeoffs (the system working as designed), and runway events. It is NOT an accident rate or fatality rate. For accident statistics, refer to the NTSB Aviation Accident Database (USA) or the Aviation Safety Network. See methodology for what each event type measures.

Performance

Speed envelope & approach

Vref
55 kt
Vref range
—
Vmo
—
Mmo
—
Vne
168 kt
Vno
135 kt
Vs0 (landing)
43 kt
Vfe
81 kt
Approach category
—

Dimensions

Airframe geometry

Wingspan
—
Length
—
Tail height
—
Wheelbase
—
Gear width
—
Wake category
L

Weight & identification

Operating limits

MTOW
1,543 lb
MALW
—
Manufacturer model
Arcus
FAA designator
—
Registered
—

Safety profile

Flagged flights · last 7 days

Family

Related variants

1

Recent incidents

Flagged flights of S12S

8
9/29/2026
5h 33m
△ Low approach-stability score
8/7/2026
1h 8m
△ Low approach-stability score
5/30/2026
5h 14m
△ Low approach-stability score
4/20/2026
31m
△ Low approach-stability score
3/20/2026
47m
△ Low approach-stability score
2/9/2026
59m
△ Low approach-stability score
7/18/2025
50m
△ Low approach-stability score
6/16/2025
4h 1m
△ Low approach-stability score

Recent flights

Real flights of S12S · airborne ≥ 20 min

30
10/8/2026
54m
No alerts
10/3/2026
2h 5m
No alerts
10/1/2026
5h 20m
No alerts
9/30/2026
1h 40m
No alerts
9/30/2026
43m
No alerts
9/29/2026
5h 33m
△ Low approach-stability score
9/28/2026
4h 51m
No alerts
9/24/2026
52m
No alerts
9/23/2026
1h 4m
No alerts
9/23/2026
22m
No alerts
9/22/2026
29m
No alerts
9/20/2026
2h 16m
No alerts
9/20/2026
52m
No alerts
9/16/2026
37m
No alerts
9/14/2026
1h 40m
No alerts
9/13/2026
2h 10m
No alerts
9/8/2026
1h 48m
No alerts
9/1/2026
1h 3m
No alerts
9/1/2026
4h 16m
No alerts
8/30/2026
5h 19m
No alerts
8/29/2026
3h 22m
No alerts
8/27/2026
51m
No alerts
8/23/2026
5h 12m
No alerts
8/22/2026
5h 55m
No alerts
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© SkyMeter · All flight data subject to ODbL attribution · Tracking window: 7 days (free tier)