Stearman Aircraft Pt-17 Kaydet (ST30)
ICAO ST30 Light Piston

Stearman Aircraft Pt-17 Kaydet

Single Piston

The Boeing-Stearman Model 75, known to the U.S. military as the PT-17 Kaydet, is the iconic yellow biplane that trained tens of thousands of Allied pilots during World War II. Built by Stearman Aircraft (a Boeing subsidiary) from 1934 through 1945, more than 10,000 were produced, making it the most widely used primary trainer of the war. Its rugged steel-tube fuselage, fabric-covered wings, and forgiving flight characteristics made it ideal for teaching basic aerobatics and carrier landings—many Navy pilots soloed in Stearmans before moving on to fighters and dive bombers. The open-cockpit design and radial engine gave student pilots an authentic stick-and-rudder education in an era before tricycle gear and glass panels. After the war, thousands of surplus Kaydets flooded the civilian market, where they found new life as crop dusters, airshow performers, and recreational warbirds. Today the Stearman is a fixture at fly-ins and aerobatic displays, prized for its classic lines, honest handling, and the unmistakable sound of a radial engine at full throttle. The type remains one of the most accessible vintage military aircraft for private owners, with an active community maintaining these 80-year-old trainers in flying condition. SkyMeter has tracked 18 flights across 4 airframes and 4 operators, with ADVANCED AEROBATICS LLC the largest observed operator.

ACTIVE AIRFRAMES
4
last 7 days
🏢
OPERATORS
4
unique airlines
📊
FLIGHTS
18
tracked
AVG DURATION
13m
per flight
INCIDENT RATE
5.6%
1 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
135 kt
Vno
104 kt
Vs0 (landing)
46 kt
Vfe
85 kt
Approach category

Dimensions

Airframe geometry

Wingspan
Length
Tail height
Wheelbase
Gear width
Wake category
L

Weight & identification

Operating limits

MTOW
2,950 lb
MALW
Manufacturer model
PT-17 Kaydet
FAA designator
Registered

Recent incidents

Flagged flights of ST30

20
06/23/2026
30m
△ Unstable approach
06/15/2026
45m
△ Unstable approach
05/14/2026
21m
△ Unstable approach
05/14/2026
24m
△ Unstable approach
04/27/2026
42m
△ Unstable approach
04/05/2026
21m
△ Unstable approach
03/28/2026
20m
⭍ Upset
03/28/2026
29m
△ Unstable approach
03/27/2026
27m
△ Unstable approach
03/27/2026
21m
△ Unstable approach

Recent flights

Real flights of ST30 · airborne ≥ 20 min

30
07/05/2026
22m
No alerts
07/03/2026
29m
No alerts
07/03/2026
36m
No alerts
07/01/2026
20m
No alerts
07/01/2026
20m
No alerts
06/29/2026
35m
No alerts
06/29/2026
37m
No alerts
06/29/2026
33m
No alerts
06/28/2026
38m
No alerts
06/24/2026
39m
No alerts
06/24/2026
41m
No alerts
06/24/2026
3h 17m
No alerts
06/23/2026
44m
No alerts
06/23/2026
30m
△ Unstable approach
06/23/2026
27m
No alerts
06/22/2026
20m
No alerts
06/21/2026
38m
No alerts
06/20/2026
32m
No alerts
06/19/2026
26m
No alerts
06/16/2026
45m
No alerts
06/16/2026
37m
No alerts
06/16/2026
20m
No alerts
06/16/2026
30m
No alerts
06/15/2026
28m
No alerts
06/15/2026
6h 15m
No alerts
06/15/2026
41m
No alerts
06/15/2026
45m
△ Unstable approach
06/15/2026
24m
No alerts
06/13/2026
45m
No alerts
06/13/2026
27m
No alerts
PRO
You're seeing the last 7 days
Pro unlocks the full 90-day window for stats, operators, recent flights & incidents.
Upgrade to Pro
© SkyMeter · All flight data subject to ODbL attribution · Tracking window: 7 days (free tier)