AD 2004-16-15 R1

final rule

Data completeness: 70%

Airworthiness Directives; Eurocopter France Model AS-365N2, AS 365 N3, EC 155B, EC155B1, SA-365N, N1, and SA-366G1 Helicopters

AD Number: 2004-16-15 R1
Status: final_rule
Effective Date: August 30, 2006
Product Category: aircraft
Docket: FAA-2004-18850
FR Citation: (Federal Register: July 26, 2006 (Volume 71, Number 143))

Applicability

Type	Manufacturer	Model	Details
aircraft	Airbus Helicopters	AS-365N2	Airworthiness Directives; Eurocopter France Model AS-365N2, AS 365 N3, EC 155B, EC155B1, SA-365N, N1, and SA-366G1 Helicopters
aircraft	Airbus Helicopters	AS-365N3	Airworthiness Directives; Eurocopter France Model AS-365N2, AS 365 N3, EC 155B, EC155B1, SA-365N, N1, and SA-366G1 Helicopters
aircraft	Airbus Helicopters	EC 155B	Airworthiness Directives; Eurocopter France Model AS-365N2, AS 365 N3, EC 155B, EC155B1, SA-365N, N1, and SA-366G1 Helicopters
aircraft	Airbus Helicopters	EC155B1	Airworthiness Directives; Eurocopter France Model AS-365N2, AS 365 N3, EC 155B, EC155B1, SA-365N, N1, and SA-366G1 Helicopters
aircraft	Airbus Helicopters	SA-365N	Airworthiness Directives; Eurocopter France Model AS-365N2, AS 365 N3, EC 155B, EC155B1, SA-365N, N1, and SA-366G1 Helicopters
aircraft	Airbus Helicopters	SA-365N1	Airworthiness Directives; Eurocopter France Model AS-365N2, AS 365 N3, EC 155B, EC155B1, SA-365N, N1, and SA-366G1 Helicopters
aircraft	Airbus Helicopters	SA-366G1	Airworthiness Directives; Eurocopter France Model AS-365N2, AS 365 N3, EC 155B, EC155B1, SA-365N, N1, and SA-366G1 Helicopters

Unsafe Condition

Main gearbox (MGB) base plate

Source: Official FAA Source ↗

Retrieved: Apr 8, 2026

Rights: U.S. Government Public Domain

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