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Aircraft record

N102UM1981 Aerospatiale AS-355E TWIN STAR

Registration validUnclaimedSource: FAA, updated Oct 20, 2026

Safety record in brief:1 NTSB accident (substantial damage, Jul 2023)3 ADs may apply2 service difficulty reports

Registration
Valid
expires May 31, 2027
Based in
Ashland, OR
owner city / state
Owners
1
since 2017
NTSB events
1
substantial, 2023
ADs may apply
3
confirm with A&P
Service reports
2
since 1995

Registration

FAA Aircraft Registry · Oct 20, 2026
Registered owner
Timberland Helicopters INC
Owner type
Corporation
City, state
Ashland, OR
Certificate issued
May 2, 2017
Expires
May 31, 2027
Airworthiness
Standard · Normal
Airworthiness date
Apr 19, 1984

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
Aerospatiale
Model
AS-355E TWIN STAR
Year
1981
Serial number
5075
Aircraft type
Rotorcraft
Category
Land
Certification
Type Certificated
Seats
7
Engines
2
Max takeoff weight
Up to 12,499 lb
Type certificate data sheet
H11EU
Mode S code
A00DF0

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. 2017 – nowTimberland Helicopters INCAshland, OR · current

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)

Accident · substantial damage

Jul 19, 2023 · Farmington, UT

The premature failure of one of the No. 2 engine compressor bleed valve, which resulted in a partial loss of power to that engine.

Damage
Substantial
Injuries
None
Report
WPR23LA278

From NTSB records; matched by serial number.Read NTSB report (search CAROL for WPR23LA278)

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 (2)

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.

  • Fire protection · fire warning · activatedSep 25, 2014

    LEFT ENGINE FIRE LIGHT ILLUMINATED IN FLIGHT.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Main rotor drive · gearbox · making metalJul 29, 1999

    MAIN ROTOR TRANSMISSION CHIP LIGHT CAME ON IN-FLIGHT WHILE LANDING AT ITS BASE OF OPERATION. MAINTENANCE REMOVED CHIP PLUG. SEVERAL CHIPS WERE FOUND ON PLUG. EXAMINED OIL FILTER METAL AND ALUMINUM WAS PRESENT IN FILTER. REMOVED BEVEL REDUCTION GEARBOX ON COMBINING GEARBOX FOR REPAIR. TSO: 2,359.4…

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

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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