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Aircraft record

N910701974 Messerschmitt-Boelkow-Blohm-Gm BO-105C

DeregisteredUnclaimedSource: FAA, updated Oct 20, 2026

This N-number isn't registered right now. Below is its last known registration, canceled May 13, 2003.

Safety record in brief:1 NTSB incident (Sep 1995)3 ADs may apply45 service difficulty reports

Registration
Deregistered
Last based in
Lafayette, LA
owner city / state
Owners
1
since 1994
NTSB events
1
1995
ADs may apply
3
confirm with A&P
Service reports
45
since 1995

Registration

FAA Aircraft Registry · Oct 20, 2026
Last registered owner
Petroleum Helicopters INC
Owner type
Corporation
City, state
Lafayette, LA
Certificate issued
Oct 26, 1994
Canceled
May 13, 2003
Airworthiness
Standard · Normal
Airworthiness date
Sep 18, 1987

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-Gm
Model
BO-105C
Year
1974
Serial number
S145
Aircraft type
Rotorcraft
Category
Land
Certification
Type Certificated
Seats
6
Engines
2
Max takeoff weight
Up to 12,499 lb
Type certificate data sheet
H3EU
Mode S code
AC9A11

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. 1994 – 2003Petroleum Helicopters INCLafayette, LA
  2. 1962 – 1970Commericial Aircraft CorpNew York, NY · different airframe: Douglas Dc-4 S/N 7447
  3. Date unknownIndividual ownerdifferent airframe: Piper Pa-25-235 S/N 258156024

Individual owners are shown by city and state only.

Safety record

NTSB · Oct 15, 2026 · FAA ADs · Oct 20, 2026 · SDRs · Oct 16, 2026

NTSB events (1)

Incident

Sep 18, 1995 · Lafayette, LA

a short in the 'jam proof system' solenoid valve which prevented activation of the backup hydraulic system and resulting in a cyclic hardover. Factors were the contaminated hydraulic fluid and the resulting jammed actuator (longitudinal control slider).

Injuries
None
Report
FTW95IA397

From NTSB records; matched by N-number.Read NTSB report (search CAROL for FTW95IA397)

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 (45)

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.

  • Main rotor · hub · corrodedNov 15, 1999

    MAIN ROTOR HUB HAD CORROSION ON ALL FOUR PITCH HORNS.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Fuel · pump · inoperativeNov 15, 1999

    FUEL PUMP INOPERATIVE.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Engine · tie bolt · mismanufacturedSep 23, 1999

    TIE BOLT INSPECTION REVEALED FREE LENGTH OVER MAX LIMITS AT 6.888 INCHES.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
Show all 10 reports
  • Engine oil · switch · malfunctionedJan 25, 1999

    WARNING LIGHT WILL NOT ILLUMINATE ZERO PRESSURE.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Engine · turbine rotor · failedDec 7, 1998

    NR 2 ENGINE OIL PRESSURE BEGAN TO FLUCTUATE IN CRUISE. LANDED WITHOUT INCIDENT. OIL LEVEL ONE AND ONE-HALF QUARTS LOW ON OIL. NO LEAKS NOTED. RE-SERVICED AND RETURNED TO SERVICE AFTER PENALTY RUN AND CHECK. FOLLOW-UP CHECK REVEALED ENGINE OIL CONSUMPTION. REPLACED TURBINE ROTOR ASSEMBLY.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Electrical power · starter · overheatedSep 11, 1998

    EVIDENCE OF OVERHEATING ON TERMINAL BLOCK.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Communications · transceiver · failedJul 27, 1998

    TRANSCEIVER CAN'T RECEIVE OR TRANSMIT.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Engine oil · switch · faultyJul 1, 1998

    TRANSMISSION PRESSURE LIGHT WILL NOT GO OUT.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Engine oil · switch · inoperativeJun 8, 1998

    OIL PRESSURE SWITCH UNIT WOULD NOT COME ON WITH BATTERY SWITCH.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Fuselage · floor panel · corrodedJun 5, 1998

    FLOOR PANEL CORRODED AND SEPARATED.

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

Showing the 10 most recent of 45 reports.

Sources

  • FAA Aircraft RegistryRegistration, owner city and state, airframe, engineupdated Oct 20, 2026
  • NTSB accident and incident databaseAccidents and incidents since 1982updated Oct 15, 2026
  • FAA Airworthiness Directives (Federal Register)ADs published since 1998updated Oct 20, 2026
  • FAA Service Difficulty ReportsReports since 1995updated Oct 16, 2026

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