Nanchang Cj-6a (YK18)
ICAO YK18 Light Piston

Nanchang Cj-6a

Single Piston

The Nanchang CJ-6A is a Chinese-built tandem-seat military trainer that became one of the most widely produced aircraft in aviation history, with over 2,000 examples manufactured between 1958 and the 1980s. Developed by the state-owned Nanchang Aircraft Manufacturing Company as a successor to the Soviet Yak-18, the CJ-6 served as the primary basic trainer for the People's Liberation Army Air Force and was exported to numerous countries including Albania, Bangladesh, and North Korea. Its robust all-metal construction, conventional tailwheel configuration, and forgiving flight characteristics made it ideal for ab-initio military pilot training during the Cold War era. Powered by a single Housai HS-6A nine-cylinder radial engine producing 285 horsepower, the CJ-6A delivers spirited aerobatic performance with a roll rate exceeding 120 degrees per second and the ability to sustain positive and negative G loads up to +7/-5. Following the end of the Cold War, surplus CJ-6As entered the civilian warbird market in significant numbers, particularly in the United States where they were certificated under FAA Type Certificate A00012EN. American owners prize the type for its low operating costs, authentic military trainer pedigree, and fully aerobatic capability at a fraction of the price of comparable Western trainers like the T-6 Texan. The aircraft's distinctive appearance—featuring a bubble canopy, spatted landing gear, and bright training colors—makes it a popular attraction at airshows and formation flying events. SkyMeter has tracked 3 flights across 2 airframes and 2 operators, with RING NIEL W among the observed operators.

ACTIVE AIRFRAMES
2
last 7 days
🏢
OPERATORS
2
unique airlines
📊
FLIGHTS
3
tracked
AVG DURATION
18m
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
75 kt
Vref range
Vmo
Mmo
Vne
267 kt
Vno
205 kt
Vs1 (clean)
62 kt
Vs0 (landing)
56 kt
Vfe
112 kt
Approach category

Dimensions

Airframe geometry

Wingspan
Length
Tail height
Wheelbase
Gear width
Wake category
L

Weight & identification

Operating limits

MTOW
2,910 lb
MALW
Manufacturer model
CJ-6A
FAA designator
Registered

Safety profile

Flagged flights · last 7 days

Family

Related variants

2

Recent incidents

Flagged flights of YK18

6
06/23/2026
53m
△ Unstable approach
10/21/2025
25m
△ Unstable approach
09/21/2025
39m
△ Unstable approach
07/19/2025
25m
△ Unstable approach
07/04/2025
21m
△ Unstable approach
06/05/2025
33m
△ Unstable approach

Recent flights

Real flights of YK18 · airborne ≥ 20 min

30
07/04/2026
20m
No alerts
06/23/2026
1h 13m
No alerts
06/23/2026
40m
No alerts
06/23/2026
53m
△ Unstable approach
06/19/2026
22m
No alerts
06/18/2026
29m
No alerts
06/18/2026
31m
No alerts
06/01/2026
21m
No alerts
05/15/2026
20m
No alerts
05/15/2026
23m
No alerts
05/14/2026
33m
No alerts
05/14/2026
31m
No alerts
05/11/2026
1h 2m
No alerts
05/11/2026
1h 2m
No alerts
04/26/2026
22m
No alerts
04/26/2026
1h 26m
No alerts
04/26/2026
19m
No alerts
04/25/2026
37m
No alerts
04/25/2026
2h 23m
No alerts
04/24/2026
23m
No alerts
04/24/2026
21m
No alerts
03/21/2026
32m
No alerts
03/19/2026
29m
No alerts
03/14/2026
29m
No alerts
02/09/2026
26m
No alerts
01/10/2026
33m
No alerts
12/13/2025
28m
No alerts
12/12/2025
35m
No alerts
12/02/2025
25m
No alerts
11/11/2025
22m
No alerts
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© SkyMeter · All flight data subject to ODbL attribution · Tracking window: 7 days (free tier)