AD Amdt-39-13524

final rule
Data completeness: 70%

Airworthiness Directives; Eurocopter France Model EC 155B Helicopters

AD Number
Amdt-39-13524
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Docket No. 2003-SW-12-AD
FR Citation
69 FR 12064

Applicability

TypeManufacturerModelDetails
aircraft Eurocopter France Model EC 155B Airworthiness Directives; Eurocopter France Model EC 155B Helicopters

Unsafe Condition

Tail rotor induced vibrations during flight tests can lead to vibration in the tail rotor and pilot's anti-torque pedals, potentially causing blade pitch control failure and loss of control.

AI-generated summary from the source AD text. Verify against the official source before acting.

Required Actions

Install a tail rotor blade-to-torsion bar attachment tuning weight assembly on each blade of the Quiet Fenestron tail rotor. Replace each blade attachment bushing.

AI-generated summary from the source AD text. Verify against the official source before acting.

Compliance Time

Before further flight

AI-generated summary from the source AD text. Verify against the official source before acting.

Affected Aircraft

Eurocopter France EC 155B helicopters with the specified configuration.

AI-generated summary from the source AD text. Verify against the official source before acting.

Source: Official FAA Source ↗

Retrieved: Apr 6, 2026

Rights: U.S. Government Public Domain

This site is not affiliated with or endorsed by the FAA. Always verify with official sources.

View Official Source ↗ Find More ADs for Eurocopter France Model EC 155B

Related Airworthiness Directives

2006-06-01

final rule

Airworthiness Directives; Eurocopter France Model EC 155B and B1 Helicopters

Unsafe Condition: This amendment adopts a new airworthiness directive (AD) for the specified Eurocopter France (ECF) model helicopters that requires inspecting an electrical cable bundle for wear. If wear is present...

Effective: Apr 18, 2006 Category: aircraft

2005-13-23

final rule

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

Unsafe Condition: unsafe condition and should be added to the existing AD.

Effective: Jul 29, 2005 Category: aircraft

2005-06-01

final rule

Airworthiness Directives; Eurocopter France Model EC 155B and EC 155B1 Helicopters

Unsafe Condition: This amendment adopts a new airworthiness directive (AD) for Eurocopter France (Eurocopter) Model EC 155B and EC 155B1 helicopters that requires inspecting the chamfer of the stop on the cabin slid...

Effective: Apr 18, 2005 Category: aircraft

2005-03-09 Recurring

final rule

Airworthiness Directives; Eurocopter France Model EC 155B, EC155B1, SA-360C, SA-365C, SA-365C1, SA-365C2, SA-365N, SA-365N1, AS-365N2, AS 365 N3, and SA-366G1 Helicopters

Unsafe Condition: which could lead to a MGB seizure and subsequent loss of control of the helicopter.

Effective: Mar 1, 2005 Category: aircraft

View all Eurocopter ADs →