AD 2015-19-14
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus | Helicopters Model BO-105A | Airworthiness Directives; Airbus Helicopters Deutschland GmbH (formerly Eurocopter Deutschland GmbH) (Airbus Helicopters) Helicopters |
Unsafe Condition
Deterioration of the main gearbox (MGB) caused by a contaminated oil supply, which could result in MGB failure 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
Inspect the main gearbox (MGB) oil filter and MGB magnetic plug. If metallic fuzz is found, clean the magnetic plug, flush the main transmission, change the oil, and perform a ground run. If a chip is found, replace the main transmission with an airworthy one and clean the oil cooler and oil lines. Repeat the MGB magnetic plug inspection every 10 flight hours and the MGB oil filter inspection every 100 flight hours, unless a Purolator oil filter is installed, in which case the intervals are extended to 50 flight hours and 600 flight hours, respectively.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 50 flight hours after the effective date of the AD.
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Affected Aircraft
Airbus Helicopters Model BO-105A, BO-105C, and BO-105S helicopters with certain part-numbered Mann or Purolator oil filters installed.
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
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