# N18906: Lockheed 12A - Status: Valid registration - Airframe: [Lockheed 12A](https://openairdocs.org/model/lockheed-12a) (registry code 5261402, 8 seats) - Data sheets: [TCDS TC 616](https://openairdocs.org/tcds/TC%20616) (Lockheed Aircraft Corporation) (OpenAirDocs) - Serial number: 1277 - Type: Fixed wing multi engine - Engine type: Reciprocating - Certificate issued: May 8, 2003 - Expires: April 30, 2030 - Mode S code: A16492 - Registered owners: [Whittlesey Leslie Trustee](https://openairdocs.org/faa-owner/WHITTLESEY%20LESLIE%20TRUSTEE), [Whittlesey Susan W Trustee](https://openairdocs.org/faa-owner/WHITTLESEY%20SUSAN%20W%20TRUSTEE) - Location: [Dana Point, CA](https://openairdocs.org/faa-place/CA/Dana%20Point) - Owner type: Co-owned - Owner's area on the map: 33.4751° N, 117.7056° W: Placed by OpenAirDocs at the center of ZIP code 92629, within about a mile (OpenAirDocs). The owner's mailing address, not where the aircraft is based - FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=18906 - Page: https://openairdocs.org/aircraft/N18906 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. ## 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 ## Information bulletins (advisory) None matched. ## NTSB investigations None matched to N18906. ## FAA accident and incident reports None matched to N18906. ## Service difficulty reports None filed for this aircraft. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. ## 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 ## Earlier aircraft with N18906 The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N18906 before. - [Cancelled 1983-06-15](https://openairdocs.org/deregistered/N18906-1983-06-15): Beech C24R, S/N MC-522. Administratively canceled. Owner: [Wintell Associates](https://openairdocs.org/faa-owner/WINTELL%20ASSOCIATES), [Denver, CO](https://openairdocs.org/faa-place/CO/Denver) - [Cancelled 1943-05-07](https://openairdocs.org/deregistered/N18906-1943-05-07): Ryan Aeronautical ST-A, S/N 200. Owner: [Aircraft Sales Co](https://openairdocs.org/faa-owner/AIRCRAFT%20SALES%20CO), [Fort Worth, TX](https://openairdocs.org/faa-place/TX/Fort%20Worth) ## Related - Other Lockheed 12A aircraft: https://openairdocs.org/model/lockheed-12a/aircraft.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.