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AD: MDHI

AD NUMBER: PL2008-22-52
MANUFACTURER: MDHI
SUBJECT: Airworthiness Directive PL2008-22-52
SUMMARY:
This superseding Emergency Airworthiness Directive (EAD) is prompted by several occurrences of failed adapter tubes.

These incidents occurred on the MD900 helicopter Vertical Stabilizer Control System (VSCS); however, the same adapter tubes are used on 500N and 600N helicopter Yaw Stability Augmentation System (YSAS).

We are issuing this EAD to prevent a reduction of yaw control and subsequent loss of control of the helicopter.

FMI: www.faa.gov/regulations_policies/airworthiness_directives/

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