WHIDDON MARK H· ICAO24 a04a48· last seen May 2026

N118DT is a Thorp T-18, a single-engine piston aircraft operated by WHIDDON MARK H. SkyMeter has tracked 158 flights totalling 52 hours of airtime via ADS-B across 2 callsigns. The most frequent segment is US-0602 to XS91. Service window in our records spans 353 days. Of those flights, 4 (2.5%) carry at least one detected incident: a go-around, unstable approach, stall warning, or runway excursion. The Thorp T-18 has a maximum takeoff weight of 1,500 lb, light wake category.

About the Thorp T-18

The Thorp T-18 is a two-seat, all-metal homebuilt aircraft designed by John Thorp in the 1960s and remains one of the most successful amateur-built designs in aviation history. Thorp, a Lockheed engineer who worked on the P-38 Lightning and Constellation, applied professional aerodynamic principles to create a compact, high-performance sport plane that could be built in a home workshop. The T-18's clean lines and efficient wing deliver cruise speeds around 150-180 knots on modest 150-180 horsepower engines, performance rivaling factory-built aircraft costing far more.

The design's hallmark is its all-metal construction using simple hand tools and techniques accessible to first-time builders, with plans still available today through the Thorp Aircraft company. Over a thousand T-18s have been completed since the 1960s, with the type earning a reputation for honest handling, aerobatic capability, and exceptional fuel efficiency. The aircraft's low wing and tandem seating give it a fighter-like appearance, and many builders customize their T-18s with different engines, avionics, and paint schemes.

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

FLIGHTS
158
all time
FLOWN HOURS
52
tracked time
📍
AIRPORTS VISITED
23
unique
📡
CALLSIGNS
2
27 routes
📅
SERVICE PERIOD
06/03/2025 → 05/23/2026
first → last
INCIDENT RATE
2.5%
4 flagged

Top routes

By flight count

10
1
T25 KJSO
1
1
1
T25 KPSN
1
1
1
T25 XS91
1

Flight numbers

Most-flown by this airframe

2

Aircraft specifications

Thorp T-18

Engines
Single Piston
Vref (approach)
70 kt
MTOW
1,500 lb
Wake category
L

Recent flights

Newest 50 operations of N118DT

50
05/23/2026
13m
No alerts
05/23/2026
4m
No alerts
05/23/2026
5m
No alerts
05/02/2026
10m
No alerts
05/02/2026
8m
No alerts
05/02/2026
6m
No alerts
03/29/2026
3h 35m
No alerts
03/13/2026
48m
No alerts
03/13/2026
2m
No alerts
03/13/2026
11m
No alerts
03/01/2026
4m
No alerts
03/01/2026
3m
No alerts
11/16/2025
15m
No alerts
11/12/2025
14m
No alerts
11/12/2025
9m
No alerts
11/06/2025
13m
No alerts
11/06/2025
9m
No alerts
10/30/2025
5m
No alerts
10/30/2025
8m
No alerts
10/23/2025
4m
No alerts
10/23/2025
34m
No alerts
10/23/2025
34m
No alerts
10/23/2025
6m
No alerts
10/15/2025
1h 4m
No alerts
10/15/2025
33m
No alerts
10/15/2025
8m
No alerts
10/11/2025
3m
No alerts
10/11/2025
5m
No alerts
09/20/2025
1h 1m
No alerts
09/20/2025
36m
No alerts
09/20/2025
6m
No alerts
09/17/2025
3m
No alerts
09/17/2025
6m
No alerts
09/13/2025
1h 4m
No alerts
09/13/2025
43m
No alerts
09/13/2025
4m
No alerts
09/12/2025
6m
No alerts
09/12/2025
7m
No alerts
09/11/2025
8m
No alerts
09/10/2025
1h 0m
No alerts
09/10/2025
44m
No alerts
09/10/2025
13m
No alerts
09/03/2025
4m
△ Low approach-stability score
09/03/2025
11m
No alerts
09/01/2025
27m
No alerts
08/28/2025
13m
No alerts
08/28/2025
7m
No alerts
08/26/2025
20m
No alerts
08/26/2025
19m
No alerts
08/26/2025
5m
No alerts
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