N155UM2011 Eurocopter EC 155 B1
Safety record in brief:No NTSB accidents or incidents since 19826 ADs may apply2 service difficulty reports
Registration
FAA Aircraft Registry · Oct 20, 2026- Registered owner
- Regents Of The University Of Michigan
- Owner type
- Government
- City, state
- Ann Arbor, MI
- Certificate issued
- Dec 28, 2018
- Expires
- Dec 31, 2028
- Airworthiness
- Standard · Transport
- Airworthiness date
- Apr 12, 2012
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
- Eurocopter
- Model
- EC 155 B1
- Year
- 2011
- Serial number
- 6934
- Aircraft type
- Rotorcraft
- Category
- Land
- Certification
- Type Certificated
- Seats
- 6
- Engines
- 2
- Max takeoff weight
- Up to 12,499 lb
- Type certificate data sheet
- H10EU
- Mode S code
- A0DE90
Engine
- Make and model
- Turbomeca Arriel 2c2
- Type
- Turbo-shaft
- Power
- 821 hp
Total time and engine hours aren't public. They appear here once the owner adds logbooks.
Ownership history
Ownership history from FAA records- 2018 – nowRegents Of The University Of MichiganAnn Arbor, MI · current
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.
Accident history for this modelADs published since 1998 that may apply (6)
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.
| AD | Subject | Effective | Applies to |
|---|---|---|---|
| 2016-25-13 | Safran Helicopter Engines, S.A. (Formerly Turbomeca S.A.) Turboshaft Engines | Feb 3, 2017 | Engine (ARRIEL 2C2)Only with: Engine accessory gearbox (AGB) P/N 0292120650 with a machined front casing installed. |
| 2016-03-02 | Turbomeca S.A. Turboshaft Engines | Mar 15, 2016 | Engine (ARRIEL 2C2)Only with: Engines with modification TU34 or TU34A installed. |
| 2015-13-04 | Turbomeca S.A. Turboshaft Engines | Sep 1, 2015 | Engine (ARRIEL 2C2) |
| 2014-12-05 | Turbomeca S.A. Turboshaft Engines | Aug 4, 2014 | Engine (ARRIEL 2C2) |
| 2012-18-18 | Turbomeca S.A. Turboshaft Engines | Oct 24, 2012 | Engine (ARRIEL 2C2)Only with: Engines not modified by TU166 modification. |
Show all 6 ADsShow fewer ADs
| AD | Subject | Effective | Applies to |
|---|---|---|---|
| 2012-12-20 | Turbomeca S.A. Turboshaft Engines | Jul 26, 2012 | Engine (ARRIEL 2C2)Only with: Engines with any of the digital engine control units (DECUs) listed in Table 1 of this AD 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.
- Indicating and recording systems · indication sys · false indicationFeb 25, 2015
DURING TAKEOFF WHILE CLIMBING, TRANSMISSION OIL PRESS WAS FLUCTUATING BETWEEN 1.4 & 3.8 BARS. THROUGH EXTENSIVE TROUBLESHOOTING DETERMINED IT WAS THE VEMD.
From FAA Service Difficulty Reports; matched by N-number and serial number. - Windows · window · crackedMar 14, 2014
WINDOW CRACKED FROM TOP TO BOTTOM, BEGINNING WHERE IT IS OVERLAPPED BY LOWER DOOR HINGE. EXTREMELY COLD WEATHER, -10 DEGREES F, CAUSED WINDOW TO BECOME INFLEXIBLE. WINDOW LIKELY CRACKED WHEN TOO MUCH PRESSURE WAS APPLIED TO THE DOOR WHILE IT WAS OPEN. PILOTS AND CREWS WERE CAUTIONED NOT TO APPLY…
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