AD 2017-05-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus | Helicopters Model BO-105C | Airworthiness Directives; Airbus Helicopters Deutschland GmbH (Airbus Helicopters) (Previously Eurocopter Deutschland GmbH) |
Unsafe Condition
Incorrect bonding of the erosion protective shell to the main rotor blade (MRB) could result in loss of the shell in-flight, which could strike the tailboom or the tail rotor, causing an imbalance in the main rotor and high vibrations. These vibrations could damage the helicopter, leading to loss of tail rotor control and subsequent loss of control of the helicopter.
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Required Actions
Inspect each main rotor blade (MRB) shell for debonding within 10 hours time-in-service (TIS) and thereafter at intervals not to exceed 50 hours TIS until the MRB reaches 200 hours TIS. If debonding is found, repair or replace the MRB before further flight.
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Compliance Time
Within 10 hours TIS for the initial inspection, followed by inspections at intervals not to exceed 50 hours TIS until the MRB reaches 200 hours TIS.
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Affected Aircraft
Airbus Helicopters Model BO-105C, BO-105LS A-3, and BO-105S helicopters with certain part-numbered MRBs where the shell was last replaced between December 1, 2010, and February 28, 2015, inclusive, or where the most recent date of shell replacement cannot be determined from maintenance records.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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