# N122TH: 1998 Eurocopter COLIBRI EC 120B - Status: Valid registration - Airframe: [Eurocopter COLIBRI EC 120B](https://openairdocs.org/model/eurocopter-colibri-ec-120b) (registry code 8680985, 5 seats) - Engine: [Turbomeca ARRIUS-2B1](https://openairdocs.org/engine/turbomeca-arrius-2b1) (registry code 60015) - Data sheets: [TCDS R0001RD](https://openairdocs.org/tcds/R0001RD) (Airbus Helicopters), [TCDS E34NE](https://openairdocs.org/tcds/E34NE) (Safran Helicopter Engines S.A.) (OpenAirDocs) - Serial number: 1017 - Year built: 1998 - Type: Rotorcraft - Engine type: Turbo-shaft - Airworthiness: Standard, normal - Airworthiness date: February 18, 1999 - Certificate issued: January 27, 2020 - Expires: January 31, 2030 - Mode S code: A05CD1 - Registered owner: [Mwn Holdings LLC](https://openairdocs.org/faa-owner/MWN%20HOLDINGS%20LLC) - Location: [Saint Louis, MO](https://openairdocs.org/faa-place/MO/Saint%20Louis) - Owner type: LLC - Owner's area on the map: 38.6448° N, 90.2534° W: Placed by OpenAirDocs at the center of ZIP code 63108, 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=122TH - Page: https://openairdocs.org/aircraft/N122TH 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): 7 in force ### Matched by airframe (Eurocopter COLIBRI EC 120B) None in force. ### Matched by engine (Turbomeca ARRIUS-2B1) - [AD 2021-26-26](https://openairdocs.org/ad/2021-26-26): Engine Controls · Safran Helicopter Engines Arrius 2B1, Arrius 2B1A and Arrius 2B2. Effective Feb 23, 2022 - [AD 2021-17-05](https://openairdocs.org/ad/2021-17-05): Fuel Controlling System · Safran Helicopter Engines Arrius 2B1, Arrius 2B1A, Arrius 2B2 and 1 more. Effective Oct 12, 2021 - [AD 2018-12-03](https://openairdocs.org/ad/2018-12-03): Fuel Controlling System · Safran Helicopter Engines Arrius 2B1 and Arrius 2F. Effective Aug 9, 2018 - [AD 2018-07-17](https://openairdocs.org/ad/2018-07-17): Turbine Section · Safran Helicopter Engines Arrius 2B1, Arrius 2B1A, Arrius 2B2 and 1 more. Effective Apr 27, 2018 - [AD 2008-19-11](https://openairdocs.org/ad/2008-19-11): Electronic control (EEC) unit · Turbomeca Arrius 2B1, Arrius 2B1A, Arrius 2B2 and 1 more. Effective Oct 8, 2008 - [AD 2006-26-07](https://openairdocs.org/ad/2006-26-07): A simultaneous interruption of the lubrication on both engines may lead to a double non-commanded in-flight shutdown. · Turbomeca Arrius 2B1, Arrius 2B1A and Arrius 2B2. Effective Jan 18, 2007 - [AD 2003-19-06](https://openairdocs.org/ad/2003-19-06): Gas generator high pressure (HP) turbine disk · Turbomeca Arrius 2B1, Arrius 2B1A and Arrius 2K1. Effective Oct 22, 2003 ### Historical (superseded or no longer in force) - [AD 2014-04-06](https://openairdocs.org/ad/2014-04-06) (historical): Hydro-mechanical metering unit (HMU) · Turbomeca Arrius 2B1, Arrius 2B1A, Arrius 2B2 and 1 more. Effective Mar 31, 2014 - [AD 2013-11-09](https://openairdocs.org/ad/2013-11-09) (historical): Fuel injection manifolds and the privilege injector · Turbomeca Arrius 2B1 and Arrius 2F. Effective Jul 5, 2013 - [AD 2001-08-14 R1](https://openairdocs.org/ad/2001-08-14-R1) (historical): Right injector half manifold and left injector half manifold · Turbomeca Arrius 2B, Arrius 2B1 and Arrius 2F. Effective Feb 23, 2006 - [AD 2005-12-08](https://openairdocs.org/ad/2005-12-08) (historical): Engine Electronic Control Unit (EECU) · Turbomeca Arrius 2B1, Arrius 2B1A and Arrius 2B2. Effective Jun 29, 2005 - [AD 2001-08-14](https://openairdocs.org/ad/2001-08-14) (historical): Fuel Injector Manifold · Turbomeca Arrius 2B, Arrius 2B1 and Arrius 2F. Effective May 31, 2001 ## Information bulletins (advisory) None matched. ## 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 FTW99LA085](https://openairdocs.org/ntsb/FTW99LA085), Feb 26, 1999: Eurocopter Colibri EC120B (N122TH), Springtown, TX, substantial damage. Probable cause: The improper touchdown executed by the pilot. Factors were the tail wind condition, and the manufacturer's inadequate design of the P3 pipe supports, which resulted in a fatigue fracture of the P3… ## 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 19990226001789A](https://openairdocs.org/incident/19990226001789A), Feb 26, 1999: Urocop EC120B (N122TH), Springtown, TX, Substantial damage. Eurocopter colibri EC-120B helicopter was on a ferry flight when it made an emergency landing in a field for unknown reasons and rolled over on landing, other… ## 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) None matched to this aircraft's models. ## Related - Other Eurocopter COLIBRI EC 120B aircraft: https://openairdocs.org/model/eurocopter-colibri-ec-120b/aircraft.md - The Turbomeca ARRIUS-2B1 engine: https://openairdocs.org/engine/turbomeca-arrius-2b1.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.