BITTNER ROBERT A· ICAO24 ac21a7· last seen 2d ago

N881BB is a Cozy Aircraft COZY IV, a single-engine piston aircraft operated by BITTNER ROBERT A. SkyMeter has tracked 304 flights totalling 316 hours of airtime via ADS-B. The most frequent segment is KUES to KUES. Service window in our records spans 443 days. Of those flights, 38 (12.5%) carry at least one detected incident: a go-around, unstable approach, stall warning, or runway excursion. The Cozy Aircraft COZY IV has a maximum takeoff weight of 1,450 lb, light wake category.

About the Cozy Aircraft COZY IV

The Cozy is a four-seat homebuilt aircraft that emerged in the 1980s as Nat Puffer's answer to Burt Rutan's two-seat Long-EZ. Retaining the distinctive canard configuration and composite construction of its predecessor, the Cozy stretched the fuselage to accommodate a second row of seats while preserving the efficient aerodynamics and cross-country capability that made Rutan's designs legendary among experimental builders. The aircraft is sold as plans and requires builders to fabricate components from fiberglass, foam, and epoxy, a process that typically takes several thousand hours but results in an airplane with remarkable fuel efficiency and cruise speeds around 180 knots on a modest 180-horsepower Lycoming engine.

What sets the Cozy apart in the homebuilt world is its combination of true four-seat capacity with Long-EZ performance, a rare achievement in the experimental category where most fast aircraft sacrifice useful load for speed. The canard foreplane provides natural stall resistance (the forward wing stalls before the main wing, automatically pitching the nose down for recovery), making the design famously docile despite its unconventional appearance. The pusher propeller configuration keeps the engine noise behind the cabin and eliminates the need for a complex retractable gear, contributing to the type's reputation for low maintenance and high dispatch reliability among owner-builders.

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

FLIGHTS
304
all time
FLOWN HOURS
316
tracked time
📍
AIRPORTS VISITED
77
unique
📡
CALLSIGNS
1
97 routes
📅
SERVICE PERIOD
5/28/2025 → 8/15/2026
first → last
INCIDENT RATE
12.5%
38 flagged

Top routes

By flight count

10
17
5
4
4
3
2
2
2
2
1

Flight numbers

Most-flown by this airframe

1

Aircraft specifications

Cozy Aircraft COZY IV

Engines
Single Piston
Vref (approach)
70 kt
MTOW
1,450 lb
Wake category
L

Recent flights

Newest 50 operations of N881BB

50
8/15/2026
15m
No alerts
8/14/2026
9m
△ Low approach-stability score
8/7/2026
13m
No alerts
7/29/2026
28m
No alerts
7/29/2026
24m
△ Low approach-stability score
7/20/2026
45m
No alerts
7/20/2026
11m
No alerts
7/20/2026
25m
No alerts
7/18/2026
51m
No alerts
7/17/2026
5m
No alerts
7/6/2026
39m
No alerts
7/6/2026
11m
△ Low approach-stability score
6/27/2026
8m
No alerts
6/27/2026
23m
No alerts
6/22/2026
30m
No alerts
6/21/2026
22m
No alerts
6/21/2026
18m
No alerts
6/15/2026
2h 43m
No alerts
6/14/2026
36m
No alerts
6/14/2026
49m
No alerts
6/13/2026
42m
No alerts
6/13/2026
30m
No alerts
6/12/2026
2h 33m
No alerts
6/12/2026
46m
No alerts
5/31/2026
23m
No alerts
5/31/2026
49m
No alerts
5/31/2026
17m
No alerts
5/25/2026
33m
No alerts
5/21/2026
26m
No alerts
5/21/2026
26m
No alerts
5/17/2026
27m
△ Low approach-stability score
5/17/2026
34m
No alerts
5/16/2026
48m
No alerts
5/15/2026
1h 24m
No alerts
5/3/2026
1h 6m
△ Low approach-stability score
5/3/2026
1h 6m
△ Low approach-stability score
5/1/2026
54m
No alerts
5/1/2026
54m
No alerts
4/27/2026
45m
No alerts
4/26/2026
43m
No alerts
4/25/2026
1h 25m
No alerts
4/24/2026
22m
No alerts
4/20/2026
3h 7m
No alerts
4/20/2026
1h 59m
No alerts
4/19/2026
1h 1m
No alerts
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