# N485EC: Messerschmitt-Boelkow-Blohm BO-105S, registration cancelled 2009-07-10 - Type: Cancelled registration (FAA registry, deregistered aircraft) - Cancelled: July 10, 2009 - Exported to: Argentina - Status when cancelled: Valid registration - Airframe: [Messerschmitt-Boelkow-Blohm BO-105S](https://openairdocs.org/model/messerschmitt-boelkow-blohm-bo-105s) (registry code 5626006) - Engine: [Allison 250-C20 series](https://openairdocs.org/engine/allison-250-c20-series) (registry code 03020) - Data sheets: [TCDS H3EU](https://openairdocs.org/tcds/H3EU), [TCDS E4CE](https://openairdocs.org/tcds/E4CE) (OpenAirDocs) - Serial number: S-754 - Type of aircraft: Rotorcraft - Engine type: Turbo-prop - Airworthiness: Standard, normal - Airworthiness date: December 18, 1986 - Certificate issued: October 10, 2008 - Last registry action: October 10, 2008 - Mode S code: A5FB93 - Owner when cancelled: [US Helicopters Inc](https://openairdocs.org/faa-owner/US%20HELICOPTERS%20INC) - Location: [Marshville, NC](https://openairdocs.org/faa-place/NC/Marshville) - Owner type: Corporation - Owner's area on the map: 34.9987° N, 80.3514° W: Placed by OpenAirDocs at the center of ZIP code 28103, within about 7 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based - The mark today: https://openairdocs.org/aircraft/N485EC - FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=485EC - Page: https://openairdocs.org/deregistered/N485EC-2009-07-10 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 Messerschmitt-Boelkow-Blohm BO-105S: https://openairdocs.org/model/messerschmitt-boelkow-blohm-bo-105s.md ## Service difficulty reports (31) Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. - [SDR 74509272007](https://openairdocs.org/sdr/74509272007), Sep 27, 2007: RELAY. FAILED. ODOR OF BURNING INSULATION DETECTED IN CABIN. NO SMOKE PRESENT. CHECKED FOR TRIPPED CIRCUIT BREAKERS. NONE FOUND. RECYCLED/RESET BOTH GENERATORS TO CHECK LOAD O - [SDR 75408212007](https://openairdocs.org/sdr/75408212007), Aug 21, 2007: UNKNOWN. ODOR. FUEL ODOR NOTICEABLE AFTER TAKEOFF. THE AIRCRAFT RETURNED TO BASE. MAINTENANCE INSPECTED BELLY, SUMP DRAINS, AND DRAIN PORTS, FOUND NO EVIDENCE OF LEAKS. ALSO, - [SDR R7MR35306](https://openairdocs.org/sdr/R7MR35306), Jun 4, 2002: TRANSMITTER. LEAKING. PRESSURE TRANSMITTER, LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 2002F00313](https://openairdocs.org/sdr/2002F00313), Nov 11, 2001: TRANSMITTER. INOPERATIVE. PRESSURE TRANSMITTER INOPERATIVE. ERRATIC OPERATION. REPLACED WITH NEW, CORRECTED PROBLEM. (M) - [SDR R7MR34237](https://openairdocs.org/sdr/R7MR34237), Oct 25, 2001: INDICATOR. FAILED. TRIPLE RPM INDICATOR, UNIT INOPERATIVE. OUT OF BOX FAILURE. NR 2 NEEDLE READS 12 PERCENT LOW. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 2001F00697](https://openairdocs.org/sdr/2001F00697), Aug 22, 2001: ACTUATOR. INTERMITTENT. THROTTLE TRIM LINK ACTUATOR, OPERATES INTERMITTENTLY. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. (M) - [SDR R7MR33353](https://openairdocs.org/sdr/R7MR33353), Apr 11, 2001: ACTUATOR. INOPERATIVE. UNIT INOPERATIVE, N2 TRIM ON NR 1 ENGINE DOES NOT WORK. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR R7MR33080](https://openairdocs.org/sdr/R7MR33080), Mar 29, 2001: GEARBOX. CONTAMINATED. AFTER SERVICING THE GEARBOX AND ON FIRST RUN THE PILOT NOTICED A CHIP LIGHT. THE AIRCRAFT WAS SHUTDOWN AND THE GEARBOX INSPECTED. UPON REMOVING THE OIL SITE GLA - [SDR R7MA75432437](https://openairdocs.org/sdr/R7MA75432437), Nov 25, 2000: TRANSMITTER. INOPERATIVE. PRESSURE TRANSMITTER INOPERATIVE. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 20001017SH018](https://openairdocs.org/sdr/20001017SH018), Aug 1, 2000: SWITCH. INOPERATIVE. OIL PRESSURE WARNING SWITCH UNIT INOPERATIVE. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. (X) - [SDR 2000ZZZX748](https://openairdocs.org/sdr/2000ZZZX748), Jan 20, 2000: INDICATOR. READS HIGH. ROTOR NEEDLE WILL NOT ALIGN WITH ENGINE NEEDLES. INDICATES APPROXIMATELY 2 PERCENT HIGH. MOISTURE NOTICED ON INDICATOR LENS. REPLACED WITH NEW UNIT, CORRECTED P - [SDR 99ZZZX4336](https://openairdocs.org/sdr/99ZZZX4336), Aug 11, 1999: ACTUATOR. INOPERATIVE. FUEL CONTROL ACTUATOR INOPERATIVE. WILL NOT MOVE IN EITHER DIRECTION. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 2000ZZZX801](https://openairdocs.org/sdr/2000ZZZX801), Jul 26, 1999: TRANSMITTER. INOPERATIVE. TRANSMMITTER INOPERATIVE. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 99ZZZX842](https://openairdocs.org/sdr/99ZZZX842), Jan 7, 1999: TRANSMITTER. ERRATIC. PRESSURE TRANSMITTER ERRATIC. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 99ZZZX844](https://openairdocs.org/sdr/99ZZZX844), Sep 25, 1998: TRANSMITTER. INOPERATIVE. PRESSURE TRANSMITTER UNIT INOPERATIVE. INDICATOR PEGGED. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 98ZZZX3706](https://openairdocs.org/sdr/98ZZZX3706), Sep 14, 1998: COMBUSTION CASE. CRACKED. DURING DAILY INSPECTION, ARM PIT AREA OF COMBUSTION CASE FOUND CRACKED, APPROXIMATELY 2.50 INCHES LONG. PILOTS NOTED APPROXIMATELY 20 DEGREES TOT INCREASE ON TH - [SDR 98ZZZX3104](https://openairdocs.org/sdr/98ZZZX3104), Jul 2, 1998: TRANSMITTER. ERRATIC. PRESSURE TRANSMITTER HAS ERRATIC INDICATIONS. INSTALLED S/N COULD BE 12917. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 98ZZZX3105](https://openairdocs.org/sdr/98ZZZX3105), Apr 11, 1998: TRANSMITTER. FAILED. PRESSURE TRANSMITTER UNIT INOPERATIVE. FUEL PRESURE INDICATOR MAXING OUT. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 98ZZZX3103](https://openairdocs.org/sdr/98ZZZX3103), Mar 23, 1998: TRANSMITTER. FAILED. PRESSURE TRANSMITTER UNIT INOPERATIVE. INDICATING HIGH PRESSURE. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 98ZZZX1802](https://openairdocs.org/sdr/98ZZZX1802), Mar 2, 1998: TRANSMITTER. FAILED. PRESSURE TRANSMITTER UNIT CAUSES PRESSURE GAUGE FLUCTUATION ON HIGH SIDE. TRANSMITTER REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 98ZZZX1801](https://openairdocs.org/sdr/98ZZZX1801), Feb 25, 1998: TRANSMITTER. FAILED. PRESSURE TRANSMITTER UNIT CAUSES PRESSURE GAUGE FLUCTUATION ON HIGH SIDE. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 98ZZZX1800](https://openairdocs.org/sdr/98ZZZX1800), Feb 14, 1998: TRANSMITTER. FAILED. PRESSURE TRANSMITTER UNIT CAUSES PRESSURE GAUGE FLUCTUATION ON HIGH SIDE. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 98ZZZX1799](https://openairdocs.org/sdr/98ZZZX1799), Feb 2, 1998: TRANSMITTER. FAILED. PRESSURE TRANSMITTER UNIT INOPERATIVE. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 98ZZZX1798](https://openairdocs.org/sdr/98ZZZX1798), Dec 31, 1997: TRANSMITTER. FAILED. PRESSURE TRANSMITTER UNIT INOPERATIVE. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 97ZZZX5068](https://openairdocs.org/sdr/97ZZZX5068), Oct 24, 1997: TRANSMITTER. ERRATIC. PRESSURE TRANSMITTER ERRATIC. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 97ZZZX4112](https://openairdocs.org/sdr/97ZZZX4112), May 28, 1997: TRANSMITTER. MALFUNCTION. PRESSURE TRANSMITTER FALSE INDICATIONS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 97ZZZX4114](https://openairdocs.org/sdr/97ZZZX4114), May 11, 1997: TRANSMITTER. INTERMITTENT. TRANSMITTER UNIT SENDS FALSE INDICATIONS INTERMITTENTLY. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 97ZZZX4113](https://openairdocs.org/sdr/97ZZZX4113), Apr 8, 1997: TRANSMITTER. INTERMITTENT. TRANSMITTER UNIT OPERATES INTERMITTENTLY. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 97ZZZX2561](https://openairdocs.org/sdr/97ZZZX2561), Mar 19, 1997: TRANSMITTER. DEFECTIVE. PRESSURE TRANSMITTER UNIT CAUSES PRESSURE GAUGE TO FLUCTUATE. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 97ZZZX2562](https://openairdocs.org/sdr/97ZZZX2562), Feb 17, 1997: TRANSMITTER. FAILED. FUEL PRESSURE GAUGE PEGS HIGH AS SOON AS MASTER POWER IS TURNED ON. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 97ZZZX2563](https://openairdocs.org/sdr/97ZZZX2563), Jan 27, 1997: TRANSMITTER. FAILED. WITH BOOST PUMP OF FUEL PRESSURE GAUGE INDICATES 1 BAR. WITH PUMP ON, THE GAUGE WILL PEG HIGH. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. ## Other aircraft with N485EC - [Registered now](https://openairdocs.org/aircraft/N485EC): Eurocopter Deutschland MBB-BK 117 C-2, S/N 9348, built 2010 --- 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.