# N4727A: 1956 Piper PA-18, registration cancelled 2016-08-17

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: August 17, 2016
- Status when cancelled: Third renewal notice
- Airframe: [Piper PA-18](https://openairdocs.org/model/piper-pa-18) (registry code 7101802)
- 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: 18-4948
- Year built: 1956
- Type of aircraft: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Multiple
- Airworthiness date: June 7, 1956
- Certificate issued: March 5, 1980
- Last registry action: July 17, 2007
- Mode S code: A5CBD6
- Owners when cancelled: [Williams Air Service](https://openairdocs.org/faa-owner/WILLIAMS%20AIR%20SERVICE), [Williams Richard C](https://openairdocs.org/faa-owner/WILLIAMS%20RICHARD%20C), [Williams Korlyn K](https://openairdocs.org/faa-owner/WILLIAMS%20KORLYN%20K)
- Location: [Lewiston, ID](https://openairdocs.org/faa-place/ID/Lewiston)
- Owner type: Co-owned
- Owner's area on the map: 46.2517° N, 116.9250° W: Placed by OpenAirDocs at the center of ZIP code 83501, within about 9 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N4727A
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=4727A
- Page: https://openairdocs.org/deregistered/N4727A-2016-08-17

From the FAA registry file of October 29, 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: https://openairdocs.org/model/piper-pa-18.md

## NTSB investigations (2)

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 ANC74AA075](https://openairdocs.org/ntsb/ANC74AA075), May 23, 1974: Piper PA-18 (N4727A), Palmer, AK, substantial damage, 1 fatal
- [NTSB SEA69D0243](https://openairdocs.org/ntsb/SEA69D0243), Jan 21, 1969: Piper PA-18 (N4727A), Peerless, MT, substantial damage

## 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 19740523020549A](https://openairdocs.org/incident/19740523020549A), May 23, 1974: Piper PA18 (N4727A), Palmer, AK, Substantial damage. Looking for campsite. Plt saw black bear,banked acft. Flew into rising terrain.

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