AD 2006-19-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Eurocopter | Model AS350B, B1, B2, B3, BA, D, and AS355E | Airworthiness Directives; Eurocopter Model AS350B, B1, B2, B3, BA, D, and AS355E Helicopters |
Unsafe Condition
Cracks in the tapered housing of the main servo-control (MSC) could lead to loss of the attachment of the MSC to the upper attachment yoke, loss of main rotor control, and subsequent loss of control of the helicopter.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Within 10 hours time-in-service (TIS), inspect the tapered housing of each MSC for a crack. If no crack is found, before further flight, retorque the upper ball-end attachment nut of the MSC to between 177-199 in-lbs (2-2.25 daN·m). If a crack is found, before further flight, replace the MSC with an airworthy MSC and retorque the attachment nut.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 10 hours time-in-service (TIS)
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Eurocopter Model AS350B, B1, B2, B3, BA, D, and AS355E helicopters with MSCs not modified per MOD 073343 and on which the tightening torque of the attachment nut securing the upper ball end has been increased by following MOD 073191 or complying with MET Work Card 67.30.00.402 since MET Revision 04-06 for Model AS350 helicopters and Revision 04.08 for Model AS355 helicopters.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.