Airworthiness Directive · Amendment 39-18813 · Main rotor blade
Airbus Helicopters Deutschland GmbH (Airbus Helicopters) (Previously Eurocopter Deutschland GmbH)
This AD applies to Airbus Helicopters Deutschland GmbH Model BO-105C, BO-105LS A-3, and BO-105S helicopters, certificated in any category, with a main rotor blade (MRB) part number 105-15103, 105-15141, 105-15141V001, 105-15143, 105-15150, 105-15150V001, 105-15152, 105-81013, 105-87214, 1120-15101, or 1120-15103 that has less than 200 hours time-in-service (TIS) since the MRB erosion protective shell (shell) was last replaced, and where the shell was last replaced between December 1, 2010, and February 28, 2015, inclusive or where the most recent date of replacement of the shell is unknown.
We are adopting a new airworthiness directive (AD) for Airbus Helicopters Model BO-105C, BO-105LS A-3, and BO-105S helicopters. This AD requires inspecting each main rotor blade (MRB) for debonding, and is prompted by a report of incorrect bonding of the shell to the MRB. These actions are intended to detect and prevent an unsafe condition on these products.
You are responsible for performing each action required by this AD within the specified compliance time unless it has already been accomplished prior to that time.
Within 10 hours TIS, and thereafter at intervals not to exceed 50 hours TIS:
(1) Inspect by tap test each MRB for debonding of the shell.
(2) If the shell has debonded in any area, before further flight, repair any debonding that does not exceed the maximum repair damage limits, or replace the MRB.
