· ICAO24 4b36db· last seen 18h ago

HB-UUD is a Pilatus PC-31, a single-engine turboprop. SkyMeter has tracked 536 flights totalling 277 hours of airtime via ADS-B. The most frequent segment is LSZW to LSZW. Service window in our records spans 501 days. Of those flights, 32 (6.0%) carry at least one detected incident: a go-around, unstable approach, stall warning, or runway excursion. The Pilatus PC-31 has a maximum takeoff weight of 12,125 lb, light wake category.

About the Pilatus PC-31

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 flights across airframes and operators over routes, with the largest observed operator.

✈
FLIGHTS
536
all time
⏱
FLOWN HOURS
277
tracked time
📍
AIRPORTS VISITED
30
unique
📡
CALLSIGNS
1
49 routes
📅
SERVICE PERIOD
5/29/2025 → 10/12/2026
first → last
⚠
INCIDENT RATE
6.0%
32 flagged

Top routes

By flight count

10
148
12
6
6
5
4
3
3
3
2

Flight numbers

Most-flown by this airframe

1

Aircraft specifications

Pilatus PC-31

Engines
Single Turboprop
Vref (approach)
85 kt
Vmo
280 kt
MTOW
12,125 lb
Wake category
L

Recent flights

Newest 50 operations of HB-UUD

50
10/12/2026
24m
△ Low approach-stability score
10/6/2026
58m
No alerts
9/29/2026
22m
No alerts
9/19/2026
1h 10m
No alerts
9/15/2026
35m
No alerts
9/15/2026
25m
No alerts
9/15/2026
29m
No alerts
9/13/2026
1h 3m
No alerts
9/13/2026
1h 4m
No alerts
9/12/2026
29m
No alerts
9/12/2026
32m
No alerts
9/12/2026
30m
No alerts
9/12/2026
32m
No alerts
9/12/2026
31m
No alerts
9/11/2026
20m
No alerts
9/11/2026
20m
No alerts
9/11/2026
38m
No alerts
9/11/2026
39m
No alerts
9/5/2026
24m
No alerts
9/5/2026
7m
No alerts
9/4/2026
1h 2m
No alerts
9/3/2026
15m
△ Low approach-stability score
9/3/2026
30m
No alerts
9/3/2026
1h 3m
No alerts
9/1/2026
24m
No alerts
8/30/2026
37m
No alerts
8/24/2026
22m
No alerts
8/24/2026
5m
No alerts
8/23/2026
11m
No alerts
8/23/2026
23m
No alerts
8/23/2026
49m
No alerts
8/19/2026
1h 2m
No alerts
8/15/2026
42m
No alerts
8/15/2026
51m
No alerts
8/14/2026
11m
No alerts
8/12/2026
28m
No alerts
8/12/2026
28m
No alerts
8/11/2026
13m
No alerts
8/11/2026
20m
No alerts
8/9/2026
52m
No alerts
8/8/2026
27m
No alerts
8/5/2026
1h 2m
No alerts
8/2/2026
58m
No alerts
8/2/2026
33m
No alerts
7/29/2026
17m
No alerts
7/29/2026
28m
No alerts
7/25/2026
44m
No alerts
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