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Aircraft record

N138HH1985 Messerschmitt-Bolkow-Blohm BK 117 A-4

DeregisteredUnclaimedSource: FAA, updated Oct 19, 2026

This N-number isn't registered right now. Below is its last known registration, canceled Mar 21, 2019.

Safety record in brief:No NTSB accidents or incidents since 19822 ADs may apply3 service difficulty reports

Registration
Deregistered
Last based in
Englewood, CO
owner city / state
Engine
LTS-101 SER · 317 hp
Lycoming
Owners
1
since 1996
NTSB events
None
since 1982
ADs may apply
2
confirm with A&P
Service reports
3
since 1995

Registration

FAA Aircraft Registry · Oct 19, 2026
Last registered owner
Rocky Mountain Holdings L L C
Owner type
Corporation
City, state
Englewood, CO
Certificate issued
Jun 4, 1996
Canceled
Mar 21, 2019
Airworthiness
Standard · Transport
Airworthiness date
Aug 31, 1993

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-Bolkow-Blohm
Model
BK 117 A-4
Year
1985
Serial number
7060
Aircraft type
Rotorcraft
Category
Land
Certification
Type Certificated
Seats
8
Engines
2
Max takeoff weight
Up to 12,499 lb
Type certificate data sheet
H13EU
Mode S code
A099A0

Engine

Make and model
Lycoming Lts-101 Ser
Type
Turbo-shaft
Power
317 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. 1996 – 2019Rocky Mountain Holdings L L CEnglewood, CO

Individual owners are shown by city and state only.

Safety record

NTSB · Oct 15, 2026 · FAA ADs · Oct 18, 2026 · SDRs · Oct 16, 2026

NTSB events (0)

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

ADs published since 1998 that may apply (2)

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
2001-22-07Honeywell International, Inc. LTP 101 Series Turboprop and LTS101 Series Turboshaft…Nov 30, 2001Engine (LTS-101 SER)Only with: Rigid tube fuel manifolds P/N 4-301-042-02, -04, -05, -06, 4-301-236-01, -02, -03, -04, 4-301-286-01, -02, or 4-301-376-01 installed.
96-12-27AlliedSignal Inc. (formerly Textron Lycoming) LTS 101 Series Turboshaft and LTP 101…Aug 19, 1996Engine (LTS-101 SER)

AI-extracted — verify against original. Matched from each AD's applicability section; ADs replaced by a later AD are left out.

Service Difficulty Reports (3)

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.

  • Fuselage · floor panel · failedMar 5, 2014

    UPON INSPECTION DISCOVERED PILOT'S THRUST REVERSER PEDAL BELL CRANK ASSEMBLY SEPARATED FROM THE FLOOR PANEL IN THE AREA OF THE FWD ATTACH BOLTS DUE TO FATIGUE OF THE POTTING COMPOUND, NO EVIDENCE OF CORROSION.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Tail rotor · blade · dentedJul 5, 2013

    DURING DAILY AIRWORTHINESS CHECK, NOTICED A DENT TO THE L/E ERROSION STRIP ON TAIL ROTOR BLADE. ACFT TAKEN OUT OF SERVICE. DETERMINED TAIL ROTOR BLADE TO BE UNSERVICEABLE. INVESTIGATION INTO CAUSE OF DAMAGE IS IN PROGRESS. THE ACFT HAS SINCE RETURNED TO SERVICE WITH NO ADDITIONAL DEFECTS NOTED.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Air conditioning and pressurization · unknown · odorJan 2, 2008

    SHORTLY AFTER TAKEOFF, MED CREW SAID THEY COULD DETECT A FUEL TYPE ODOR THAT WAS FAIRLY STRONG. THE PILOT ABORTED THE FLIGHT AND LANDED AT DEPARTURE. AIRCRAFT WAS SHUTDOWN. THE PILOT CHECKED ENGINE COMPARTMENTS FOR FUEL AND CHECKED UNDER DRAIN LINES FOR FUEL. NONE WAS FOUND AND NO ODOR OF FUEL WAS…

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

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 18, 2026
  • FAA Service Difficulty ReportsReports since 1995updated Oct 16, 2026

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