NILSEN CHRISTOPHER· ICAO24 a34f44· last seen 1d ago

N312LL is a Thorp T-18, a single-engine piston aircraft operated by NILSEN CHRISTOPHER. SkyMeter has tracked 144 flights totalling 110 hours of airtime via ADS-B. The most frequent segment is KOAK to KLVK. Service window in our records spans 391 days. Of those flights, 26 (18.1%) carry at least one detected incident — 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
144
all time
FLOWN HOURS
110
tracked time
📍
AIRPORTS VISITED
19
unique
📡
CALLSIGNS
1
30 routes
📅
SERVICE PERIOD
06/08/2025 → 07/05/2026
first → last
INCIDENT RATE
18.1%
26 flagged

Top routes

By flight count

10
14
13
6
5
4
2
2
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 50 operations of N312LL

50
07/05/2026
2h 2m
No alerts
07/03/2026
1h 58m
△ Unstable approach
07/03/2026
27m
No alerts
06/20/2026
2h 2m
No alerts
06/17/2026
2h 12m
No alerts
06/14/2026
9m
△ Unstable approach
06/14/2026
1h 59m
No alerts
06/13/2026
2h 8m
△ Unstable approach
06/07/2026
8m
No alerts
06/07/2026
9m
No alerts
05/25/2026
12m
No alerts
05/25/2026
37m
No alerts
05/25/2026
36m
No alerts
05/25/2026
15m
No alerts
05/09/2026
2h 40m
No alerts
05/09/2026
2h 42m
No alerts
05/03/2026
1h 56m
No alerts
05/01/2026
2h 8m
No alerts
04/18/2026
9m
△ Unstable approach
04/18/2026
9m
△ Unstable approach
04/17/2026
7m
No alerts
04/03/2026
18m
△ Unstable approach
04/03/2026
23m
No alerts
03/29/2026
2h 13m
No alerts
03/28/2026
2h 13m
No alerts
03/22/2026
2h 4m
No alerts
03/21/2026
1h 10m
No alerts
03/14/2026
8m
△ Unstable approach
03/14/2026
46m
No alerts
03/14/2026
19m
No alerts
03/08/2026
10m
△ Unstable approach
03/07/2026
9m
No alerts
02/26/2026
16m
No alerts
01/26/2026
8m
△ Unstable approach
01/25/2026
30m
No alerts
01/25/2026
21m
No alerts
01/25/2026
8m
No alerts
01/11/2026
10m
△ Unstable approach
01/10/2026
41m
No alerts
01/10/2026
17m
No alerts
01/10/2026
9m
No alerts
12/29/2025
9m
△ Unstable approach
12/28/2025
9m
No alerts
12/07/2025
2h 15m
No alerts
12/06/2025
1h 52m
No alerts
12/01/2025
12m
No alerts
12/01/2025
15m
No alerts
11/27/2025
18m
No alerts
11/15/2025
26m
No alerts
11/04/2025
19m
No alerts
© SkyMeter · All flight data subject to ODbL attribution