Type Record · As of May 3, 2026
AIRBUS HELICOPTERS EC 155B1
Rotorcraft · SAFRAN ARRIEL 2C2
Registered
3
Year Range
2015–2019
NTSB Events
1
Airworthiness Directives
50
Aircraft Resources
01 / Distribution
Where the fleet lives and was built
Counts of currently-registered AIRBUS HELICOPTERS EC 155B1 aircraft by US state and decade of manufacture, sourced from the FAA Aircraft Registry.
By State (top 10)
- PR 33.3% 1
- NJ 33.3% 1
- PA 33.3% 1
By Decade of Manufacture
- 2010s 66.7% 2
- Unknown 33.3% 1
02 / NTSB Records
Events involving AIRBUS HELICOPTERS EC 155B1 aircraft
1 event(s) on file. Showing the most recent 1.
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Jan 9, 2010
N155TDLake Isabella, California Fatal
NTSB Docket →
03 / Airworthiness Directives
FAA directives applicable to AIRBUS HELICOPTERS EC 155B1
50 directive(s) on file. Showing the most recent 25 · 25 more in the Federal Register.
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Jul 22, 2025
Airworthiness Directives; Airbus Helicopters
The FAA is adopting a new airworthiness directive (AD) for all Airbus Helicopters Model AS 365 N3, EC 155B, and EC155B1 helicopters. This AD was prompted by reports of false engine fire warnings. This AD requires replacing affected engine fire detectors and prohibits installing an affected engine fire detector or an e…
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Jul 10, 2025
Airworthiness Directives; Airbus Helicopters
The FAA is adopting a new airworthiness directive (AD) for all Airbus Helicopters Model AS-365N2, AS 365 N3, EC 155B, EC155B1, SA- 365N, and SA-365N1 helicopters. This AD was prompted by reports of loss of tightening torque between the upper ball bearing end and the main rotor (MR) servo-control. This AD requires insp…
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Jul 2, 2025
Airworthiness Directives; Airbus Helicopters
The FAA proposes to adopt a new airworthiness directive (AD) for all Airbus Helicopters Model EC 155B and EC155B1 helicopters. This proposed AD was prompted by a determination that the required forces to jettison the windows exceed the maximum jettisoning effort requirements and the development of a modification of th…
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Apr 25, 2025
Airworthiness Directives; Airbus Helicopters
The FAA proposes to adopt a new airworthiness directive (AD) for all Airbus Helicopters Model AS 365 N3, EC 155B, and EC155B1 helicopters. This proposed AD was prompted by reports of false engine fire warnings. This proposed AD would require replacing affected engine fire detectors and prohibit installing an affected…
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Apr 15, 2025
Airworthiness Directives; Airbus Helicopters
The FAA proposes to adopt a new airworthiness directive (AD) for all Airbus Helicopters Model AS-365N2, AS 365 N3, EC 155B, EC155B1, SA-365N, and SA-365N1 helicopters. This proposed AD was prompted by reports of loss of tightening torque between the upper ball bearing end and the main rotor (MR) servo-control. This pr…
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Mar 7, 2025
Airworthiness Directives; Airbus Helicopters
The FAA is adopting a new airworthiness directive (AD) for all Airbus Helicopters Model EC 155B, EC155B1, SA-365N, SA-365N1, AS-365N2, and AS 365 N3 helicopters. This AD prompted by an engine compartment fire where the upper stiffener of the central firewall in the engine compartment was found damaged. This AD require…
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Jan 31, 2025
Airworthiness Directives; Airbus Helicopters
The FAA is adopting a new airworthiness directive (AD) certain Airbus Helicopters Model AS332C, AS332C1, AS332L, AS332L1, AS332L2, AS355E, AS355F, AS355F1, AS355F2, AS355N, AS355NP, AS-365N2, AS 365 N3, EC 155B, EC155B1, EC225LP, SA-365N, and SA-365N1 helicopters. This AD was prompted by a report of an unintentional a…
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Oct 16, 2024
Airworthiness Directives; Airbus Helicopters
The FAA proposes to adopt a new airworthiness directive (AD) for certain Airbus Helicopters Model AS332C, AS332C1, AS332L, AS332L1, AS332L2, AS355E, AS355F, AS355F1, AS355F2, AS355N, AS355NP, AS-365N2, AS 365 N3, EC 155B, EC155B1, EC225LP, SA-365N, and SA-365N1 helicopters. This proposed AD was prompted by a report of…
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Sep 30, 2024
Airworthiness Directives; Airbus Helicopters
The FAA proposes to adopt a new airworthiness directive (AD) for all Airbus Helicopters Model EC 155B, EC155B1, SA-365N, SA-365N1, AS-365N2, and AS 365 N3 helicopters. This proposed AD was prompted by an engine compartment fire where the upper stiffener of the central firewall in the engine compartment was found damag…
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Aug 3, 2023
Airworthiness Directives; Airbus Helicopters
The FAA is adopting a new airworthiness directive (AD) for all Airbus Helicopters Model EC155B1 helicopters. This AD was prompted by reports of failure of the main gearbox (MGB) oil cooling fan hub (fan hub). This AD requires, for helicopters with an affected part (fan hub) installed, using an endoscope, repetitively…
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May 12, 2023
Airworthiness Directives; Airbus Helicopters
The FAA proposes to adopt a new airworthiness directive (AD) for all Airbus Helicopters Model EC155B1 helicopters. This proposed AD was prompted by reports of failure of the main gearbox (MGB) oil cooling fan hub (fan hub). This proposed AD would require for helicopters with an affected part (fan hub) installed, using…
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Nov 16, 2022
Airworthiness Directives; Airbus Helicopters
The FAA is adopting a new airworthiness directive (AD) for Airbus Helicopters Model SA-365N, SA-365N1, AS-365N2, AS 365 N3, EC 155B, and EC155B1 helicopters. This AD was prompted by reports of the cockpit doors failing to open after ditching with inflated floats on certain helicopters equipped with an emergency flotat…
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Aug 12, 2022
Airworthiness Directives; Airbus Helicopters
The FAA proposes to adopt a new airworthiness directive (AD) for Airbus Helicopters Model SA-365N, SA-365N1, AS-365N2, AS 365 N3, EC 155B, and EC155B1 helicopters. This proposed AD was prompted by reports of the cockpit doors failing to open after ditching with inflated floats on certain helicopters equipped with an e…
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Jul 11, 2022
Airworthiness Directives; Airbus Helicopters
The FAA is adopting a new airworthiness directive (AD) for all Airbus Helicopters Model AS-365N2, AS 365 N3, EC 155B, EC155B1, and SA- 365N1 helicopters. This AD was prompted by a large amount of critical scale particles found on the tail rotor gearbox (TGB) chip detector magnetic plug during an unscheduled check of t…
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Jun 8, 2022
Airworthiness Directives; Airbus Helicopters
The FAA is adopting a new airworthiness directive (AD) for all Airbus Helicopters Model AS355E, AS355F, AS355F1, AS355F2, AS-365N2, AS 365 N3, SA-365N, SA-365N1, EC 155B, and EC155B1 helicopters. This AD was prompted by investigation results from an engine compartment fire, which determined some of the internal parts…
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Apr 26, 2022
Airworthiness Directives; Airbus Helicopters
The FAA is superseding airworthiness directive (AD) for 2021- 05-05 which applied to all Airbus Helicopters Model SA-365N1, AS-365N2, AS 365 N3, SA-366G1, EC 155B, and EC155B1 helicopters. AD 2021-05-05 required modifying the helicopter by replacing the tail rotor gearbox (TGB) control shaft guide bushes; repetitive i…
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Apr 12, 2022
Airworthiness Directives; Airbus Helicopters
The FAA is adopting a new airworthiness directive (AD) for all Airbus Helicopters Model EC 155B and EC155B1 helicopters. This AD was prompted by a report of a discrepancy in the rotorcraft flight manual (RFM) where the rotorcraft stay-up flying capabilities for Category B operation were provided through performance da…
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Apr 11, 2022
Airworthiness Directives; Airbus Helicopters
The FAA proposes to adopt a new airworthiness directive (AD) for all Airbus Helicopters Model AS-365N2, AS 365 N3, EC 155B, EC155B1, and SA-365N1 helicopters. This proposed AD was prompted by a large amount of critical scale particles found on the tail rotor gearbox (TGB) chip detector magnetic plug during an unschedu…
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Mar 29, 2022
Airworthiness Directives; Airbus Helicopters
The FAA proposes to adopt a new airworthiness directive (AD) for all Airbus Helicopters Model AS355E, AS355F, AS355F1, AS355F2, AS- 365N2, AS 365 N3, SA-365N, SA-365N1, EC 155B, and EC155B1 helicopters. This proposed AD was prompted by investigation results from an engine compartment fire, which determined some of the…
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Feb 18, 2022
Airworthiness Directives; Airbus Helicopters
The FAA proposes to supersede airworthiness directive (AD) 2021-05-05, which applies to all Airbus Helicopters Model SA-365N1, AS- 365N2, AS 365 N3, SA-366G1, EC 155B, and EC155B1 helicopters. AD 2021- 05-05 requires modifying the helicopter by replacing the tail rotor gearbox (TGB) control shaft guide bushes; repetit…
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Feb 10, 2022
Airworthiness Directives; Airbus Helicopters
The FAA proposes to adopt a new airworthiness directive (AD) for all Airbus Helicopters Model EC 155B and EC155B1 helicopters. This proposed AD was prompted by a report of a discrepancy in the rotorcraft flight manual (RFM) where the rotorcraft stay-up flying capabilities for Category B operation were provided through…
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Jan 31, 2022
Airworthiness Directives; Umlaut Engineering GmbH (Previously P3 Engineering GmbH) HAFEX (Halon-Free) Hand-Held Fire Extinguishers
The FAA is adopting a new airworthiness directive (AD) for certain Umlaut Engineering GmbH (previously P3 Engineering GmbH) HAFEX (Halon-free) hand-held P3HAFEX fire extinguishers (fire extinguishers). This AD was prompted by reports of a quality control issue on certain fire extinguishers, where the spindle geometrie…
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Jan 5, 2022
Airworthiness Directives; Airbus Helicopters
The FAA is superseding Airworthiness Directive (AD) 2020-21-01 for certain Airbus Helicopters Model AS-365N2, AS 365N3, EC 155B, EC155B1, and SA-365N1 helicopters. AD 2020-21-01 required modifying the main gearbox (MGB) tail rotor (T/R) drive flange installation. This AD was prompted by several reported occurrences of…
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Nov 26, 2021
Airworthiness Directives; Airbus Helicopters
The FAA is adopting a new airworthiness directive (AD) for Airbus Helicopters Model EC 155B and EC155B1 helicopters. This AD was prompted by the failure of a main gearbox (MGB) second stage planet gear. This AD requires replacing the MGB, or as an alternative, replacing the epicyclic reduction gear module for certain…
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Nov 3, 2021
Airworthiness Directives; Umlaut Engineering GmbH (Previously P3 Engineering GmbH) HAFEX (Halon-Free) Hand-Held Fire Extinguishers
The FAA is adopting a new airworthiness directive (AD) for certain Umlaut Engineering GmbH (previously P3 Engineering GmbH) HAFEX (Halon-free) hand-held fire extinguishers (fire extinguishers).This AD was prompted by a report of a safety issue on certain fire extinguishers, where certain environmental factors may proh…
04 / Regulations watching this type
Advisory Circulars and Federal Register activity for AIRBUS HELICOPTERS EC 155B1
Advisory Circulars
No ACs explicitly mention this type. Showing universal operating-rule ACs that apply to all aircraft.
Recent Federal Register activity
Latest rulemakings touching general operating rules (Part 91) and maintenance rules (Part 43).
- 2026-04-17 Settlement Policy for Small Unmanned Aircraft System (UAS) Cases FR ↗
- 2026-02-10 Normalizing Unmanned Aircraft Systems Beyond Visual Line of Sight Operations; Reopening of Comment Period; Denial of Extension FR ↗
- 2026-02-02 25-Hour Cockpit Voice Recorder (CVR) Requirement, New Aircraft Production FR ↗
- 2026-01-28 Normalizing Unmanned Aircraft Systems Beyond Visual Line of Sight Operations; Reopening of Comment Period FR ↗
- 2026-01-07 Requirements for Interference-Tolerant Radio Altimeter Systems FR ↗
05 / Aircraft of this type
All 3 registered N-numbers
Every tail currently on the FAA registry for this make/model. Click an N-number to query the FAA Aircraft Inquiry; rows flagged ● have NTSB events on file. Tails seeded with full TallyAero pages link directly.
05 / Sources & Methodology
Every count traces back to a primary US-government source
- FAA Aircraft Registry →
Refreshed Apr 27, 2026
Available
- NTSB CAROL →
Refreshed Apr 27, 2026
Available
- Federal Register (FAA Airworthiness Directives) →
Refreshed Apr 27, 2026
Available
We render counts and lists as the agency publishes them. Read the methodology →