AD 2004-15-01 Airworthiness Directives; Raytheon Aircraft Company Model 390 Airplanes

Makes named: raytheon. Models named: 390. Read the applicability below — it usually turns on serial or part numbers too.

(c) This AD affects Model 390 airplanes, serial numbers RB-1, RB-4 through RB-84, RB-87, RB-89, RB-90, RB-93 through RB-96, RB-99 through RB-101, and RB-103; that are certificated in any category:

(e) To address this problem, you must do the following:   Actions Compliance Procedures (1) For serial numbers RB-1, RB-4 through RB-15, RB-17 through RB-80, RB-82, and RB-84, do the following: (i) Inspect the hydraulic tube/hose assemblies and all adjacent components for proper clearance and damage; (ii) Inspect the engine fuel feed tube assemblies and all adjacent components for proper clearance and damage; and (iii) If improper clearance or damage is found during either of the inspections listed in paragraphs (e)(1)(i) and (e)(1)(ii) of this AD, replace the affected hydraulic tube/hose assembly or fuel feed tube assembly Inspect within the next 25 hours time-in-service (TIS) after August 23, 2004 (the effective date of this AD), unless already done. Replace prior to further flight after the inspection where improper clearance or damage is found Follow the procedures in Raytheon Aircraft Company Mandatory Service Bulletin Premier SB 71-3648, dated November, 2003; and Raytheon Aircraft Company Mandatory Service Bulletin Beechcraft SB 71-3659, Rev. 1, dated May, 2004. (2) For serial numbers RB-16, RB-81, RB-83, RB-87, RB-89, RB-90, RB-93 through RB-96, RB-99 through RB-101, and RB-103, do the following: (i) Inspect the engine fuel feed tube assemblies and all adjacent components for proper clearance and damage; and (ii) If improper clearance or damage is found during the inspection listed in paragraph (e)(2)(i) of this AD, replace the affected fuel feed tube assembly Inspect within the next 25 hours time-in-service (TIS) after August 23, 2004 (the effective date of this AD), unless already done. Replace prior to further flight after the inspection where improper clearance or damage is found Follow the procedures in Raytheon Aircraft Company Mandatory Service Bulletin Beechcraft SB 71-3659, Rev. 1, dated May, 2004.

(d) This AD is the result of reports of loss of the hydraulic system functions during different operations caused by improper clearance between certain components. This resulted in damage to the tubing in the hydraulic system assemblies. Analysis shows a similar condition on the engine fuel feed assemblies. We are issuing this AD to detect, correct, and prevent improper clearance in and damage to the components in the hydraulic system assembly, the engine fuel feed tube assemblies, and the engine wire harness. Improper clearance of damaged components could result in failure of one or more of these systems. These failures could lead to loss of hydraulic system operations, engine shutdown, nacelle fire, and false readings for fuel pressure, oil pressure, and other oil indications. These conditions could consequently result in reduced or loss of control of the airplane.