N4644Y is a 1971 Piper PA-18-150 (fixed wing single engine) with serial number 18-8945, registered in Helena, MT. Its FAA registration is valid and runs until Oct 31, 2029; the renewal window opens on Apr 30, 2029. It is powered by a Lycoming 0-320 SERIES rated at 180 hp. Its airworthiness certificate is in the standard class (normal), issued Jun 14, 1971. It is one of 2,054 PA-18-150 aircraft in the FAA registry, 139 of them registered in Montana. About 46% of them were built after it. The NTSB accident database lists one record for this airframe since 2008, the latest on Jan 6, 2025.
Registration
- FAA status
- Valid registration
- Expires
- Oct 31, 2029
- Registrant type
- Government
- Registered owner
- STATE OF MONTANA
- Location
- Helena, MT
- Local FAA office (FSDO)
- Helena FSDO (HLN FSDO) · (406) 441-5240
- Certificate issued
- Jan 20, 2006
- Last FAA action
- Sep 9, 2023
- Mode S code (hex)
- A5AB72
- Mode S code (octal)
- 51325562
- Official record
- registry.faa.gov
Aircraft
- Manufacturer
- PIPER
- Model
- PA-18-150
- Type certificate (TCDS)
- 1A2 (Piper Aircraft Inc.)
- Year manufactured
- 1971
- Serial number
- 18-8945
- Aircraft type
- Fixed wing single engine
- Engine type
- Reciprocating
- Engine
- LYCOMING 0-320 SERIES (180 hp)
- Engines / seats
- 1 / 2
- Weight class
- Up to 12,499 lb
- Airworthiness
- Standard since Jun 14, 1971
- Approved operations
- Normal
Public airports near Helena
| Airport | ID | Distance | Tower | Fuel |
|---|---|---|---|---|
| Helena Regional Helena, MT | KHLN | 2 mi | Towered | 100, 100LL, A |
| Canyon Ferry Townsend, MT | 8U9 | 24 mi | Non-towered | - |
| Boulder Boulder, MT | 3U9 | 27 mi | Non-towered | - |
Straight-line distance from the registration city, from the FAA airport directory (NASR). The registry does not say where an aircraft is based.
NTSB accident and incident records
| Date | Place | Aircraft (as NTSB recorded it) | Damage | Highest injury | NTSB no. |
|---|---|---|---|---|---|
| Jan 6, 2025 | Red Rock, MT | Piper PA-18-150 this airframe | Substantial | None | WPR25LA074 |
From the NTSB aviation accident database (events since 2008, data through Sep 29, 2026), matched by N-number. An N-number can move between aircraft, so each row is checked against the serial number on the current registration.