# N3520T: Messerschmitt-Boelkow-Blohm BO-105S, registration cancelled 2017-03-06 - Type: Cancelled registration (FAA registry, deregistered aircraft) - Cancelled: March 6, 2017 - Status when cancelled: Registration expired, pending cancellation - Airframe: [Messerschmitt-Boelkow-Blohm BO-105S](https://openairdocs.org/model/messerschmitt-boelkow-blohm-bo-105s) (registry code 5626006) - Data sheets: [TCDS H3EU](https://openairdocs.org/tcds/H3EU) (OpenAirDocs) - Serial number: S-539 - Type of aircraft: Rotorcraft - Certificate issued: April 28, 2008 - Last registry action: April 28, 2008 - Mode S code: A3EEA5 - Owner when cancelled: [Eal Leasing Inc](https://openairdocs.org/faa-owner/EAL%20LEASING%20INC) - Location: [North Bend, OR](https://openairdocs.org/faa-place/OR/North%20Bend) - Owner type: Corporation - Owner's area on the map: 43.4842° N, 124.1827° W: Placed by OpenAirDocs at the center of ZIP code 97459, within about 6 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based - The mark today: https://openairdocs.org/aircraft/N3520T - FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=3520T - Page: https://openairdocs.org/deregistered/N3520T-2017-03-06 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 (34) Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. - [SDR HEEA065147](https://openairdocs.org/sdr/HEEA065147), Nov 15, 1999: TRANSMISSION. MAKING METAL. FOUND METAL IN TRANSMISSION. - [SDR HEEA065076](https://openairdocs.org/sdr/HEEA065076), Nov 11, 1999: PUMP. LEAKING. HYDRAULIC PUMP LEAKING. - [SDR HEEA065066](https://openairdocs.org/sdr/HEEA065066), Nov 11, 1999: WARNING BOX. FAILED. NO FLASHING LIGHT. RPM WARNING LIGHT DOES NOT COME ON. - [SDR HEEA064920](https://openairdocs.org/sdr/HEEA064920), Nov 1, 1999: CARBON SEAL. LEAKING. ASSEMBLY INSPECTION REVEALED CARBON SEAL LEAKED ON PRESSURE TEST. - [SDR HEEA060461](https://openairdocs.org/sdr/HEEA060461), Jan 25, 1999: POWER SUPPLY. FAILED. NO TRANSMIT LIGHT ON ROLL VHF WHEN KEYED. - [SDR HEEA0016730](https://openairdocs.org/sdr/HEEA0016730), Nov 6, 1998: POWER SUPPLY. FAILED. NO TRANSMIT LIGHT ON ROL VHF WHEN KEYED. - [SDR HEEA0016664](https://openairdocs.org/sdr/HEEA0016664), Nov 5, 1998: TRANSMITTER. MALFUNCTIONED. TORQUE TRANSMISSION ERRATIC OPERATION AT INDICATOR IN-FLIGHT. - [SDR HEEA0016663](https://openairdocs.org/sdr/HEEA0016663), Nov 5, 1998: INDICATOR. MALFUNCTIONED. MAST MOMENT INDICATION HAS ERRATIC OPERATION AT INDICATOR IN-FLIGHT. - [SDR HEEA0016649](https://openairdocs.org/sdr/HEEA0016649), Nov 5, 1998: GRIP BEARING. WORN. TAIL ROTOR ASSEMBLY'S GRIP BEARING WORN. - [SDR HEEA0015723](https://openairdocs.org/sdr/HEEA0015723), Aug 20, 1998: AMMETER. DAMAGED. AMMETER HAS INSULATOR CRACKED AND NEEDLE IS ERRATIC. - [SDR HEEA0015328](https://openairdocs.org/sdr/HEEA0015328), Jul 29, 1998: TRANSMITTER. INACCURATE. TORQUE TRANSMITTER GIVES ERRONEOUS READINGS. - [SDR HEEA0015327](https://openairdocs.org/sdr/HEEA0015327), Jul 29, 1998: INDICATOR. INACCURATE. MAST MOMENT INDICATOR GIVES ERRONEOUS READINGS. - [SDR HEEA0014877](https://openairdocs.org/sdr/HEEA0014877), Jun 22, 1998: TRANSCEIVER. MALFUNCTIONED. NR 2 VHF POSITION TRANSMITS; WILL NOT RECEIVE. - [SDR HEEA0014532](https://openairdocs.org/sdr/HEEA0014532), Jun 4, 1998: CARTRIDGE. LOW PRESSURE. BOOST PUMP HAS LOW PRESSURE. - [SDR HEEA0014531](https://openairdocs.org/sdr/HEEA0014531), Jun 4, 1998: CARTRIDGE. MALFUNCTIONED. BOOST PUMP DRAWING EXCESSIVE AMPERAGE. - [SDR HEEA0014529](https://openairdocs.org/sdr/HEEA0014529), Jun 4, 1998: CARTRIDGE. MALFUNCTIONED. BOOST PUMP DRAWING EXCESSIVE AMPERAGE. - [SDR HEEA0014486](https://openairdocs.org/sdr/HEEA0014486), Jun 2, 1998: TRANSMITTER. ERRATIC. MAST MOMENT TRANSMITTER, ERRATIC OPERATION. - [SDR HEEA0014485](https://openairdocs.org/sdr/HEEA0014485), Jun 2, 1998: INDICATOR. ERRATIC. MAST MOMENT INDICATOR HAS ERRATIC OPERATION. - [SDR HEEA0014030](https://openairdocs.org/sdr/HEEA0014030), Apr 22, 1998: WARNING BOX. FAILED. INTERMITTENT LIGHT AND AUDIO AT 100% RPM. - [SDR HEEA0013568](https://openairdocs.org/sdr/HEEA0013568), Mar 26, 1998: ALTIMETER. MALFUNCTION. EXCESSIVE FRICTION ERROR AND ENCODER READS LOW. - [SDR HEEA0013532](https://openairdocs.org/sdr/HEEA0013532), Mar 26, 1998: INDICATOR. FAILED. EXH TEMP INDICATOR EXCESSIVE FRICTION AND CANNOT CALIBRATE. - [SDR HEEA0013018](https://openairdocs.org/sdr/HEEA0013018), Feb 10, 1998: FLOOR COVER. MIS MFG. FORWARD EDGE OF PANEL DOES NOT HAVE REINFORCEMENT STRIP BONDED ON FOR INSTALLATION OF PANEL TO MAIN FLOOR PANEL. - [SDR HEEA0010765](https://openairdocs.org/sdr/HEEA0010765), Aug 19, 1997: TRANSDUCER. FAILED. TRANSDUCER READS HIGH THROUGHOUT SCALE. - [SDR HEEA0010584](https://openairdocs.org/sdr/HEEA0010584), Aug 6, 1997: TANK. DEFECTIVE. SANDED FLANGES AND POSSIBLE WARPED BOOST PUMP FLANGE. SENT TO A/C TEAM, INC. FOR INSPECTION AND REPAIR. - [SDR HEEA0010247](https://openairdocs.org/sdr/HEEA0010247), Jun 25, 1997: INDICATOR. FAILED. TRIPLE TACH IMPROPER READING GAUGE STICKS ON START UP. ALL THREE NEEDLES INOPERATIVE. - [SDR HEEA0010156](https://openairdocs.org/sdr/HEEA0010156), Jun 17, 1997: P.T. SUPPORT. MIS MACHINED. RECEIVING INSPECTION REVEALED: I.D. MACHINED UNDERSIZED ON P.T. SUPPORT #7 BEARING BORE. - [SDR HAIHEEA9739](https://openairdocs.org/sdr/HAIHEEA9739), Apr 30, 1997: UPPER HOUSING. CORROSION. CORROSION IN MOUNTING HOLES BEYOND BUSHING. - [SDR HAIHEEA9738](https://openairdocs.org/sdr/HAIHEEA9738), Apr 30, 1997: CENTER CASE. WORN. CENTER CASE TAIL ROTOR BORE WORN. CHECK INDICATION ON LOWER MOUNTING FLANGE AS MARKED. - [SDR HEEA968730](https://openairdocs.org/sdr/HEEA968730), Dec 13, 1996: TRANSCEIVER. FAILED. TRANSCEIVER WEAK AND BROKEN UP SEVERAL TIMES DURING FLIGHT. - [SDR HEEA968580](https://openairdocs.org/sdr/HEEA968580), Nov 25, 1996: CLAMP. WELD FAILED. CLAMPS HAVE BROKEN SPOT WELDS AND ARE CRACKED. REMOVED PART AND INSTALLED SERVICEABLE PARTS. - [SDR HEEA968437](https://openairdocs.org/sdr/HEEA968437), Nov 6, 1996: BLADE. CRACKED. BLADE NOSE & NECK SHELL CRACKED AND SEPARATED. - [SDR HEEA968436](https://openairdocs.org/sdr/HEEA968436), Nov 6, 1996: BLADE. CRACKED. BLADE NOSE AND NECK SHELL CRACKED AND SEPARATED. - [SDR HEEA968435](https://openairdocs.org/sdr/HEEA968435), Nov 6, 1996: BLADE. CRACKED. BLADE HAS NOSE AND NECK SHELLS CRACKED WITH SEPARATION. SUSPECTED CRACKED FILLER NEAR MOLD LINE ON LOWER SURFACE. - [SDR HEEA968434](https://openairdocs.org/sdr/HEEA968434), Nov 4, 1996: BLADE. CRACKED. BLADE HAS NOSE AND NECK SHELL CRACKED AND SEPARATED. INBOARD LEADING STRIP SEPARATED BEYOND LIMITS. --- 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.