# N117CW: Messerschmitt-Bolkow-Blohm BK 117 A-4, registration cancelled 2012-11-01 - Type: Cancelled registration (FAA registry, deregistered aircraft) - Cancelled: November 1, 2012 - Exported to: Colombia - Status when cancelled: Valid registration - Airframe: [Messerschmitt-Bolkow-Blohm BK 117 A-4](https://openairdocs.org/model/messerschmitt-bolkow-blohm-bk-117-a-4) (registry code 5626017) - Data sheets: [TCDS H13EU](https://openairdocs.org/tcds/H13EU) (OpenAirDocs) - Serial number: 7125 - Type of aircraft: Rotorcraft - Certificate issued: September 22, 2011 - Last registry action: September 22, 2011 - Mode S code: A0467B - Owner when cancelled: [Tactical Helicopters LLC](https://openairdocs.org/faa-owner/TACTICAL%20HELICOPTERS%20LLC) - Location: [Fort Worth, TX](https://openairdocs.org/faa-place/TX/Fort%20Worth) - Owner type: Corporation - Owner's area on the map: 32.8167° N, 97.3597° W: Placed by OpenAirDocs at the center of ZIP code 76106, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based - The mark today: https://openairdocs.org/aircraft/N117CW - FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=117CW - Page: https://openairdocs.org/deregistered/N117CW-2012-11-01 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-Bolkow-Blohm BK 117 A-4: https://openairdocs.org/model/messerschmitt-bolkow-blohm-bk-117-a-4.md ## Service difficulty reports (46) Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. - [SDR QMLA2011011111007](https://openairdocs.org/sdr/QMLA2011011111007), Jan 11, 2011: UNKNOWN. ODOR. FUELED TO MAX, ON LEVEL OFF HAD FUEL ODOR IN AFT CABIN, DIVERTED TO NEARBY AIRPORT. MECHANIC WAS CALLED AND INSPECTED FUEL LINES ON BOTH ENGINES, REMOVED INTERI - [SDR 20000816SH022](https://openairdocs.org/sdr/20000816SH022), Apr 6, 2000: DIFFUSER. MISMANUFACTURED. OUTER DIAMETER OF VANE SUPPORT RING IS TOO LARGE (10.221 INCHES). IMPROPER MANUFACTURE. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. (X) - [SDR 20000816SH021](https://openairdocs.org/sdr/20000816SH021), Apr 6, 2000: SHROUD. BINDING. EXCESSIVE GP BLADE TIP RUB. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. (X) - [SDR 20000510SH014](https://openairdocs.org/sdr/20000510SH014), Oct 15, 1999: SEAL. LEAKING. SEAL LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. (X) - [SDR 20000510SH013](https://openairdocs.org/sdr/20000510SH013), Oct 15, 1999: SEAL. WORN. SEAL RING WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. (X) - [SDR 20000510SH012](https://openairdocs.org/sdr/20000510SH012), Oct 15, 1999: SEAL. LEAKING. SEAL LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. (X) - [SDR 99ZZZX4071](https://openairdocs.org/sdr/99ZZZX4071), Aug 20, 1999: SEAL. LEAKING. SEAL LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 99ZZZX3871](https://openairdocs.org/sdr/99ZZZX3871), Jun 24, 1999: BEARING. WORN. BEARING WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 99ZZZX3806](https://openairdocs.org/sdr/99ZZZX3806), May 14, 1999: SHAFT. GROOVED. SHAFT EXCESSIVELY GROOVED. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 99ZZZX3800](https://openairdocs.org/sdr/99ZZZX3800), May 14, 1999: SEAL RING. WORN. SEAL RING WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 99ZZZX1804](https://openairdocs.org/sdr/99ZZZX1804), Oct 16, 1998: CURL. BURNT. CURL ASSY HAS EXCESSIVE BURN IN SOME AREAS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 99ZZZX893](https://openairdocs.org/sdr/99ZZZX893), Aug 17, 1998: BEARING. WORN. BEARING WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 99ZZZX1686](https://openairdocs.org/sdr/99ZZZX1686), Jun 9, 1998: SEAL. WORN. SEAL WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 99ZZZX1685](https://openairdocs.org/sdr/99ZZZX1685), Jun 9, 1998: SHROUD. DAMAGED. EXCESSIVE GP BLADE TIP RUB. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 97ZZZX4346](https://openairdocs.org/sdr/97ZZZX4346), Jun 12, 1997: ROTOR ASSY. BLADE SHIFT. ROTOR ASSY FAILED SB LT101-72-10-0153. EXCESSIVE IBPT BLADE SHIFT. FAILED Q-ROTOR 7.28 GMIN2. REPLACED WITH USED UNIT, CORRECTED PROBLEM. PART TOTAL CYCLES, 8,2 - [SDR 97ZZZX2143](https://openairdocs.org/sdr/97ZZZX2143), Oct 15, 1996: BEARING. WORN. BEARING WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 97ZZZX2133](https://openairdocs.org/sdr/97ZZZX2133), Oct 15, 1996: BOLT. WORN. FITTED BOLT WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNITS, CORRECTED PROBLEM. - [SDR 97ZZZX2423](https://openairdocs.org/sdr/97ZZZX2423), Oct 12, 1996: SEAL. LEAKING. SEAL LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM - [SDR 97ZZZX2422](https://openairdocs.org/sdr/97ZZZX2422), Oct 12, 1996: SEAL. LEAKING. SEAL LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 97ZZZX2421](https://openairdocs.org/sdr/97ZZZX2421), Oct 12, 1996: SEAL. LEAKING. SEAL LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 97ZZZX2420](https://openairdocs.org/sdr/97ZZZX2420), Oct 12, 1996: SEAL. LEAKING. SEAL LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH 3 EACH NEW UNITS, CORRECTED PROBLEM. - [SDR 97ZZZX931](https://openairdocs.org/sdr/97ZZZX931), Jul 25, 1996: ROTOR ASSY. DEFECTIVE. GAS PRODUCER ROTOR ASSY DUE SB LT101-72-10-0150. REQUIRES DISASSEMBLY AND INSPECTION OF THE ROTOR BROACH SLOTS FOR POSSIBLE CRACKS IN THE DISC/TENON AREA. REPLA - [SDR 97ZZZX2732](https://openairdocs.org/sdr/97ZZZX2732), Jul 25, 1996: SEAL. LEAK. SEAL LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 97ZZZX2731](https://openairdocs.org/sdr/97ZZZX2731), Jul 25, 1996: SEAL. LEAKING. SEAL LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 97ZZZX2730](https://openairdocs.org/sdr/97ZZZX2730), Jul 25, 1996: SEAL. LEAKING. SEAL LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 97ZZZX2728](https://openairdocs.org/sdr/97ZZZX2728), Jul 25, 1996: SEAL. LEAKING. SEAL LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 97ZZZX2726](https://openairdocs.org/sdr/97ZZZX2726), Jul 25, 1996: SPRING. WORN. SEAL RING EXPANDER SPRING WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH 2 EACH NEW UNITS, CORRECTED PROBLEM. - [SDR 97ZZZX2725](https://openairdocs.org/sdr/97ZZZX2725), Jul 25, 1996: SEAL RING. WORN. SEAL RING WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH 2 EACH NEW UNITS, CORRECTED PROBLEM. - [SDR 97ZZZX2729](https://openairdocs.org/sdr/97ZZZX2729), Jul 5, 1996: SEAL. LEAKING. SEAL LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH 3 EACH NEW UNITS, CORRECTED PROBLEM. - [SDR 97ZZZX2727](https://openairdocs.org/sdr/97ZZZX2727), Jul 5, 1996: SEAL. LEAKING. SEAL LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 96ZZZX5668](https://openairdocs.org/sdr/96ZZZX5668), Apr 24, 1996: BEARING. WORN. T/R HEAD BEARING WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH 2 EACH NEW UNITS, CORRECTED PROBLEM. - [SDR 96ZZZX4256](https://openairdocs.org/sdr/96ZZZX4256), Apr 4, 1996: SEAL. LEAKING. SEAL LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH 3 EACH NEW UNITS, CORRECTED PROBLEM. - [SDR 96ZZZX4255](https://openairdocs.org/sdr/96ZZZX4255), Apr 4, 1996: SEAL. LEAKING. SEAL LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNITS, CORRECTED PROBLEM. - [SDR 96ZZZX4254](https://openairdocs.org/sdr/96ZZZX4254), Apr 4, 1996: SEAL RING. WORN. WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH 2 EACH NEW UNITS, CORRECTED PROBLEM. - [SDR 96ZZZX4253](https://openairdocs.org/sdr/96ZZZX4253), Apr 4, 1996: SEAL. LEAKING. SEAL LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 96ZZZX4252](https://openairdocs.org/sdr/96ZZZX4252), Apr 4, 1996: SEAL. LEAKING. SEAL LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 96ZZZX4251](https://openairdocs.org/sdr/96ZZZX4251), Apr 4, 1996: SEAL. LEAKING. SEAL LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 96ZZZX4250](https://openairdocs.org/sdr/96ZZZX4250), Apr 4, 1996: BEARING. PITTED. BEARING HAS EXCESSIVE PITTING. REPLACED WITH 2 EACH NEW UNITS, CORRECTED PROBLEM. - [SDR 96ZZZX4249](https://openairdocs.org/sdr/96ZZZX4249), Apr 4, 1996: ROTOR. BLADE SHIFT. ROTOR ASSY FAILED SB LT101-72-10-0153. EXCESSIVE IBPT BLADE SHIFT NR 22 -0.013 INCH. REPLACED WITH USED UNIT, CORRECTED PROBLEM. PART TOTAL CYCLES, 2,462.7. - [SDR 96ZZZX3578](https://openairdocs.org/sdr/96ZZZX3578), Nov 8, 1995: BLADE PIN. WORN. BLADE PIN WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 96ZZZX1659](https://openairdocs.org/sdr/96ZZZX1659), Nov 8, 1995: BOLT. WORN. BOLT WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 96ZZZX1658](https://openairdocs.org/sdr/96ZZZX1658), Nov 8, 1995: BOLT. WORN. BOLT WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM. - [SDR 95ZZZX5370](https://openairdocs.org/sdr/95ZZZX5370), Jul 24, 1995: ROTOR ASSY. BLADE SHIFT. FAILED SB LT101-72-10-0153. EXCESSIVE IBPT BLADE SHIFT NR 10, MINUS 0.0105 INCH, NR 14, MINUS 0.0105 INCH. PART TOTAL CYCLES, 3533.5. - [SDR 95ZZZX5286](https://openairdocs.org/sdr/95ZZZX5286), May 30, 1995: BEARING. WORN. BEARING WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH 2 EACH NEW UNIT(S) CORRECTED PROBLEM. - [SDR 95ZZZY0961](https://openairdocs.org/sdr/95ZZZY0961), May 10, 1995: BEARING. WORN. BEARING WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT(S), CORRECTED PROBLEM. - [SDR 95ZZZY0960](https://openairdocs.org/sdr/95ZZZY0960), May 10, 1995: BUSHING. WORN. ELASTOMERICS WORN BEYOND SERVICEABLE LIMITS. UNITS SCRAPPED ON SITE. SEE LOG BOOK ENTRY ATTACHED. REPLACED WITH NEW UNIT(S), CORRECTED PROBLEM. ## 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 19920617026369I](https://openairdocs.org/incident/19920617026369I), Jun 17, 1992: Bolkms BK117A4 (N117CW), Des Moines, IA. Low oil pressure NR1 engine. Secured engine. Precautionary landing at international airport. --- 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.