# N10UM: 1990 Messerschmitt BK 117 B-1, registration cancelled 2013-06-05 - Type: Cancelled registration (FAA registry, deregistered aircraft) - Cancelled: June 5, 2013 - Status when cancelled: Valid registration - Airframe: [Messerschmitt BK 117 B-1](https://openairdocs.org/model/messerschmitt-bk-117-b-1) (registry code 5626012) - Engine: [Lycoming LTS-101 series](https://openairdocs.org/engine/lycoming-lts-101-series) (registry code 41560) - Data sheets: [TCDS H13EU](https://openairdocs.org/tcds/H13EU), [TCDS E5NE](https://openairdocs.org/tcds/E5NE) (OpenAirDocs) - Serial number: 7231 - Year built: 1990 - Type of aircraft: Rotorcraft - Engine type: Turbo-shaft - Airworthiness: Standard, transport - Airworthiness date: December 11, 1990 - Certificate issued: June 3, 2010 - Last registry action: August 16, 2011 - Mode S code: A00429 - Owner when cancelled: [Air Methods Corp](https://openairdocs.org/faa-owner/AIR%20METHODS%20CORP) - Location: [Englewood, CO](https://openairdocs.org/faa-place/CO/Englewood) - Owner type: Corporation - Owner's area on the map: 39.5732° N, 104.8649° W: Placed by OpenAirDocs at the center of ZIP code 80112, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based - The mark today: https://openairdocs.org/aircraft/N10UM - FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=10UM - Page: https://openairdocs.org/deregistered/N10UM-2013-06-05 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 BK 117 B-1: https://openairdocs.org/model/messerschmitt-bk-117-b-1.md ## Service difficulty reports (57, newest 50) Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. - [SDR R7MR34029](https://openairdocs.org/sdr/R7MR34029), Jul 23, 2001: SLEEVE. WORN. SLEEVE, WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNITS, CORRECTED PROBLEM. - [SDR R7MR34030](https://openairdocs.org/sdr/R7MR34030), Jul 23, 2001: RING. WORN. FLOW RING, WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR R7MR33479](https://openairdocs.org/sdr/R7MR33479), May 1, 2001: TRANSDUCER. INOPERATIVE. UNIT INOPERATIVE. GAUGE WENT TO -0-. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR R7MA723132520](https://openairdocs.org/sdr/R7MA723132520), Sep 19, 2000: TRANSMITTER. INOPERATIVE. PRESSURE TRANSMITTER INOPERATIVE UPON INSTALLATION. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 20001214SH038](https://openairdocs.org/sdr/20001214SH038), Sep 12, 2000: TURBINE WHEEL. WORN. ROTOR ASSY, INSERTABLE BLADED, POWER TURBINE RETENTION PLUG WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. (X) - [SDR 20000721SH006](https://openairdocs.org/sdr/20000721SH006), Mar 27, 2000: MANIFOLD. MALFUNCTIONED. FUEL MANIFOLD ASSY CAUSES ENGINE TO RUN HOT. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. (X) - [SDR 20000607SH013](https://openairdocs.org/sdr/20000607SH013), Feb 14, 2000: TRANSMITTER. FLUCTUATES. PRESSURE TRANSMITTER UNIT CAUSES PRESSURE GAUGE TO FLUCTUATE. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. (X) - [SDR 2000ZZZX747](https://openairdocs.org/sdr/2000ZZZX747), Jan 15, 2000: WIRE. SHORTED. INTERNAL SHORT. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 2000ZZZX763](https://openairdocs.org/sdr/2000ZZZX763), Dec 14, 1999: IGNITION LEAD. DAMAGED. INTERNAL SHORT. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 2000ZZZX789](https://openairdocs.org/sdr/2000ZZZX789), Sep 21, 1999: TRANSMITTER. MALFUNCTIONED. TRANSMITTER CAUSES PRESSURE GAUGE TO FLUCTUATE. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 99ZZZX3803](https://openairdocs.org/sdr/99ZZZX3803), Jul 13, 1999: SPRING. WORN. SPRING WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 99ZZZX3877](https://openairdocs.org/sdr/99ZZZX3877), May 11, 1999: TRANSDUCER. INOPERATIVE. TRANSDUCER UNIT INOPERATIVE. TORQUE GAUGE GOES TO ZERO. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 99ZZZX1687](https://openairdocs.org/sdr/99ZZZX1687), Dec 3, 1998: PT ROTOR. DAMAGED. FAILED SB LT101-72-10-0153. EXCESSIVE IBPT BLADE SHIFT. REPLACED WITH USED UNIT, CORRECTED PROBLEM. PART TC: 6,993.8. - [SDR 99ZZZX772](https://openairdocs.org/sdr/99ZZZX772), Jul 23, 1998: TRANSMITTER. INTERMITTENT. TRANSMITTER UNIT OPERATES INTERMITTENTLY. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 97ZZZX4095](https://openairdocs.org/sdr/97ZZZX4095), May 1, 1997: SWITCH. FAULTY. PRESSURE SWITCH FAULTY. COCKPIT WARNING LAMP ILLUMINATES INTERMITTENTLY. LIGHT WOULD COME ON CONSISTENTLY WITH NO PRESSURE APPLIED TO IT. REPLACED WITH NEW UNIT - [SDR 97ZZZX4096](https://openairdocs.org/sdr/97ZZZX4096), Apr 10, 1997: BEARING. WORN. BEARING WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH 2 EACH NEW UNITS, CORRECTED PROBLEM. - [SDR 97ZZZX51](https://openairdocs.org/sdr/97ZZZX51), Sep 16, 1996: SEAL. LEAKING. SEALS LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH 2 EACH NEW UNITS, CORRECTED PROBLEM. - [SDR 97ZZZX50](https://openairdocs.org/sdr/97ZZZX50), Sep 16, 1996: SEAL. LEAKING. NR 2 BEARING SEAL LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 97ZZZX49](https://openairdocs.org/sdr/97ZZZX49), Sep 16, 1996: SEAL. LEAKING. SEAL LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 97ZZZX48](https://openairdocs.org/sdr/97ZZZX48), Sep 16, 1996: SEAL. LEAKING. SEAL LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 97ZZZX47](https://openairdocs.org/sdr/97ZZZX47), Sep 16, 1996: SPRING. WORN. SEAL RING SPRING WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH 2 EACH NEW UNITS, CORRECTED PROBLEM. - [SDR 97ZZZX46](https://openairdocs.org/sdr/97ZZZX46), Sep 16, 1996: SEAL RING. WORN. SEAL RING WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH 2 EACH NEW UNITS, CORRECTED PROBLEM. - [SDR 97ZZZX45](https://openairdocs.org/sdr/97ZZZX45), Sep 16, 1996: SEAL. LEAKING. SEAL LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 97ZZZX61](https://openairdocs.org/sdr/97ZZZX61), Aug 16, 1996: SEAL. LEAKING. CSD LIP SEAL LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 97ZZZX60](https://openairdocs.org/sdr/97ZZZX60), Aug 16, 1996: SEAL RING. WORN. SEAL RING WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH 2 EACH UNIT UNITS, CORRECTED PROBLEM. - [SDR 97ZZZX59](https://openairdocs.org/sdr/97ZZZX59), Aug 16, 1996: SPRING. WORN. SEAL RING SPRING WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH 2 EACH NEW UNITS, CORRECTED PROBLEM. - [SDR 97ZZZX58](https://openairdocs.org/sdr/97ZZZX58), Aug 16, 1996: SEAL. LEAKING. SEAL LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 97ZZZX57](https://openairdocs.org/sdr/97ZZZX57), Aug 16, 1996: SEAL. LEAKING. SEAL LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 97ZZZX56](https://openairdocs.org/sdr/97ZZZX56), Aug 16, 1996: SEAL. LEAKING. SEALS LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH 3 EACH NEW UNITS, CORRECTED PROBLEM. - [SDR 97ZZZX55](https://openairdocs.org/sdr/97ZZZX55), Aug 16, 1996: SEAL. LEAKING. SEAL LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 97ZZZX54](https://openairdocs.org/sdr/97ZZZX54), Aug 16, 1996: BEARING. DEFECTIVE. REMOVED DEFECTIVE NR 2 BEARING TO C/W SB LT101-72-10-0151. REPLACEMENT PART FROM KIT PN T054K21717. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 97ZZZX53](https://openairdocs.org/sdr/97ZZZX53), Jul 18, 1996: SEAL. LEAKING. CSD LIP SEAL LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 97ZZZX52](https://openairdocs.org/sdr/97ZZZX52), Jul 18, 1996: SEAL. LEAKING. SEAL LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 97ZZZX44](https://openairdocs.org/sdr/97ZZZX44), Jul 18, 1996: SEAL. LEAKING. SEAL LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 97ZZZX43](https://openairdocs.org/sdr/97ZZZX43), Jul 18, 1996: SEAL. LEAKING. SEALS LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW 3 EACH UNITS, CORRECTED PROBLEM. - [SDR 97ZZZX42](https://openairdocs.org/sdr/97ZZZX42), Jul 18, 1996: SEAL. LEAKING. SEALS LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH 3 EACH NEW UNITS, CORRECTED PROBLEM. - [SDR 96ZZZX5664](https://openairdocs.org/sdr/96ZZZX5664), Jul 18, 1996: BEARING. WORN. BEARING WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH 2 EACH NEW UNITS, CORRECTED PROBLEM. - [SDR 96ZZZX5663](https://openairdocs.org/sdr/96ZZZX5663), May 17, 1996: PIN. WORN. BLADE PIN WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 96ZZZX5662](https://openairdocs.org/sdr/96ZZZX5662), May 17, 1996: PIN. WORN. BLADE PIN WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 96ZZZX5661](https://openairdocs.org/sdr/96ZZZX5661), May 17, 1996: PIN. WORN. BLADE PIN WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 96ZZZX5660](https://openairdocs.org/sdr/96ZZZX5660), May 17, 1996: PIN. WORN. BLADE PIN WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 96ZZZX1602](https://openairdocs.org/sdr/96ZZZX1602), Dec 5, 1995: BEARING. WORN. BEARING WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH 2 EACH NEW UNITS, CORRECTED PROBLEM. - [SDR 96ZZZX1601](https://openairdocs.org/sdr/96ZZZX1601), Dec 4, 1995: BOLT. WORN. BOLT WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 96ZZZX1585](https://openairdocs.org/sdr/96ZZZX1585), Nov 6, 1995: ROTOR ASSY. DEFECTIVE. DUE SB LT101-72-10-0150. REQUIRES DISASSEMBLY AND INSPECTION OF THE ROTOR BROACH SLOTS FOR POSSIBLE CRACKS IN THE DISC/TENON AREA. REPLACED WITH NEW UNIT, CORRE - [SDR 96ZZZX499](https://openairdocs.org/sdr/96ZZZX499), Oct 23, 1995: COMPUTER. INOPERATIVE. COMPUTER UNIT INOPERATIVE ON INSTALL. WILL NOT COME ON-LINE. REPLACED WITH NEW UNIT. CORRECTED PROBLEM. - [SDR 96ZZZX1572](https://openairdocs.org/sdr/96ZZZX1572), Oct 18, 1995: ROTOR ASSY. CRACKS. DUE SB LT101-72-10-0150. REQUIRES DISASSEMBLY AND INSPECTION OF THE ROTOR BROACH SLOTS FOR POSSIBLE CRACKS IN THE DISC/TENON AREA. REPLACED WTIH NEW UNIT, CORRE - [SDR 96ZZZX1600](https://openairdocs.org/sdr/96ZZZX1600), Sep 25, 1995: CATCHER. WORN. LEFT CATCHER WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 95ZZZX5551](https://openairdocs.org/sdr/95ZZZX5551), Jul 13, 1995: SEAL. LEAKING. ACCESSORY SEAL LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT(S) CORRECTED PROBLEM. - [SDR 95ZZZX5550](https://openairdocs.org/sdr/95ZZZX5550), Jul 13, 1995: SEAL. LEAKING. CSD LIP SEAL LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT(S) CORRECTED PROBLEM. - [SDR 95ZZZX5549](https://openairdocs.org/sdr/95ZZZX5549), Jul 13, 1995: SEAL. LEAKING. ALTERNATOR FORWARD SEAL LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT(S) CORRECTED PROBLEM. All 57: https://openairdocs.org/deregistered/N10UM-2013-06-05/reports.md ## 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 20060827018129I](https://openairdocs.org/incident/20060827018129I), Aug 27, 2006: Bolkms BK117B1 (N10UM), Ashland, MO, Minor damage. (-23) N10UM, an air ambulance helicopter had made a night off-airport landing at 0300 am to pick up a patient. On departure, the pilot climbed through 2 unseen… --- 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.