# N33RA: 1937 Lockheed 12A - Status: Valid registration - Airframe: [Lockheed 12A](https://openairdocs.org/model/lockheed-12a) (registry code 5261402, 8 seats) - Engine: [Pratt & Whitney R-985 series](https://openairdocs.org/engine/pratt-whitney-r-985-series) (registry code 52008) - Data sheets: [TCDS TC 616](https://openairdocs.org/tcds/TC%20616) (Lockheed Aircraft Corporation) (OpenAirDocs) - Serial number: 1239 - Year built: 1937 - Type: Fixed wing multi engine - Engine type: Reciprocating - Airworthiness: Standard - Airworthiness date: July 16, 1956 - Certificate issued: August 25, 2000 - Expires: June 30, 2028 - Mode S code: A394EE - Registered owner: [Warden Richard L](https://openairdocs.org/faa-owner/WARDEN%20RICHARD%20L) - Location: [Canby, OR](https://openairdocs.org/faa-place/OR/Canby) - Owner type: Individual - Owner's area on the map: 45.2208° N, 122.6683° W: Placed by OpenAirDocs at the center of ZIP code 97013, within about 4 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based - FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=33RA - Page: https://openairdocs.org/aircraft/N33RA From the FAA registry file of October 24, 2026. ADs below are matched by the registry's airframe and engine model codes. They may apply; each AD's applicability can narrow it by serial number, part number or installed equipment. This is not a compliance determination. The registry lists only the engine series, so ADs for every Pratt & Whitney R-985 model are included. ## ADs that may apply (OpenAirDocs): 1 in force ### Matched by airframe (Lockheed 12A) - [AD 93-14-12](https://openairdocs.org/ad/93-14-12): Crewmember Protective Breathing Equipment Units · Airbus A300 B2-1A, A300 B2-1C, A300 B2-203 and 201 more. Effective Sep 2, 1993 ### Matched by engine (Pratt & Whitney R-985 series) None in force. ## Information bulletins (advisory) None matched. ## NTSB investigations None matched to N33RA. ## 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. - [Incident 20000831026959I](https://openairdocs.org/incident/20000831026959I), Aug 31, 2000: Lkheed 12A (N33RA), Bend, OR, Minor damage. (-23)A Lockheed-12A, N33RA, piloted by [privacy data omitted] made a normal approach to land at Sunriver, Oregon airport, S21, with a slight crosswind from the… ## Service difficulty reports (1) As reported by operators and repair stations. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. - [SDR 20001019SH014](https://openairdocs.org/sdr/20001019SH014), Aug 31, 2000: CASTING. FAILED. RIGHT FLANGE OR GEAR DRIVE CASTING FAILED UNDER LOAD DURING LANDING. THIS CAUSED THE JACK SCREW TO BEND ALLOWING THE RIGHT MAIN LANDING GEAR TO COLLAPSE. (X) ## STCs that may be installed (OpenAirDocs) (19) Approved for this aircraft's airframe or engine model, in force first, then newest. The registry doesn't record which STCs an aircraft has; its records do. ### Approved for the airframe (Lockheed 12A) - [STC SA02571SE](https://openairdocs.org/stc/SA02571SE): Installation of Garmin G500/G600 TXi Integrated Avionics System (Primary Flight Display, Multi-Function Display, and Engine Indicating System Display). Garmin International Inc - [STC SA04652CH](https://openairdocs.org/stc/SA04652CH): To allow use of 100R grade aviation fuel meeting Swift Fuel, LLC specification. Swift Fuels LLC - [STC SA02019SE-D](https://openairdocs.org/stc/SA02019SE-D): Installation of Garmin Model GTN 625/635/650; 725/750 Navigation System. Garmin International Inc - [STC SA04046CH PAGE 1](https://openairdocs.org/stc/SA04046CH%20PAGE%201): Installation of L-3 GENESIS (TM) Electronic Standby Instrument System (ESI-500/MAG-500). Acron Aviation Inc - [STC SA01757WI](https://openairdocs.org/stc/SA01757WI): To allow the use of UL91 or UL94 (minimum) grade aviation fuel. Swift Fuels LLC - [STC SA02444AK](https://openairdocs.org/stc/SA02444AK): Approval of the L-3 Communications NGT 9000/9000R ADS-B system installed. ADS-B Technologies LLC - [STC SA11174SC PAGE 1](https://openairdocs.org/stc/SA11174SC%20PAGE%201): Installation of BendixKing by Honeywell KSN 770 and KSN 765 WAAS LPV approach capable nav/comm systems. Honeywell International Inc (Bendix King) - [STC SA01831WI](https://openairdocs.org/stc/SA01831WI): To allow the use of UL91 (minimum) grade aviation fuel. Petersen Aviation Inc - [STC SA02153LA-D PAGE 1](https://openairdocs.org/stc/SA02153LA-D%20PAGE%201): Installation of Garmin G600 Primary Flight Display (PFD) and Multifunction Display (MFD) System. Garmin International Inc - [STC SA01282NY](https://openairdocs.org/stc/SA01282NY): Installation of Airwolf remote mounted engine oil filter kit AFC-K015 on aircraft powered by Pratt & Whitney radial reciprocating engine Series R-985, R-1340 and R-1830. Airwolf Filter Corporation - [STC SA02119SE PAGE 1](https://openairdocs.org/stc/SA02119SE%20PAGE%201): Installation of Garmin GDL 88 ADS-B UAT Transceiver System. Garmin International Inc - [STC SA02442AK PAGE 1](https://openairdocs.org/stc/SA02442AK%20PAGE%201): Approval of the L-3 Communications NGT 2000/2500 ADS-B system. ADS-B Technologies, LLC - [STC SA02121SE](https://openairdocs.org/stc/SA02121SE): Installation of Garmin GTS 825 (TAS) or GTS 855 (TCAS I) Traffic System. Garmin International Inc - [STC SA02016SE-D](https://openairdocs.org/stc/SA02016SE-D): Installation of Garmin GTS 800, GTS 820 or GTS 850 Traffic System. Garmin International Inc - [STC SA4172NM](https://openairdocs.org/stc/SA4172NM): Installation of Aviation Development oil filter. Aviation Development Corporation - [STC SA4005NM](https://openairdocs.org/stc/SA4005NM): Precise Flight Inc. Pulselite Control System. Precise Flight Inc - [STC SA1860WE](https://openairdocs.org/stc/SA1860WE): ONE ONLY STC, SN 1229: Installation of Goodyear Wheels and Brakes. Harold S. Firth - [STC SA1393WE](https://openairdocs.org/stc/SA1393WE): ONE ONLY STC, SN 1205: Installation of Hamilton Standard 22D30/6531A-15 hyrdromatic propellers in lieu of Hamilton Standard 22D30/6181A-6 Hydromatic propellers. Swift Air Service - [STC SA02153LA-D](https://openairdocs.org/stc/SA02153LA-D) (historical): Installation of Garmin G600 Primary Flight Display (PFD) and Multifunction Display (MFD) System. Garmin International Inc ## Related - Other Lockheed 12A aircraft: https://openairdocs.org/model/lockheed-12a/aircraft.md - The Pratt & Whitney R-985 series engine: https://openairdocs.org/engine/pratt-whitney-r-985-series.md --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.