# N9190Y: 1987 Messerschmitt BO 105CB

- Status: Valid registration
- Airframe: [Messerschmitt BO 105CB](https://openairdocs.org/model/messerschmitt-bo-105cb) (registry code 5626019, 5 seats)
- Engine: [Amateur-built UNKNOWN ENG](https://openairdocs.org/engine/amateur-built-unknown-eng) (registry code 99999)
- Serial number: S-669
- Year built: 1987
- Type: Rotorcraft
- Engine type: Turbo-shaft
- Airworthiness: Standard, normal
- Airworthiness date: September 23, 1987
- Certificate issued: March 18, 2014
- Expires: March 31, 2027
- Mode S code: ACBA89
- Registered owner: [San Juan Aviation LLC](https://openairdocs.org/faa-owner/SAN%20JUAN%20AVIATION%20LLC)
- Location: [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington)
- Owner type: LLC
- Owner's area on the map: 39.7236° N, 75.5412° W: Placed by OpenAirDocs at the center of ZIP code 19801, within about a mile (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=9190Y
- Page: https://openairdocs.org/aircraft/N9190Y

From the FAA registry file of October 24, 2026. ADs below are matched by the registry's airframe and engine model codes. They may apply; each AD's applicability can narrow it by serial number, part number or installed equipment. This is not a compliance determination.

## ADs that may apply (OpenAirDocs): 0 in force

### Matched by airframe (Messerschmitt BO 105CB)

None in force.

### Matched by engine (Amateur-built UNKNOWN ENG)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N9190Y.

## FAA accident and incident reports

None matched to N9190Y.

## Service difficulty reports (34)

As reported by operators and repair stations. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

- [SDR HEEA084650](https://openairdocs.org/sdr/HEEA084650), Feb 12, 2003: RETAINER. CORRODED. INTERGRANULAR CORROSION ON GRIP SEAL RETAINER. REPAIRED.
- [SDR HEEA065137](https://openairdocs.org/sdr/HEEA065137), Nov 15, 1999: INDICATOR. MALFUNCTIONED. MAST MOMENT INDICATOR UNRELIABLE.
- [SDR HEEA061812](https://openairdocs.org/sdr/HEEA061812), Apr 8, 1999: REGULATOR. FAILED. UNABLE TO ADJUST VOLTAGE ON VOLTAGE REGULATOR.
- [SDR HEEA0016759](https://openairdocs.org/sdr/HEEA0016759), Nov 6, 1998: INDICATOR. FAILED. FUEL LEVEL GAUGE SUPPLY SIDE INDICATION OFF.
- [SDR HEEA0016685](https://openairdocs.org/sdr/HEEA0016685), Nov 5, 1998: WARNING BOX. MALFUNCTIONED. RPM WARNING LIGHT COMES ON IN FLIGHT CRUISE WITH NO AUDIO.
- [SDR HEEA0016643](https://openairdocs.org/sdr/HEEA0016643), Nov 5, 1998: TRANSPONDER. FAILED. TRANSPONDER WILL NOT TRANSMIT.
- [SDR HEEA0014606](https://openairdocs.org/sdr/HEEA0014606), Jun 5, 1998: INDICATOR. FAULTY. TOT INDICATOR HAS EXCESSIVE FRICTION ERROR. TIME SINCE REPAIR 24:00 HOURS.
- [SDR HEEA0013646](https://openairdocs.org/sdr/HEEA0013646), Mar 26, 1998: INDICATOR. DEFECTIVE. EXH TEMP INDICATOR NON LINEAR THROUGHOUT SCALE.
- [SDR HEEA0013506](https://openairdocs.org/sdr/HEEA0013506), Mar 19, 1998: BLADE. CRACKED. M/R BLADE NOSE AND NECK SHELL CRACKED AND SEPARATED.
- [SDR HEEA0013505](https://openairdocs.org/sdr/HEEA0013505), Mar 19, 1998: BLADE. CRACKED. M/R BLADE NOSE AND NECK SHELL CRACKED AND SEPARATED.
- [SDR HEEA0012511](https://openairdocs.org/sdr/HEEA0012511), Jan 6, 1998: VALVE. FAILED. OIL SYS VALVE WILL NOT OPEN.
- [SDR HEEA0012092](https://openairdocs.org/sdr/HEEA0012092), Nov 19, 1997: PIPE. STRIPPED. CONNECTING PIPE CORRODED AND STRIPPED OUT.
- [SDR HEEA0012046](https://openairdocs.org/sdr/HEEA0012046), Nov 19, 1997: INDICATOR. FAILED. MAST MOMENT INDICATOR BLOWS FUSES.
- [SDR HEEA0012045](https://openairdocs.org/sdr/HEEA0012045), Nov 19, 1997: TRANSMITTER. FAILED. TORQUE TRANSMITTER BLOWS FUSES.
- [SDR HEEA0010052](https://openairdocs.org/sdr/HEEA0010052), Jun 5, 1997: ELT. MALFUNCTION. ELT WOULD NOT SHUT OFF.
- [SDR HAIHEEA9690](https://openairdocs.org/sdr/HAIHEEA9690), Apr 30, 1997: WARNING BOX. MALFUNCTION. IN FLIGHT AT 100% N2 RPM WARNING LIGHT FLASHES CONTINUALLY.
- [SDR HAIHEEA9574](https://openairdocs.org/sdr/HAIHEEA9574), Apr 24, 1997: ELT. MALFUNCTION. ELT ACTIVATES WHEN RADIO IS KEYED ON 123.05. TIME SINCE REPAIR 7:20.
- [SDR HAIHEEA9565](https://openairdocs.org/sdr/HAIHEEA9565), Apr 24, 1997: ELT. MALFUNCTION. ELT ACTIVATES EVERY TIME MIKE IS KEYED.
- [SDR HAIHEEA9563](https://openairdocs.org/sdr/HAIHEEA9563), Apr 24, 1997: ELT. MALFUNCTION. ELT TRANSMITS IN OFF POSITION. INTERNAL BATTERY DISCONNECTED.
- [SDR HEEA978901](https://openairdocs.org/sdr/HEEA978901), Jan 20, 1997: NOZZLE VANE. CRACKED. NOZZLE CRACKED. ENGINE REMOVED DUE TO LOW POWER AND TURBINE CYCLES. UPON INSPECTION OF TURBINE PARTS NOTED: CRACKED AND BOWED BEYOND SERVICEABLE LIMITS ON NR 1 
- [SDR HEEA968649](https://openairdocs.org/sdr/HEEA968649), Dec 10, 1996: NOZZLE. OUT OF LIMITS. TURBINE REMOVED DUE TO 1750 HOUR INSPECTION. UPON INSPECTION OF TURBINE PARTS NOTED: GROOVED AND EXCESSIVE RUNOUT BEYOND SERVICEABLE LIMITS ON #4 NOZZLE 3RD STA
- [SDR HEEA968477](https://openairdocs.org/sdr/HEEA968477), Nov 13, 1996: COUPLING. FAILED INSP. TURBINE REMOVED DUE TO 1750 HOUR INSPECTION DUE. UPON INSPECTION OF TURBINE PARTS NOTED THE FOLLOWING: FAILED NO-GO GUAGE INSPECTION ON N1 COUPLING INTERNAL SPL
- [SDR HEEA968459](https://openairdocs.org/sdr/HEEA968459), Nov 6, 1996: VALVE. DEFECTIVE. INTERMITTENT OPERATION. INSPECTED BY ACCESSORY OVERHAUL SHOP AND FOUND VALVE TO BE INOPERATIVE.
- [SDR HEEA968416](https://openairdocs.org/sdr/HEEA968416), Nov 4, 1996: TRANSCEIVER. DEFECTIVE. TOWER REPORTED INTERMITTENT OPERATION. FOUND POWER OUT LOW, PERFORMED PRELIMINARY INSPECTION. FOUND FUSE F401 BLOWS WHEN UNIT IS TURNED ON. REPLACED V101 CAVITY
- [SDR HEEA968327](https://openairdocs.org/sdr/HEEA968327), Oct 14, 1996: INDICATOR. READS HIGH. READS HIGH AND EXCESSIVE FRICTION ERROR.
- [SDR HEEA968288](https://openairdocs.org/sdr/HEEA968288), Oct 14, 1996: TRANSMITTER. FAILED. STICKS AT BOTTOM OF PROBE AND FLANGE WARPED. SENT TO FIVE STAR TECHNOLOGIES, INC. FOR INSPECTION AND REPAIR.
- [SDR HEEA967783](https://openairdocs.org/sdr/HEEA967783), Sep 4, 1996: NOZZLE. DEFECTIVE. ENGINE REMOVED DUE TO UNABLE TO INSTALL 6 & 7 OIL PRESSURE NOZZLE. UPON INSPECTION OF TURBINE PARTS NOTED: EXCESSIVE RUNOUT BEYOND SERVICEABLE LIMITS ON #2 NOZZ
- [SDR HEEA967667](https://openairdocs.org/sdr/HEEA967667), Aug 16, 1996: CONTROL UNIT. FAILED. CONTROL WILL NOT POWER UP.
- [SDR HEEA967627](https://openairdocs.org/sdr/HEEA967627), Aug 2, 1996: NOZZLE. CRACKED. ENGINE REMOVED DUE TO CARBON 6 & 7 OIL PRESSURE STRUT. UPON INSPECTION OF TURBINE PARTS NOTED THE FOLLOWING: CRACKED BEYOND SERVICEABLE LIMITS ON #1 NOZZLE VANE
- [SDR HEEA955830](https://openairdocs.org/sdr/HEEA955830), Oct 5, 1995: RECEIVER. DEFECTIVE. WILL NOT ADJUST WITH LEFT HAND KNOB.
- [SDR HEEA955819](https://openairdocs.org/sdr/HEEA955819), Sep 29, 1995: CLUTCH. LOCKED UP. CLUTCH LOCKED UP AND CAUSED DAMAGE TO PINION AND F/W SHAFT. REPLACED CLUTCH WITH SERVICEABLE CLUTCH.
- [SDR HEEA955163](https://openairdocs.org/sdr/HEEA955163), Jun 13, 1995: VALVE. INTERMITTENT. INTERMITTENTLY INOPERATIVE. INSPECTED BY ACCESSORY OVERHAUL SHOP AND FOUND SOLENOID OPERATES, BUT THE VALVE STICKS AFTER VALVE WARMS UP.
- [SDR HEEA955049](https://openairdocs.org/sdr/HEEA955049), May 19, 1995: INDICATOR. FAILED. NO INDICATION.
- [SDR HEEA955048](https://openairdocs.org/sdr/HEEA955048), May 19, 1995: TRANSMITTER. DEFECTIVE. NO INDICATION.

## STCs that may be installed (OpenAirDocs)

None matched to this aircraft's models.

## Earlier aircraft with N9190Y

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N9190Y before.

- [Cancelled 1968-07-31](https://openairdocs.org/deregistered/N9190Y-1968-07-31): Piper PA-31, S/N 31-253, built 1968. Exported to Germany

## Related

- Other Messerschmitt BO 105CB aircraft: https://openairdocs.org/model/messerschmitt-bo-105cb/aircraft.md
- The Amateur-built UNKNOWN ENG engine: https://openairdocs.org/engine/amateur-built-unknown-eng.md

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