AD 2019-07-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Robinson | Helicopter Company | Airworthiness Directives; Robinson Helicopter Company Helicopters |
Unsafe Condition
broken baffle inside an oil tank, which could result in loss of oil pressure and oil flow to the engine, leading to engine failure and subsequent forced landing of the helicopter.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Within 100 hours time-in-service: (1) Visually inspect the oil tank outlet fitting color to determine if it is blue. If the fitting is blue, before further flight, replace the tank with an oil tank that does not have a blue fitting. (2) Locate the G689-1 oil tank assembly identification ink stamp on the top surface of the oil tank, and determine the revision letter. (i) If the identification ink stamp is followed by a revision letter F, G, H, or I unless previously installed, install a G805-1 angle as follows: (A) Drain the engine oil and disconnect the F723-1 line assembly from the tank fitting at the firewall, using as reference Figure 1 of Robinson Helicopter Company R66 Service Bulletin SB-21A, Revision A, dated June 6, 2017. (B) Pinch the flanges of G805-1 angle at the minimum required to enable insertion, and insert the angle in the oil tank outlet fitting until the angle snaps in place. (C) Connect the F723-1 line assembly to the tank fitting. Special torque nut to 675 in.-lb. Torque stripe the fitting. (ii) If the identification ink stamp is followed by a revision letter J, determine if there is a yellow dot near the ink stamp. A yellow dot indicates that the angle has been pre-installed and that no further action is required by this AD. If there is not a yellow dot near the ink stamp, install a G805-1 angle by following the procedures in paragraphs (e)(2)(i)(A) through (e)(2)(i)(C) of this AD. (iii) If the identification ink stamp is followed by a revision letter K, no further action is required by this AD.
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Compliance Time
Within 100 hours time-in-service
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Affected Aircraft
Robinson Helicopter Company Model R66 helicopters, serial numbers 0003 through 0789, 0791, 0794 and 0796, certificated in any category.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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