PINNEY SIDNEY G· ICAO24 a175cb· last seen 7d ago

N1931 is a Boeing B-17G, a four-engine piston aircraft operated by PINNEY SIDNEY G. SkyMeter has tracked 148 flights totalling 65 hours of airtime via ADS-B across 2 callsigns. The most frequent segment is FD04 to 4FA7. Service window in our records spans 410 days. Of those flights, 10 (6.8%) carry at least one detected incident: a go-around, unstable approach, stall warning, or runway excursion. The Boeing B-17G has a maximum takeoff weight of 65,500 lb, medium wake category.

About the Boeing B-17G

The Boeing B-17 Flying Fortress is the most iconic American heavy bomber of World War II, famous for its ruggedness, defensive firepower, and ability to absorb catastrophic battle damage and still bring crews home. First flown in 1935 and entering service in 1938, the B-17 became the backbone of the U.S. Eighth Air Force's daylight strategic bombing campaign over Europe, with the G-model representing the definitive production variant featuring a chin turret and improved defensive armament totaling thirteen .50-caliber machine guns. More than 12,700 B-17s were built, with the type flying some of the war's most famous and costly missions including the raids on Schweinfurt and Regensburg.

The Flying Fortress earned its legendary status through a combination of structural strength, redundant systems, and operational ceiling that allowed formation bombing from altitudes above 25,000 feet, beyond the effective reach of most flak and fighters early in the war. Its four Wright R-1820 Cyclone radial engines, each producing 1,200 horsepower, gave it a maximum speed of 287 mph and a combat radius exceeding 1,000 miles with a typical 4,000-pound bomb load. The aircraft's ability to remain airborne on two engines and limp home with massive structural damage became the stuff of legend, with countless accounts of B-17s returning to base with engines out, tail sections nearly severed, and gaping holes in wings and fuselage.

Today, fewer than a dozen B-17s remain airworthy worldwide, maintained by warbird organizations and museums as flying memorials to the 47,000 aircrew members killed flying them in combat. These survivors are meticulously restored to G-model configuration and operate under strict FAA limitations, typically powered by original or overhauled R-1820 engines and flown at weights well below the wartime maximum of 65,500 pounds. The type's stall characteristics remain demanding (power-on stalls can break sharply, and asymmetric thrust on two engines requires immediate corrective action), making current operators among the most experienced warbird pilots in the world.

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

FLIGHTS
148
all time
FLOWN HOURS
65
tracked time
📍
AIRPORTS VISITED
15
unique
📡
CALLSIGNS
2
17 routes
📅
SERVICE PERIOD
05/27/2025 → 07/11/2026
first → last
INCIDENT RATE
6.8%
10 flagged

Top routes

By flight count

10
7
4
2
2
1
1
1
1
1
1

Flight numbers

Most-flown by this airframe

2

Aircraft specifications

Boeing B-17G

Engines
Quad Piston
Vref (approach)
90 kt
MTOW
65,500 lb
Wake category
M

Recent flights

Newest 50 operations of N1931

50
07/11/2026
10m
No alerts
07/11/2026
13m
No alerts
07/04/2026
33m
No alerts
07/03/2026
28m
No alerts
06/27/2026
15m
No alerts
06/27/2026
5m
No alerts
06/27/2026
28m
No alerts
06/20/2026
31m
No alerts
06/13/2026
47m
No alerts
06/07/2026
32m
No alerts
06/07/2026
6m
No alerts
06/07/2026
8m
No alerts
06/07/2026
7m
No alerts
05/25/2026
26m
No alerts
05/19/2026
23m
No alerts
05/19/2026
25m
No alerts
05/17/2026
20m
No alerts
05/02/2026
18m
No alerts
04/19/2026
30m
No alerts
04/18/2026
18m
No alerts
04/17/2026
38m
No alerts
04/01/2026
16m
No alerts
04/01/2026
19m
No alerts
03/21/2026
51m
No alerts
03/20/2026
38m
No alerts
03/13/2026
14m
△ Low approach-stability score
03/13/2026
18m
No alerts
03/11/2026
1h 2m
No alerts
03/10/2026
7m
No alerts
03/10/2026
1h 7m
No alerts
03/04/2026
19m
No alerts
01/30/2026
26m
No alerts
01/10/2026
17m
△ Low approach-stability score
01/03/2026
10m
△ Low approach-stability score
12/28/2025
37m
No alerts
12/27/2025
20m
No alerts
12/26/2025
6m
No alerts
12/26/2025
32m
No alerts
12/26/2025
20m
No alerts
12/26/2025
25m
No alerts
12/21/2025
50m
No alerts
12/20/2025
28m
No alerts
12/17/2025
24m
No alerts
12/17/2025
15m
No alerts
12/13/2025
25m
No alerts
12/13/2025
27m
No alerts
11/30/2025
24m
No alerts
11/22/2025
29m
No alerts
11/19/2025
42m
No alerts
11/16/2025
16m
No alerts
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