# N7170D: 1990 Messerschmitt-Boelkow-Blohm BO-105S, registration cancelled 2008-12-04 - Type: Cancelled registration (FAA registry, deregistered aircraft) - Cancelled: December 4, 2008 - Exported to: Pakistan - 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-840 - Year built: 1990 - Type of aircraft: Rotorcraft - Engine type: Turbo-prop - Airworthiness: Standard, normal - Airworthiness date: September 5, 1990 - Certificate issued: July 23, 2008 - Last registry action: July 23, 2008 - Mode S code: A9986A - Owner when cancelled: [Wilmington Trust Co](https://openairdocs.org/faa-owner/WILMINGTON%20TRUST%20CO) - Location: [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington) - Owner type: Corporation - Owner's area on the map: 39.7357° N, 75.5321° W: Placed by OpenAirDocs: center of Wilmington, DE, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based - The mark today: https://openairdocs.org/aircraft/N7170D - FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=7170D - Page: https://openairdocs.org/deregistered/N7170D-2008-12-04 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 (52, newest 50) Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. - [SDR HEEA114631](https://openairdocs.org/sdr/HEEA114631), Mar 21, 2007: SENSOR. MALFUNCTIONED. AFTER SIX MINUTES OF FLIGHT, #2 ENGINE OIL TEMP PEGGED AT MAXIMUM. REDUCED POWER ON #2 TO IDLE. AFTER ONE MINUTE TEMP DROPPED TO HIGH GREEN. LEFT ENGINE RUNNING - [SDR HEEA086711](https://openairdocs.org/sdr/HEEA086711), May 21, 2003: BEARING. WORN. CONTROL ROD HAS WORN BEARINGS. REPLACED 1 EACH 116488P BEARINGS DUE TO WORN; 1 EACH 11-3943P BEARINGS DUE TO WORN. REPAIRED. - [SDR HEEA086710](https://openairdocs.org/sdr/HEEA086710), May 21, 2003: BEARING. WORN. CONTROL ROD HAS WORN BEARINGS. REPLACED 2 EACH 11-6488P BEARINGS DUE TO WORN; 2 EACH 11-3943P BEARINGS DUE TO WORN. REPAIRED. - [SDR HEEA088626](https://openairdocs.org/sdr/HEEA088626), Mar 10, 2003: BATTERY. WEAK. MASTER BATTERY WEAK. REPAIRED. - [SDR HEEA085077](https://openairdocs.org/sdr/HEEA085077), Feb 28, 2003: BEARING. WORN. TAIL ROTOR DRIVESHAFT HAS A WORN BEARING. REPAIRED. - [SDR HEEA084655](https://openairdocs.org/sdr/HEEA084655), Feb 12, 2003: SHAFT. WORN. TAIL ROTOR SHAFT HAS WORN PLATING. REPAIRED. - [SDR HEEA084652](https://openairdocs.org/sdr/HEEA084652), Feb 12, 2003: BEARING. WORN. TAIL ROTOR BELLCRANK HAS WORN BEARINGS. REPLACED BEARING 2828P AND EN2015BN06E DUE TO WORN. REPAIRED. - [SDR HEEA083486](https://openairdocs.org/sdr/HEEA083486), Jan 7, 2003: BEARING. WORN. TAIL ROTOR PITCH LINK BEARINGS WORN. REPLACED BEARINGS (2 EA) 113943P AND (2 EA) 116488P. - [SDR HEEA082677](https://openairdocs.org/sdr/HEEA082677), Dec 11, 2002: INDICATOR. MALFUNCTIONED. INDICATOR SHOWING NR 1 NG TORQUE FLUCTUATIONS. - [SDR HEEA082676](https://openairdocs.org/sdr/HEEA082676), Dec 11, 2002: HOSE. LEAKING. FUEL HOSE LEAKING. REPLACED WITH SERVICEABLE HOSE. - [SDR HEEA082673](https://openairdocs.org/sdr/HEEA082673), Dec 11, 2002: GYRO. INOPERATIVE. HORIZON GYRO INOPERATIVE. REPAIRED. - [SDR HEEA082671](https://openairdocs.org/sdr/HEEA082671), Dec 11, 2002: TRANSMISSION. MAKING METAL. TRANSMISSION MAKING METAL. REPAIRED. - [SDR HEEA082668](https://openairdocs.org/sdr/HEEA082668), Dec 11, 2002: CLAMP. CRACKED. EXHAUST PIPE CLAMP CRACKED. SCRAPPED. - [SDR HEEA082657](https://openairdocs.org/sdr/HEEA082657), Dec 11, 2002: BLADE. CHIPPED. TAIL ROTOR BLADE HAS PAINT CHIPPED. - [SDR HEEA082656](https://openairdocs.org/sdr/HEEA082656), Dec 11, 2002: BLADE. CHIPPED. TAIL ROTOR BLADE HAS PAINT CHIPPED. - [SDR HEEA0016737](https://openairdocs.org/sdr/HEEA0016737), Nov 6, 1998: TRANSMITTER. OUT OF TOLERANCE. FUEL PRESSURE TRANSMITTER LOW OUT OF TOLERANCE - [SDR HEEA0016699](https://openairdocs.org/sdr/HEEA0016699), Nov 6, 1998: BATTERY. MISMANUFACTURED. INSTALLED BATTERY IN AIRCRAFT. WHEN BATTERY SWITCH TURNED ON BOTH BATTERY HOT LIGHTS CAME ON. REPLACED WITH SERVICEABLE BATTERY. - [SDR HEEA0015269](https://openairdocs.org/sdr/HEEA0015269), Jul 27, 1998: SERVO MOTOR. FAILED. ACTUATOR WOULD NOT BEEP. FOUND WIRE WORN THROUGH AT BODY. - [SDR HEEA0015240](https://openairdocs.org/sdr/HEEA0015240), Jul 27, 1998: SERVO MOTOR. MALFUNCTIONED. NR STARTED TO DROOP AFTER TAKEOFF AND WOULD NOT BEEP UP. - [SDR HEEA0011902](https://openairdocs.org/sdr/HEEA0011902), Nov 10, 1997: INDICATOR. FAILED. INDICATOR WAS REMOVED FROM BOWL AND CLEANED. INSTALLED INDICATOR BACK ON BOWL, TESTED AND INDICATOR STILL DID NOT WORK. SCRAPPED INDICATOR AND REPLACED WITH SER - [SDR HEEA0011207](https://openairdocs.org/sdr/HEEA0011207), Oct 6, 1997: TRANSPONDER. INOPERATIVE. TRANSPONDER INOPERATIVE. PERFORMED PRELINARY INSPECTION. REPLACED RESISTOR R441, RESISTOR R447, TRANSISTOR Q415, DIODE CR404, DIODE CR407 AND RESISTOR R429. REP - [SDR HEEA0010270](https://openairdocs.org/sdr/HEEA0010270), Jun 25, 1997: TRANSCEIVER. FAILED. NO SIGNAL OUTPUT. REPLACED DEFECTIVE V101 CAVITY OSCILLATOR. ADJUSTED POWER OUT AND FREQUENCY AS NEEDED. INSPECTED AND BENCH CHECK GOOD. - [SDR HAIHEEA9624](https://openairdocs.org/sdr/HAIHEEA9624), Apr 28, 1997: NOZZLE SHIELD. CRACKED. ENGINE REMOVED DUE TO F.O.D. UPON INSPECTION OF TURBINE PARTS NOTED: CRACKED BEYOND SERVICEABLE LIMITS ON #1 NOZZLE SHIELD DOME AS MARKED. INSTALLED A STANDARD - [SDR HAIHEEA9326](https://openairdocs.org/sdr/HAIHEEA9326), Apr 15, 1997: TRANSCEIVER. FAILED. DOES NOT REPORT PER TOWER. PERFORMED PRELIMINARY INSPECTION. FOUND RECEIVED WEAK, SWAPPED MICRO-PROCESSOR AND MIXER DIODE. NO HELP. TROUBLESHOT FURTHER, FOUND P - [SDR HEEA968579](https://openairdocs.org/sdr/HEEA968579), Nov 25, 1996: THROTTLE ROD. WORN. WORN BEYOND LIMITS. REPLACED WITH SERVICEABLE PART. - [SDR HEEA968578](https://openairdocs.org/sdr/HEEA968578), Nov 25, 1996: EXHAUST CLAMP. CORRODED. T-BOLT HAVE CORROSION PITS, CHAFED T-BOLTS AND CRACKS. REPLACED WITH SERVICEABLE PART. - [SDR HEEA968577](https://openairdocs.org/sdr/HEEA968577), Nov 25, 1996: HSD COLLAR. CHAFED. EXHAUST STACK CLAMP CHAFED THROUGH INNER RING. REPLACED INNER RING WITH SERVICEABLE ONE AND MAKE SURE EXHAUST STACK CLAMP DOES NOT CHAFE. - [SDR HEEA968574](https://openairdocs.org/sdr/HEEA968574), Nov 25, 1996: TELEFLEX CABLE. WORN. CABLE WORN BEYOND LIMITS. REPLACED WITH NEW TELEFLEX CABLE. - [SDR HEEA968573](https://openairdocs.org/sdr/HEEA968573), Nov 25, 1996: TELEFLEX CABLE. WORN. CABLE WORN BEYOND LIMITS. REPLACED WITH NEW TELEFLEX CABLE. - [SDR HEEA968569](https://openairdocs.org/sdr/HEEA968569), Nov 25, 1996: BOLT. SCORED. SCORING ON SHANK. REPLACED WITH SERVICEABLE BOLT. - [SDR HEEA968568](https://openairdocs.org/sdr/HEEA968568), Nov 25, 1996: ROD END ASSY. CORRODED. CORROSION PITS ON ROD ENDS. REPLACED WITH SERVICEABLE ROD ENDS. - [SDR HEEA968567](https://openairdocs.org/sdr/HEEA968567), Nov 25, 1996: RUBBER RING. DETERIORATED. RUBBER DETERIORATED AND CRACKING. REPLACED WITH NEW RUBBER RINGS. - [SDR HEEA968543](https://openairdocs.org/sdr/HEEA968543), Nov 22, 1996: CONTROL ROD. CORRODED. CORROSION BEYOND LIMITS ON COLLARS AND ON INTERIOR OF COLLARS. REPLACED WITH SERVICEABLE CONTROL TUBE. - [SDR HEEA968542](https://openairdocs.org/sdr/HEEA968542), Nov 22, 1996: CROSS TUBE ASSY. CORROSION. CORROSION PITS BEYOND LIMITS WHERE SKID SHOE MOUNTS. REPLACED WITH SERVICEABLE CROSSTUBE. - [SDR HEEA968457](https://openairdocs.org/sdr/HEEA968457), Nov 6, 1996: SKID SHOE. WORN. SKID PROTECTIVE PLATES WORN THROUGH HARDENED METAL TO AND THROUGH BASE METAL. REPLACED WITH SERVICEABLE SKID PROTECTIVE PLATES. - [SDR HEEA968344](https://openairdocs.org/sdr/HEEA968344), Oct 14, 1996: INDICATOR. DEFECTIVE. INDICATOR NOT LINEAR ERRATIC AND EXCESSIVE FRICTION ERROR. - [SDR HEEA968339](https://openairdocs.org/sdr/HEEA968339), Oct 14, 1996: INDICATOR. READS HIGH. LOW END READS HIGH AND HIGH END READS LOW. - [SDR HEEA968318](https://openairdocs.org/sdr/HEEA968318), Oct 14, 1996: OIL COOLER. CRACKED. COOLER CRACKED AT TOP. ELONGATED MOUNTING HOLES AND CORROSION. - [SDR HEEA968317](https://openairdocs.org/sdr/HEEA968317), Oct 14, 1996: COOLER. CRACKED. OIL COOLER CRACKED IN NUMEROUS LOCATIONS. SENT TO DRAKE AIR FOR INSPECTION AND REPAIR. - [SDR HEEA968268](https://openairdocs.org/sdr/HEEA968268), Oct 14, 1996: ALTIMETER. ERROR. NEEDLE OFF 1500 FEET.TIME SINCE REPAIR 325:30. - [SDR HEEA968051](https://openairdocs.org/sdr/HEEA968051), Oct 3, 1996: BLADE. CRACKED. BLADE IS CRACKED. (NOSE AND NECK SHELLS CRACKED) - [SDR HEEA967757](https://openairdocs.org/sdr/HEEA967757), Sep 3, 1996: CLUTCH. CAGE WORN. INNER CAGE WORN. REPLACED WITH SERVICEABLE CLUTCH. SEE MMIR # HEEA0007756 FOR OTHER CLUTCH REMOVED. - [SDR HEEA967756](https://openairdocs.org/sdr/HEEA967756), Sep 3, 1996: CLUTCH. CAGE WORN. INNER CAGE WORN AND ENERGIZING RIBBON WORN. REPLACED WITH SERVICEABLE CLUTCH. SEE MMIR # HEEA0007757 FOR OTHER CLUTCH REMOVED. - [SDR HEEA967607](https://openairdocs.org/sdr/HEEA967607), Jul 31, 1996: TRANSCEIVER. WEAK. TRANSPONDER WEAK. FOUND FREQUENCY FALLS OFF LINE WHEN VIBRATED. REPLACED CAVITY OSCILLATOR V101. REPAIRED, COOKED UNIT UNDER HEAT LAMP, VIBRATED AND PUT IN FREE - [SDR HEEA967505](https://openairdocs.org/sdr/HEEA967505), Jul 5, 1996: INDICATOR. FRICTION ERROR. EXCESSIVE FRICTION ERROR. - [SDR HEEA967412](https://openairdocs.org/sdr/HEEA967412), Jun 12, 1996: BLADE. CRACKED. THE NOSE SHELL CRACKED AND SEPARATED. - [SDR HEEA967411](https://openairdocs.org/sdr/HEEA967411), Jun 12, 1996: BLADE. CRACKED. CRACKS IN THE NOSE SHELL NEAR THE CUFF AREA. - [SDR HEEA967324](https://openairdocs.org/sdr/HEEA967324), Jun 4, 1996: ALTIMETER. DEFECTIVE. ENCODER IS OFF 80 FEET AT 5000 FEET AND NEEDLE HAS STICKY INDICATION. - [SDR HEEA966884](https://openairdocs.org/sdr/HEEA966884), Mar 22, 1996: INDICATOR. FLUCTUATES. AFTER ONE HOUR OF USE #2 NEEDLE STARTED TO FLUCTUATE. - [SDR HEEA966335](https://openairdocs.org/sdr/HEEA966335), Jan 2, 1996: TORQUEMETER. LEAKING. ENGINE REMOVED DUE TO TORQUE METER LEAKING. All 52: https://openairdocs.org/deregistered/N7170D-2008-12-04/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 20001114040589I](https://openairdocs.org/incident/20001114040589I), Nov 14, 2000: Bolkms BO105S (N7170D), Intracoastal Ci, LA, Substantial damage. (-23) During cruise flight, the r/h fwd window and lower track assembly on the pilot's door came off, struck and caused damage to the main rotor blade. ## Other aircraft with N7170D - [Cancelled 1965-05-20](https://openairdocs.org/deregistered/N7170D-1965-05-20): Piper PA-18, S/N 18-5628. Owner: [United Flying Service Inc](https://openairdocs.org/faa-owner/UNITED%20FLYING%20SERVICE%20INC), [Baltimore, MD](https://openairdocs.org/faa-place/MD/Baltimore) --- 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.