HIGHLEY ROBERT W JR· ICAO24 a9815c· last seen 18d ago

N711SH is a Thorp T-18, a single-engine piston aircraft operated by HIGHLEY ROBERT W JR. SkyMeter has tracked 58 flights totalling 23 hours of airtime via ADS-B. The most frequent segment is KLAL to KLAL. Service window in our records spans 390 days. Of those flights, 2 (3.4%) 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
58
all time
FLOWN HOURS
23
tracked time
📍
AIRPORTS VISITED
8
unique
📡
CALLSIGNS
1
8 routes
📅
SERVICE PERIOD
06/09/2025 → 07/05/2026
first → last
INCIDENT RATE
3.4%
2 flagged

Top routes

By flight count

7
21
2
1
1
1
F57 KLAL
1
1

Flight numbers

Most-flown by this airframe

1

Aircraft specifications

Thorp T-18

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

Recent flights

Newest 29 operations of N711SH

29
07/05/2026
9m
No alerts
07/05/2026
9m
No alerts
06/28/2026
17m
No alerts
06/28/2026
20m
No alerts
06/25/2026
37m
No alerts
06/21/2026
34m
No alerts
06/17/2026
29m
No alerts
06/05/2026
38m
No alerts
05/31/2026
21m
No alerts
05/27/2026
35m
△ Low approach-stability score
05/11/2026
21m
No alerts
05/02/2026
24m
No alerts
03/28/2026
26m
No alerts
03/23/2026
40m
No alerts
03/13/2026
22m
No alerts
02/11/2026
35m
No alerts
01/24/2026
31m
No alerts
01/17/2026
16m
No alerts
01/09/2026
32m
No alerts
01/01/2026
20m
No alerts
12/21/2025
21m
No alerts
12/12/2025
21m
No alerts
08/27/2025
18m
No alerts
08/24/2025
6m
No alerts
08/22/2025
11m
No alerts
08/10/2025
7m
No alerts
08/08/2025
10m
No alerts
06/26/2025
36m
No alerts
06/09/2025
25m
No alerts
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