Single-engine piston

N4644Y

1971 Piper Super Cub

Registered 1 NTSB/FAA record
Built
1971
Serial
18-8945
Class
Single-engine piston
Engines
Lycoming O-320 series
Status
Current as of October 2026
Registered owner
State of Montana + 1 co-owner (Government)
Based
Helena, MT
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Registration record

N4644Y on the FAA register

Type
1971 Piper Super Cub (FAA: Piper PA-18-150)
Serial
18-8945
Engines
Lycoming O-320 series
Registered owner
State of Montana + 1 co-owner
Helena, MT
Certificate issued
2006-01-20
Airworthiness date
1971-06-14
Registration expires
2029-10-31
Airworthiness class
Standard · normal
Mode S (hex)
A5AB72
Mode S (octal)
51325562
Seats (type)
2
Weight class
up to 12,499 lb
Range (type)
450 nm
Cruise (type)
97 kt
Status
Current as of October 2026
Registry history

Timeline

  • 2029-10-31
    Registration expires (renewal due).
  • 2025-01-06
    Accident at Red Rock, MT; damage: substantial.
  • 2006-01-20
    Certificate of registration issued as N4644Y.
  • 1971-06-14
    Airworthiness date on the current FAA record (standard category (normal)).
Overview

About N4644Y

N4644Y is a 1971 Piper Super Cub (FAA model PA-18-150), serial number 18-8945. The FAA register lists State of Montana + 1 co-owner as the registrant in Helena, Montana. The current certificate of registration was issued on January 20, 2006 and expires on October 31, 2029.

The FAA aircraft reference file describes the type as a single-engine piston, one Lycoming O-320 series engine and 2 seats. Published figures for the type give a cruise speed of about 97 knots and a range of about 450 nm; actual performance depends on configuration, load and conditions. Its airworthiness certificate is standard category (normal), dated June 14, 1971.

N4644Y has 1 accident/incident record on file (most serious damage: substantial); details are below.

Cruise
97 kt
Range
450 nm
Power / thrust (each)
125
Takeoff over 50 ft
650 ft
Landing over 50 ft
725 ft
Fuel burn
8 gph

Published figures for the Piper Super Cub type. They describe the model, not this airframe's equipment or condition. Piper Super Cub specs, prices and for-sale inventory →

Safety record

Accident & incident history

2025-01-06 Accident · Red Rock, MT Damage: Substantial NTSB · WPR25LA074
Reported aircraft: Piper PA-18-150
Probable cause: The pilot's failure to maintain directional control during takeoff, which resulted in an impact with deep snow and vegetation.
NTSB report ↗

Sources: NTSB aviation accident database and CAROL case system, FAA preliminary accident & incident notices. Search accident records

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Browse: Piper aircraft for sale· Piper Super Cub overview· Aircraft registered in Montana· Registry by state· FAA registry stats

Data: FAA Aircraft Registry (October 2026), including deregistered aircraft; NTSB and FAA accident data; fyiAero listing history. Individual owners' names are shown to signed-in users and street addresses are never shown. Type figures are published specifications, not this aircraft's.