Airworthiness Directive · Amendment 39-14755 · Raytheon Aircraft Company Model 390 Airplanes
Raytheon Aircraft Company Model 390 Airplanes
This AD affects Model 390 airplanes, serial numbers RB-1 and RB-4 through RB-139, that are certificated in any category.
We are adopting a new airworthiness directive (AD) for certain Raytheon Aircraft Company Model 390 airplanes. This AD requires you to inspect the spigot bearing, part number (P/N) MS14104-16, for the proper position in the spigot fitting assembly and to install the wing spigot bearing retainer kit, P/N 390-4304-0001. We are issuing this AD to detect spigot bearings that are not positioned flush with the fitting assembly. This condition could result in the spigot bearing becoming disengaged from the fitting assembly, which could cause motion between the wing and the fuselage and degrade the structural integrity of the wing attachment to the fuselage. This could lead to wing separation and loss of control of the airplane.
To address this problem, you must do the following:
| Actions | Compliance | Procedures |
|---|---|---|
| (1) Inspect to determine whether the spigot bearing, part number (P/N) MS14104-16, is positioned flush inside the spigot fitting assembly and not protruding outside of the fitting assembly | Within 50 hours time-in-service (TIS) after October 13, 2006 (the effective date of this AD), and repetitively inspect thereafter every 50 hours TIS until the installation in paragraph (e)(2) of this AD is done | Follow Raytheon Aircraft Company Mandatory Service Bulletin SB 53-3765, issued: November, 2005. |
| (2) Install the spigot bearing retainer kit, P/N 390-4304-0001. This installation terminates the inspection requirements in paragraph (e)(1) of this AD | At whichever of the following occurs first, unless already done: (i) Before further flight after any inspection required by this AD where the spigot bearing, P/N MS14104-16, is found not to be flush with the spigot fitting assembly; or (ii) Within 200 hours TIS or one calendar year October 13, 2006 (the effective date of this AD), whichever occurs first | Follow Raytheon Aircraft Company Mandatory Service Bulletin SB 53-3765, issued: November, 2005. |
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
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