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Aircraft record

N290EH1990 Messerschmitt-Boelkow-Blohm BO-105S

DeregisteredUnclaimedSource: FAA, updated Oct 17, 2026

This N-number isn't registered right now. Below is its last known registration, canceled Jan 29, 2014.

Safety record in brief:No NTSB accidents or incidents since 19823 ADs may apply12 service difficulty reports

Registration
Deregistered
Last based in
La Crescenta, CA
owner city / state
Owners
1
since 2014
NTSB events
None
since 1982
ADs may apply
3
confirm with A&P
Service reports
12
since 1995

Registration

FAA Aircraft Registry · Oct 17, 2026
Last registered owner
S&s Aviation Services INC
Owner type
Corporation
City, state
La Crescenta, CA
Certificate issued
Jan 29, 2014
Canceled
Jan 29, 2014
Airworthiness
Standard · Normal
Airworthiness date
Feb 18, 1990

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 data

Airframe

Manufacturer
Messerschmitt-Boelkow-Blohm
Model
BO-105S
Year
1990
Serial number
S-850
Aircraft type
Rotorcraft
Category
Land
Certification
Type Certificated
Seats
5
Engines
2
Max takeoff weight
Up to 12,499 lb
Type certificate data sheet
H3EU
Mode S code
A2F5E6

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
  1. 2014S&s Aviation Services INCLa Crescenta, CA

Individual owners are shown by city and state only.

Safety record

NTSB · Oct 15, 2026 · FAA ADs · Oct 17, 2026 · SDRs · Oct 16, 2026

NTSB events (0)

No NTSB accidents or incidents found for this airframe since 1982.

Accident history for this model

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.

ADSubjectEffectiveApplies to
2006-16-04Rolls-Royce Corporation (Formerly Allison Engine Company, Allison Gas Turbine Division…Sep 7, 2006Engine (250-C20 SER)
2006-13-06Rolls-Royce Corporation (Formerly Allison Engine Company, Allison Gas Turbine Division…Jul 26, 2006Engine (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.
2005-10-13Rolls-Royce Corporation (Formerly Allison Engine Company) 250-B17B, -B17C, -B17D, -B17E…Jun 22, 2005Engine (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 (12)

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.

  • Engine · engine · inoperativeMay 9, 2008

    UPON LANDING, ENGINE 2 MADE AND EXPLOSIVE SOUND. NG WENT TO 0 TORQUE WENT TO 0. FUEL SUPPLY TO ENGINE TO WAS CUT OFF, ENGINE 1 WAS INCREASED TO MAX POWER AND A SUCCESSFUL RUN ON LANDING WAS MADE ON RUNWAY 17.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Engine · engine · inoperativeMay 9, 2008

    DURING APPROACH, ENGINE 2 MADE EXPLOSIVE SOUND, NG WENT TO 0 TORQUE WENT TO 0. FUEL SUPPLY WAS CUT OFF, ENGINE 1 WAS INCREASED TO MAX AND A RUN ON LANDING WAS MADE WITHOUT EVENT. TO RUNWAY 17.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Engine fuel and control · fuel nozzle · malfunctionedNov 20, 2002

    FUEL NOZZLE STREAKS. ERRODED METER SET. INSTALLED NEW METER SET.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
Show all 10 reports
  • Main rotor drive · sleeve · stiffNov 19, 2002

    SLIDING SLEEVE STIFF. SLIDING SLEEVE BUSHINGS ARE VERY TIGHT, UPON REMOVAL SLIDING SLEEVE, SCRAPPED DUE TO EXCESSIVE CORROSION. INSTALLED NEW SLIDING SLEEVE, MAST SEAL & PACKINGS. REASSEMBLED TOP CASE ASSY & REINSTALLED IAW REM 103, COMPLIED WITH FREEWHEEL INSPECTION IAW REM 103.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Fuselage · structure · crackedOct 12, 2001

    TAILBOOM REMOVED FROM AIRCRAFT DUE TO CRACKED SKIN RT SIDE BASE OF VERTICAL FIN. FOUND RUSTED, CORRODED & PITTED TAIL SKID BRACKETS. CORRODED FWD MOUNTING FLANGES. CORROSION & PITTED SPOTS ON 90 DEGREE GEARBOX FITTING BOLT HOLES. ACTION TAKEN: INSTALLED NEW TAILSKID BRACKETS, FWD & AFT, INSTALLED…

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Main rotor drive · transmission · contaminatedJun 13, 2001

    TRANSMISSION IS CONTAMINATED BY TRASH FROM OIL COOLER. REMOVED ALL OIL JETS TO FLUSH OUT ALL OIL PASSAGES. REMOVED TOP CASE & CENTER HOUSING, CLEANED AND FLUSHED ALL OIL JETS AND OIL PASSAGES, REPAIRED ACCEDSSORY DRIVE, REASSEMBLED TRANSMISSION WITH NEW O-RINGS IAW REM 103.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Main rotor drive · transmission · making metalMay 1, 2001

    TRANSMISSION MAKING METAL. REMOVED SLIP RING CARRIER, FOUND LT BEVEL GEAR BREAKING DOWN. FOUND OIL PUMP DAMAGED FROM METAL CONTAMINATION. PUMP SENT OUT FOR REPAIR. THIS INFORMATION FOR FAA SDR. ACTION TAKEN: REPAIRED TRANSMISSION I/A/W REM 103, INST'D NEW L/H INPUT PINION & BEVEL GEAR, SERVICEABLE…

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Tail rotor · hub · mismanufacturedJan 14, 2000

    BEARING JOURNALS MACHINED TOO THICK. CAUSING RACE TO SPLIT AND SPIN.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Engine · heat shield · mismanufacturedJan 13, 2000

    NEW HEAT SHIELD WITH OUTER BAND TOO THICK.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Main rotor drive · shaft · leakingMay 19, 1999

    FREEWHEEL SHAFT CAUSING INPUT SEAL LEAK.

    From FAA Service Difficulty Reports; matched by N-number and serial number.

Showing the 10 most recent of 12 reports.

Sources

  • FAA Aircraft RegistryRegistration, owner city and state, airframe, engineupdated Oct 17, 2026
  • NTSB accident and incident databaseAccidents and incidents since 1982updated Oct 15, 2026
  • FAA Airworthiness Directives (Federal Register)ADs published since 1998updated Oct 17, 2026
  • FAA Service Difficulty ReportsReports since 1995updated Oct 16, 2026

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