Pilatus Pc-31 (BU31)
ICAO BU31 Light

Pilatus Pc-31

Single Turboprop

The Pilatus PC-31 Turbo Porter represents a turboprop evolution of the legendary PC-6 Porter, Switzerland's famous short takeoff and landing workhorse first introduced in the 1950s. Built by Pilatus Aircraft in Stans, the PC-31 variant features a Pratt & Whitney Canada PT6A turboprop engine delivering exceptional performance in confined mountain strips, bush operations, and utility roles where conventional aircraft cannot operate. Its unpressurized cabin accommodates up to ten passengers or equivalent cargo, and the aircraft's fixed tricycle or tailwheel landing gear can be fitted with skis, floats, or oversized tundra tires for operations in extreme environments. What distinguishes the Porter family is its extraordinary STOL capability: takeoff runs under 200 meters and landing distances even shorter make it the aircraft of choice for Alpine rescue services, parachute operations, and remote supply missions across rugged terrain. The type's high-wing configuration and rugged airframe allow operations from grass strips, glaciers, and improvised surfaces at altitudes where most single-engine aircraft struggle. Maximum operating altitude exceeds 25,000 feet, and the PC-31's slow-flight handling remains docile even in challenging mountain weather. The PC-31 designation specifically refers to turboprop-powered Porters in certain registries, though the broader PC-6 family encompasses both piston and turbine variants spanning seven decades of production. Over 600 Porters of all types have been delivered worldwide, serving operators from the Swiss Air Force to humanitarian organizations in Africa and Asia. The aircraft remains in production today, a testament to its unmatched utility in the world's most demanding operating environments. SkyMeter has tracked 36 flights across 9 airframes and 7 operators over routes, with STILLINGER DAVID C the largest observed operator.

✈
ACTIVE AIRFRAMES
9
last 7 days
🏢
OPERATORS
7
unique airlines
📊
FLIGHTS
36
tracked
⏱
AVG DURATION
45m
per flight
⚠
INCIDENT RATE
19.4%
7 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
85 kt
Vref range
—
Vmo
280 kt
Mmo
—
Vne
320 kt
Vno
250 kt
Vs0 (landing)
67 kt
Vfe
150 kt
Approach category
—

Dimensions

Airframe geometry

Wingspan
—
Length
—
Tail height
—
Wheelbase
—
Gear width
—
Wake category
L

Weight & identification

Operating limits

MTOW
12,125 lb
MALW
—
Manufacturer model
PC-31
FAA designator
—
Registered
—

Recent incidents

Flagged flights of BU31

20
10/12/2026
24m
△ Low approach-stability score
10/12/2026
3h 4m
! Stall
10/7/2026
1h 12m
! Stall
10/2/2026
22m
△ Low approach-stability score
9/30/2026
1h 31m
! Stall

Recent flights

Real flights of BU31 · airborne ≥ 20 min

30
10/12/2026
23m
No alerts
10/12/2026
1h 31m
No alerts
10/12/2026
24m
△ Low approach-stability score
10/12/2026
1h 7m
No alerts
10/12/2026
3h 4m
! Stall
10/9/2026
44m
No alerts
10/9/2026
44m
No alerts
10/9/2026
1h 4m
No alerts
10/9/2026
1h 27m
No alerts
10/8/2026
40m
No alerts
10/8/2026
51m
No alerts
10/8/2026
20m
No alerts
10/7/2026
29m
No alerts
10/7/2026
56m
No alerts
10/7/2026
53m
No alerts
10/7/2026
1h 12m
! Stall
10/7/2026
48m
No alerts
10/6/2026
25m
No alerts
10/6/2026
38m
No alerts
10/6/2026
31m
No alerts
10/6/2026
1h 13m
No alerts
10/6/2026
1h 8m
No alerts
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© SkyMeter · All flight data subject to ODbL attribution · Tracking window: 7 days (free tier)