N5421E1989 Messerschmitt BO105CBS
This N-number isn't registered right now. Below is its last known registration, canceled May 11, 2024.
Safety record in brief:No NTSB accidents or incidents since 19823 ADs may apply51 service difficulty reports
- Registration
- Deregistered
Registration
FAA Aircraft Registry · Oct 19, 2026- Last registered owner
- Hp Aviation INC
- Owner type
- Corporation
- City, state
- Oldsmar, FL
- Canceled
- May 11, 2024
- Airworthiness
- Standard · Normal
- Airworthiness date
- Nov 29, 1989
We never show street addresses, even though they appear in the public FAA file. Individual owners are shown by city and state only.
Airframe & engine
FAA Registry + type dataAirframe
- Manufacturer
- Messerschmitt
- Model
- BO105CBS
- Year
- 1989
- Serial number
- S-806
- Aircraft type
- Rotorcraft
- Category
- Land
- Certification
- Type Certificated
- Seats
- 6
- Engines
- 2
- Max takeoff weight
- Up to 12,499 lb
- Mode S code
- A6E1DA
Engine
- Make and model
- Allison 250-C20 Ser
- Type
- Turbo-shaft
- Power
- 420 hp
Total time and engine hours aren't public. They appear here once the owner adds logbooks.
Ownership history
Ownership history from FAA records- until 2024Hp Aviation INCOldsmar, FL
Individual owners are shown by city and state only.
Safety record
NTSB · Oct 15, 2026 · FAA ADs · Oct 19, 2026 · SDRs · Oct 16, 2026NTSB events (0)
No NTSB accidents or incidents found for this airframe since 1982.
ADs published since 1998 that may apply (3)
These match the airframe or engine model. Whether each one applies, and whether it's been complied with, depends on serial numbers, equipment and logbook entries. Applicability must be confirmed by a mechanic against the aircraft's records.
| AD | Subject | Effective | Applies to |
|---|---|---|---|
| 2006-16-04 | Rolls-Royce Corporation (Formerly Allison Engine Company, Allison Gas Turbine Division… | Sep 7, 2006 | Engine (250-C20 SER) |
| 2006-13-06 | Rolls-Royce Corporation (Formerly Allison Engine Company, Allison Gas Turbine Division… | Jul 26, 2006 | Engine (250-C20 SER)Only with: Engines with gas producer rotor assembly tie bolt P/Ns A23008020, E23008020 (EXTEX), 23008020, 6843388, 6876991 (RRC), A23008020 (SAP), or 23008020P (Pacific Sky Supply) installed. |
| 2005-10-13 | Rolls-Royce Corporation (Formerly Allison Engine Company) 250-B17B, -B17C, -B17D, -B17E… | Jun 22, 2005 | Engine (250-C20 SER)Only with: Engines that do not have turbine energy absorbing ring RRC P/N 23035175, or an equivalent FAA-approved serviceable ring, installed. |
AI-extracted — verify against original. Matched from each AD's applicability section; ADs replaced by a later AD are left out.
Service Difficulty Reports (51)
Reports of failures and defects that operators and repair stations sent to the FAA since 1995. A report describes one finding; it is not an accident.
- Electrical power · battery · weakMay 30, 2002
BATTERY WEAK. REPAIRED.
From FAA Service Difficulty Reports; matched by N-number and serial number. - Fuel · pump · leakingNov 15, 1999
FUEL PUMP ASSY LEAKING AT SCREWS ON BASE PLATE.
From FAA Service Difficulty Reports; matched by N-number and serial number. - Engine · seal · chippedAug 17, 1999
ENGINE REMOVED DUE TO TURBINE OVERHAUL. UPON INSPECTION OF TURBINE PARTS NOTED: PITS AND CHIPPING ON CARBON SEAL MATING SURFACE. INSTALLED NEW CARBON SEAL.
From FAA Service Difficulty Reports; matched by N-number and serial number.
Show all 10 reportsShow fewer reports
- Navigation · indicator · inoperativeAug 9, 1999
TURN AND SLIP INDICATOR INOPERATIVE.
From FAA Service Difficulty Reports; matched by N-number and serial number. - Fuel · transmitter · failedNov 6, 1998
INDICATOR DROPS TO ZERO AFTER TRANSMITTER WARMS UP.
From FAA Service Difficulty Reports; matched by N-number and serial number. - Fuel · indicator · erraticNov 6, 1998
FUEL LEVEL GAUGE SUPPLY INDICATOR ERRATIC.
From FAA Service Difficulty Reports; matched by N-number and serial number. - Tail rotor drive · drive shaft · crackedNov 5, 1998
TAIL ROTOR HAS CRACKS IN PLATING.
From FAA Service Difficulty Reports; matched by N-number and serial number. - Fuel · transmitter · reads highAug 28, 1998
FUEL PRESSURE TRANSMITTER READS HIGH DURING PUMP OPERATION.
From FAA Service Difficulty Reports; matched by N-number and serial number. - Main rotor · warning box · malfunctionedAug 26, 1998
RPM LIGHT AND AUDIO COME ON INTERMITTENTLY.
From FAA Service Difficulty Reports; matched by N-number and serial number. - Engine indicating · indicator · stickingAug 14, 1998
TACHOMETER STICKS AT LOW RPM EXCESSIVE FRICTION ERROR.
From FAA Service Difficulty Reports; matched by N-number and serial number.
Showing the 10 most recent of 51 reports.
Sources
- FAA Aircraft RegistryRegistration, owner city and state, airframe, engineupdated Oct 19, 2026
- NTSB accident and incident databaseAccidents and incidents since 1982updated Oct 15, 2026
- FAA Airworthiness Directives (Federal Register)ADs published since 1998updated Oct 19, 2026
- FAA Service Difficulty ReportsReports since 1995updated Oct 16, 2026