Airworthiness directives › 2019-12-18
AD 2019-12-18 Airworthiness Directives; Robinson Helicopter Company Helicopters
Makes named: robinson. Models named: R44 II. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to Robinson Helicopter Company Model R44 II helicopters certificated in any category.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
(1) For helicopters with an engine air induction hose (hose) part number A785-31 installed after April 30, 2018 or helicopter serial numbers 14248 through 14268 and 14270 through 14286, within 10 hours time-in-service (TIS): (i) Inspect the inside of the hose for separation between the outer and inner layers, and flex the hose in all directions while listening for a crinkling sound, which is an indication of separation. (ii) If there is any separation or a crinkling sound, replace the hose before further flight. (iii) If there is no separation and no crinkling sound, replace the hose within 50 hours TIS. (2) After the effective date of this AD, do not install on any helicopter a hose part number A785-31 marked with code 1Q18.
Unsafe condition
This AD was prompted by a report of separation between the outer and inner layers of a hose. This condition, if not addressed, could result in blockage of air flow to the engine, engine stoppage, and subsequent loss of control of the helicopter. The FAA is issuing this AD to prevent the unsafe condition on these helicopters.
Affected ADs
None.
Read the original on the Federal Register →
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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1