N424MB1986 Messerschmitt-Bolkow-Blohm BK 117 A-4
This N-number isn't registered right now. Below is its last known registration, canceled Dec 27, 2013.
Safety record in brief:No NTSB accidents or incidents since 1982No ADs since 1998 matched26 service difficulty reports
- Registration
- Deregistered
Registration
FAA Aircraft Registry · Oct 20, 2026- Last registered owner
- Rocky Mountain Holdings LLC
- Owner type
- Corporation
- City, state
- Englewood, CO
- Certificate issued
- Dec 11, 2001
- Canceled
- Dec 27, 2013
- Airworthiness
- Standard · Transport
- Airworthiness date
- Jul 26, 2001
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 dataAirframe
- Manufacturer
- Messerschmitt-Bolkow-Blohm
- Model
- BK 117 A-4
- Year
- 1986
- Serial number
- 7082
- 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
- A50B90
Engine
- Make and model
- Ama/Expr Unknown Eng
- Type
- Turbo-shaft
Total time and engine hours aren't public. They appear here once the owner adds logbooks.
Ownership history
Ownership history from FAA records- 2001 – 2013Rocky Mountain Holdings LLCEnglewood, CO
Individual owners are shown by city and state only.
Safety record
NTSB · Oct 15, 2026 · FAA ADs · Oct 20, 2026 · SDRs · Oct 16, 2026NTSB events (0)
No NTSB accidents or incidents found for this airframe since 1982.
ADs published since 1998 that may apply (0)
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.
No ADs published since 1998 matched this airframe or engine model.
AI-extracted — verify against original. Matched from each AD's applicability section; ADs replaced by a later AD are left out.
Service Difficulty Reports (26)
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 · power lossSep 30, 2011
THE PILOT REPORTED, AFTER PREFLIGHT AND CONFIRMATION CHECKS WERE CONDUCTED, LIFTED TO HOVER. USED THE ENGINE BEEP SWITCH TO SLIGHTLY INCREASE THE NR/N2 RPM TO 100 PERCENT. ON CLIMBOUT REACHING 900 FEET MSL, REDUCED COLLECTIVE TO 50 % ENGINE TORQUE TO ASSESS VISIBILITY IN RAIN AND NOTED NR/N2…
From FAA Service Difficulty Reports; matched by N-number and serial number. - Electrical power · battery · dischargedMar 23, 2002
LEAD ACID BATTERY WILL NOT HOLD A CHARGE. STAYS AT 20 VOLTS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.
From FAA Service Difficulty Reports; matched by N-number and serial number. - Engine indicating · torquemeter · erraticJul 19, 2001
TORQUEMETER INDICATOR INOPERATIVE. NR 1 NEEDLE JUMPS ERRATICALLY. RECEIVED NEW WITH A3 AND A4 CONVERSION KIT. THIS UNIT IS BRAND NEW MANUFACTURE, NOT OVERHAULED OR REPAIRED. REPLACED WITH REPAIRED UNIT CORRECTED PROBLEM. (M)
From FAA Service Difficulty Reports; matched by N-number and serial number.
Show all 10 reportsShow fewer reports
- Engine indicating · thermocouple · shortedAug 18, 1999
INTERNAL SHORT. REPLACED THERMOCOUPLE WITH NEW UNIT, CORRECTED PROBLEM. (X)
From FAA Service Difficulty Reports; matched by N-number and serial number. - Engine · seal · wornAug 6, 1999
SEAL RING WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTIVE PROBLEM.
From FAA Service Difficulty Reports; matched by N-number and serial number. - Engine · spring · wornAug 6, 1999
SPRING WORN BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.
From FAA Service Difficulty Reports; matched by N-number and serial number. - Engine · blade · damagedAug 6, 1999
EXCESSIVE GP BLADE TIP RUB. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.
From FAA Service Difficulty Reports; matched by N-number and serial number. - Engine oil · tube · leakingAug 6, 1999
TUBE LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.
From FAA Service Difficulty Reports; matched by N-number and serial number. - Engine fuel and control · tube · leakingAug 6, 1999
TUBE LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.
From FAA Service Difficulty Reports; matched by N-number and serial number. - Engine · seal · leakingAug 6, 1999
SEAL LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.
From FAA Service Difficulty Reports; matched by N-number and serial number.
Showing the 10 most recent of 26 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