# N276MK: 1959 Dornier DO27A4 - Status: Valid registration - Airframe: [Dornier DO27A4](https://openairdocs.org/model/dornier-do27a4) (registry code 2990704, 8 seats) - Engine: [Lycoming GO-480-G1B6](https://openairdocs.org/engine/lycoming-go-480-g1b6) (registry code 42181) - Data sheets: [TCDS E-275](https://openairdocs.org/tcds/E-275) (Lycoming Engines) (OpenAirDocs) - Serial number: 383 - Year built: 1959 - Type: Fixed wing single engine - Engine type: Reciprocating - Airworthiness: Experimental, exhibition - Airworthiness date: May 24, 2007 - Certificate issued: December 18, 2024 - Expires: December 31, 2031 - Mode S code: A2BDE3 - Registered owner: [Turbine Motor Conversions LLC](https://openairdocs.org/faa-owner/TURBINE%20MOTOR%20CONVERSIONS%20LLC) - Location: [Orange, CA](https://openairdocs.org/faa-place/CA/Orange) - Owner type: LLC - Owner's area on the map: 33.7954° N, 117.7647° W: Placed by OpenAirDocs at the center of ZIP code 92869, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based - FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=276MK - Page: https://openairdocs.org/aircraft/N276MK 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): 11 in force ### Matched by airframe (Dornier DO27A4) None in force. ### Matched by engine (Lycoming GO-480-G1B6) - [AD 2012-03-07](https://openairdocs.org/ad/2012-03-07): Carburetor · Lycoming Engines GO-435, GO-435-C2 (O-435-17), GO-435-C2A and 389 more. Effective Mar 27, 2012 - [AD 2004-10-14](https://openairdocs.org/ad/2004-10-14): Crankshaft gear · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 642 more. Effective Jun 25, 2004 - [AD 2003-14-03](https://openairdocs.org/ad/2003-14-03): Rotary fuel pumps · Lycoming Engines AEIO-540-D4A5, AEIO-540-D4B5, AEIO-540-D4C5 and 262 more. Effective Aug 14, 2003 - [AD 97-15-11](https://openairdocs.org/ad/97-15-11): Cylinder kits · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 538 more. Effective Aug 12, 1997 - [AD 92-12-05](https://openairdocs.org/ad/92-12-05): Piston Pins · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 532 more. Effective Jul 10, 1992 - [AD 90-04-06 R1](https://openairdocs.org/ad/90-04-06-R1): Propeller Governor External Oil Line · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 427 more. Effective May 28, 1991 - [AD 69-25-08](https://openairdocs.org/ad/69-25-08): Reduction Gear Assemblies · Lycoming Engines GO-435-C2A, GO-435-C2A2, GO-480-A1A and 61 more. Effective Feb 19, 1970 - [AD 66-06-03](https://openairdocs.org/ad/66-06-03): Connecting Rod Assemblies · Lycoming Engines GO-435-C2 (O-435-17), GO-435-C2A, GO-435-C2A2 and 317 more. Effective Jan 16, 1969 - [AD 62-23-05](https://openairdocs.org/ad/62-23-05): Propeller Shaft Oil Seal Rings · Lycoming Engines GO-435-C2 (O-435-17), GO-435-C2A, GO-435-C2A2 and 49 more. Effective Nov 14, 1962 - [AD 60-11-06](https://openairdocs.org/ad/60-11-06): Crankshaft · Lycoming Engines GO-480-C1B6, GO-480-C1D6, GO-480-C2C6 and 13 more - [AD 59-10-07](https://openairdocs.org/ad/59-10-07): Cylinder Baffle Clamps · Lycoming Engines GO-480-A1A, GO-480-B, GO-480-B1A6 and 58 more ### Historical (superseded or no longer in force) - [AD 98-18-12](https://openairdocs.org/ad/98-18-12) (historical): Fuel Pump · Textron Lycoming, AVCO AEIO-540-D4A5, AEIO-540-D4B5, AEIO-540-D4C5 and 249 more. Effective Sep 28, 1998 ## Information bulletins (advisory) (2 in force) - [SAIB NE-19-08](https://openairdocs.org/saib/NE-19-08): Reciprocating Engine Cylinder Section - Lycoming Engines Parallel Valve Cylinders. Issued May 2, 2019 - [SAIB NE-14-13](https://openairdocs.org/saib/NE-14-13): Reciprocating Engine - Cylinder Mounting Studs. Issued Mar 24, 2014 ## 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 SEA04LA196](https://openairdocs.org/ntsb/SEA04LA196), May 8, 2004: Dornier DO27A4 (N276MK), Marion, MT, substantial damage. Probable cause: The pilot's improper landing flare resulting in a hard landing. ## 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 20040508035049A](https://openairdocs.org/incident/20040508035049A), May 8, 2004: Dorner DO27A4 (N276MK), Marion, MT, Substantial damage. (-23) On may 8, 2004, a dornier DO27A4, N276MK, made a hard Landing at the Cabin Creek airport, near Marion, Montana, causing substantial damage to the left… ## 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) (16) 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 engine (Lycoming GO-480-G1B6) - [STC SE01954SE](https://openairdocs.org/stc/SE01954SE): Installation of engine crankcase seal. Ly-Con Rebuilding Company - [STC SE03309CH](https://openairdocs.org/stc/SE03309CH): Installation of Engine Preheat Kit, p/n TSP6CYL-2927-115 for 115 volt application. Hartzell Propeller Inc - [STC SE124SO](https://openairdocs.org/stc/SE124SO): Installation of two (2) Roto- Master Turbochargers Models 3DT5FF10J2, P/N 600572-00 (formerly Rajay Model, 315F10, P/N RJ0080-102). TALCO Aviation - [STC SE8628SW](https://openairdocs.org/stc/SE8628SW): Installation of oil nozzles for lubrication of cam and filters. Cygnet Aerospace Corp - [STC SE1339SW](https://openairdocs.org/stc/SE1339SW): Modify pistons to Drawings 11007 and 11015; piston rings. Continental Motors, Inc - [STC SE4408SW](https://openairdocs.org/stc/SE4408SW): Miscellaneous engine cylinder replacement parts. Continental Motors, Inc. Lists GO-480 Series - [STC SE7505SW](https://openairdocs.org/stc/SE7505SW): Installation of any or all parts listed on Airmotive Engineering Drawing List NO. 852-1, Rev. 1, dated10/4/88, or later FAA approved revision. Continental Motors, Inc. Lists GO-480 Series - [STC SE7666SW](https://openairdocs.org/stc/SE7666SW): Installation of parts listed on Airmotive List 8810-3, Rev 6. Continental Motors, Inc. Lists GO-480 Series - [STC SE7582SW](https://openairdocs.org/stc/SE7582SW): Grinding of high compression NITRIDED Cylinders to .010 oversize, as an alternative to chrome plating or rebarreling, and the installation of SL10207 P10 Piston, SL74241 P10 Top and second compression ring, and SL 73857 P10 oil control ring. Superior Air Parts, Inc - [STC SE914NW](https://openairdocs.org/stc/SE914NW): Installation of a propeller governor adapter with a combination adapter/valve to provide propeller reversing control. McHugh Aviation Inc. Lists GO-480 Series - [STC SE1779NM](https://openairdocs.org/stc/SE1779NM): Installation of Precise Flight, Inc. Standby Vacuum System SVS III. Precise Flight Inc - [STC SE00350SE](https://openairdocs.org/stc/SE00350SE): Installation of sump mounted chip detector. Aviation Development Corporation - [STC SE452NE](https://openairdocs.org/stc/SE452NE): Installation and usage of 'Mobil AV 1' aviation oil. Mobil Research & Development Corp. Lists GO-480 Series - [STC SE5879SW](https://openairdocs.org/stc/SE5879SW): Use of Phillips X/C II 20W-50 and25W-60 oil (OSS 55875) in all Avco reciprocating aircraft engines from 65 to 450 BHP. Phillips Petroleum Co. Lists GO-480 Series - [STC SE5924SW](https://openairdocs.org/stc/SE5924SW): Installation of stainless steel replacement exhaust studs on AVCO engines. Perrigo & Steele Aircraft Engr Company. Lists GO-480 Series - [STC SE128NE](https://openairdocs.org/stc/SE128NE): Use of AMS/OIL 15W 50 synthetic piston aircraft oil in Avco engines. AMS/OIL. Lists GO-480 Series ## Related - Other Dornier DO27A4 aircraft: https://openairdocs.org/model/dornier-do27a4/aircraft.md - The Lycoming GO-480-G1B6 engine: https://openairdocs.org/engine/lycoming-go-480-g1b6.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.