N173SD is operated by MOUNTAIN AEROBATICS LLC between Washington Regional Airport (KMO6) and Spirit of St Louis Airport (KSUS). The flight is most often flown by a BELLANCA Bellanca 8 Scout. Typical block time is 0h 21m. SkyMeter has observed 7 legs of this flight number via ADS-B.

FLIGHTS
7
last 90 days
AVG DURATION
21m
tracked time
📅
SERVICE PERIOD
9/1/2025 → 8/29/2026
first → last seen
🗺
ROUTES / TYPES
6 / 1
city pairs · airframes
INCIDENT RATE
14.3%
1 flagged

Routes flown

By count · last 90 days

4
1
avg 9m · Washington → Spirit of St Louis
1
avg 21m · St Clair → Spirit of St Louis
1
avg 48m · Parkland Health Center Heliport → Spirit of St Louis
1
avg 14m · Spirit of St Louis → Washington

Aircraft types

Equipment used on this number

1

Safety profile

Flagged flights · last 90 days

Go-arounds
0
Unstable approach
1
Rejected TO
0
Stall warnings
0
Overspeeds
0
Runway excursion
0
Counts represent flights with at least one occurrence of each flag, not the total event count. See /incidents for individual events.

Recent flights

Newest 30 operations of N173SD

30
6/20/2026
48m
△ Low approach-stability score
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window