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Aircraft record

N527MB1986 Messerschmitt-Bolkow-Blohm BK 117 A-4

DeregisteredUnclaimedSource: FAA, updated Oct 20, 2026

This N-number isn't registered right now. Below is its last known registration, canceled Jul 22, 2016.

Safety record in brief:No NTSB accidents or incidents since 19822 ADs may apply20 service difficulty reports

Registration
Deregistered
Last based in
Englewood, CO
owner city / state
Engine
LTS-101 SER · 317 hp
Lycoming
Owners
1
since 1998
NTSB events
None
since 1982
ADs may apply
2
confirm with A&P
Service reports
20
since 1995

Registration

FAA Aircraft Registry · Oct 20, 2026
Last registered owner
Omniflight Helicopters INC
Owner type
Corporation
City, state
Englewood, CO
Certificate issued
Jul 8, 1998
Canceled
Jul 22, 2016
Airworthiness
Standard · Transport
Airworthiness date
Jul 19, 2005

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
1986
Serial number
7103
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
A6A404

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. 1998 – 2016Omniflight Helicopters INCEnglewood, CO

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 (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 (20)

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.

  • Stabilizers · rib · crackedOct 5, 2011

    THE TOP RIB OF THE VERTICAL FIN WHERE THE ANTI COLLOSION LIGHT BASE IS MOUNTED, EXIBITS A CRACK RADIATING FROM THE NUTPLATE THAT IS MOUNTED UNDERNEATH.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Fuselage · skin · crackedJul 28, 2010

    DURING MX A 1" LONG CRACK WAS DISCOVERED IN THE TAILBOOM VERTICAL FIN OUTER SKIN STARTING FROM AN ACCESS OPENING AT THE UPPER END OF THE VERTICAL FIN. REPAIR SCHEME REQUEST WAS SUBMITTED FROM THE MFG.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Fuselage · fitting · crackedMar 23, 2009

    DURING A DAILY INSPECTION, THE TAIL ROTOR GEARBOX MOUNT FITTING WAS DISCOVERED CRACKED.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
Show all 10 reports
  • Rotor flight controls · support bracket · looseApr 22, 2008

    DURING SCHEDULED INSPECTION, A TAIL ROTOR CONTROL TUBE SUPPORT MOUNT WAS FOUND LOOSE INSIDE THE TAILCONE DUE TO WORKING RIVETS.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Engine indicating · indicator · inoperativeJun 1, 2001

    INDICATOR NG - NEEDLE DOES NOT MOVE. REMOVED AND REPLACED.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Lights · control unit · faultyJan 23, 2001

    CONTROL UNIT - SHUTS DOWN ON FULL BRIGHT. REMOVED AND REPLACED.

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Reciprocating engine · engine · making metalJun 10, 2000

    INSPECTED NR 2 ENGINE CHIP DETECTOR AND FOUND NO SIGN OF CHIPS OR DEBRIS. CLEARED CHIP PLUG AND REINSERTED INTO HOUSING. PILOT PERFORMED A GROUND RUN OF THE NR 2 ENGINE AND THE CHIP LIGHT DID NOT ILLUMINATE. PILOT SHUT ENGINE DOWN, RE-CHECKED CHIP PLUG AND FOUND NO EVIDENCE OF CHIPS. ADJUSTED NR 2…

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Engine indicating · indicator · fluctuatesJan 13, 2000

    INDICATOR FLUCTUATES UNDER POWER. REMOVED AND REPLACED. (X)

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Engine indicating · indicator · damagedJan 12, 2000

    NG INDICATOR TRIPPED CIRCUIT BREAKER WHEN INSTALLED AFTER REPAIR. REMOVED AND REPLACED. (X)

    From FAA Service Difficulty Reports; matched by N-number and serial number.
  • Equipment and furnishings · pump · failedAug 10, 1999

    MED VAC PUMP MOTOR SEIZING-UP CAUSING SMOKE AND FUMES IN COCKPIT WHICH CREATED AN EMERGENCY LANDING. REPLACED WITH SERVICEABLE VAC PUMP ASSY. FUNCTIONAL CHECK OK. NO FURTHER PROBLEMS.

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

Showing the 10 most recent of 20 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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