# N150SG: 1958 Piper PA-18-150, registration cancelled 1986-09-12

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: September 12, 1986
- Status when cancelled: Registration expired, pending cancellation
- Airframe: [Piper PA-18-150](https://openairdocs.org/model/piper-pa-18-150) (registry code 7101828)
- Engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508)
- Data sheets: [TCDS 1A2](https://openairdocs.org/tcds/1A2), [TCDS E-274](https://openairdocs.org/tcds/E-274) (OpenAirDocs)
- Serial number: 18-6375
- Year built: 1958
- Type of aircraft: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Standard, normal, utility
- Airworthiness date: March 10, 1958
- Certificate issued: September 26, 1985
- Last registry action: December 2, 2003
- Mode S code: A0CBC6
- Owners when cancelled: [Cowan Daniel J](https://openairdocs.org/faa-owner/COWAN%20DANIEL%20J), [Cowan Kathleen R](https://openairdocs.org/faa-owner/COWAN%20KATHLEEN%20R)
- Location: [Kenai, AK](https://openairdocs.org/faa-place/AK/Kenai)
- Owner type: Co-owned
- Owner's area on the map: 60.8349° N, 150.7241° W: Placed by OpenAirDocs at the center of ZIP code 99611, within about 13 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N150SG
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=150SG
- Page: https://openairdocs.org/deregistered/N150SG-1986-09-12

From the FAA registry file of November 7, 2026, cancelled registrations. Owners' street addresses are left out. The Mode S code belongs to the N-number, not the airframe.

ADs and bulletins for the Piper PA-18-150: https://openairdocs.org/model/piper-pa-18-150.md

## NTSB investigations (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB ANC86FA151](https://openairdocs.org/ntsb/ANC86FA151), Sep 12, 1986: Piper PA-18 (N150SG), Christian Lake, AK, destroyed, 1 fatal

## FAA accident and incident reports (1)

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [Accident 19860912044659A](https://openairdocs.org/incident/19860912044659A), Sep 12, 1986: Piper PA18150 (N150SG), Christian Lake, AK, Destroyed. The floatplane stalled while turning back over the lake and impacted terrain. CG aft of limit. Alcohol a factor.

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