Funk Aircraft Company B-85c (FNKB)
ICAO FNKB Light Piston

Funk Aircraft Company B-85c

Single Piston

The Funk B-85C is a charming relic of American general aviation's formative years, designed by brothers Joe and Howard Funk in the late 1930s and produced through the 1940s in Coffeyville, Kansas. Built as an affordable two-seat side-by-side trainer and personal aircraft, the Funk featured fabric-covered steel tube construction and a distinctive high-wing configuration that made it popular with flight schools and private owners during and immediately after World War II. Powered by variants of the Continental or Lycoming flat-four engine producing 65 to 85 horsepower, the B-85C was known for its docile handling, rugged construction, and forgiving flight characteristics—qualities that endeared it to student pilots and weekend flyers alike. Though production ceased in the early 1950s and only a few hundred were built across all variants, the Funk remains a beloved type among vintage aircraft enthusiasts, with a small but dedicated community keeping survivors airworthy. Its gentle stall speed of 38 knots and never-exceed speed of 140 knots reflect the leisurely pace of pre-war light aviation, when cross-country flights were measured in hours rather than minutes and the journey mattered as much as the destination. SkyMeter has tracked 2 flights across 1 airframes and 1 operators, with HERITAGE FLYING CLUB LLC the largest observed operator.

ACTIVE AIRFRAMES
1
last 7 days
🏢
OPERATORS
1
unique airlines
📊
FLIGHTS
2
tracked
AVG DURATION
11m
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
140 kt
Vno
120 kt
Vs1 (clean)
42 kt
Vs0 (landing)
38 kt
Vfe
87 kt
Approach category

Dimensions

Airframe geometry

Wingspan
Length
Tail height
Wheelbase
Gear width
Wake category
L

Weight & identification

Operating limits

MTOW
1,750 lb
MALW
Manufacturer model
B-85C
FAA designator
Registered

Top operators

By fleet size · last 7 days

1

Safety profile

Flagged flights · last 7 days

Family

Related variants

0

No related variants.

Recent incidents

Flagged flights of FNKB

9
02/13/2026
37m
△ Unstable approach
12/27/2025
52m
△ Unstable approach
11/27/2025
56m
△ Unstable approach
11/07/2025
36m
△ Unstable approach
11/07/2025
22m
△ Unstable approach
09/11/2025
21m
△ Unstable approach
08/12/2025
30m
△ Unstable approach
08/06/2025
38m
△ Unstable approach
07/17/2025
45m
△ Unstable approach

Recent flights

Real flights of FNKB · airborne ≥ 20 min

30
05/12/2026
29m
No alerts
04/30/2026
42m
No alerts
04/30/2026
34m
No alerts
04/14/2026
49m
No alerts
04/08/2026
1h 13m
No alerts
04/01/2026
45m
No alerts
03/26/2026
58m
No alerts
02/13/2026
37m
△ Unstable approach
02/11/2026
29m
No alerts
02/09/2026
38m
No alerts
02/06/2026
26m
No alerts
02/06/2026
36m
No alerts
02/05/2026
52m
No alerts
01/29/2026
46m
No alerts
01/28/2026
20m
No alerts
01/25/2026
33m
No alerts
01/24/2026
21m
No alerts
01/22/2026
1h 2m
No alerts
01/06/2026
37m
No alerts
01/06/2026
31m
No alerts
01/05/2026
39m
No alerts
01/02/2026
21m
No alerts
01/02/2026
19m
No alerts
12/30/2025
47m
No alerts
12/27/2025
52m
△ Unstable approach
12/27/2025
39m
No alerts
12/23/2025
32m
No alerts
12/12/2025
44m
No alerts
11/27/2025
56m
△ Unstable approach
11/25/2025
53m
No alerts
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© SkyMeter · All flight data subject to ODbL attribution · Tracking window: 7 days (free tier)