Airworthiness Directive · Amendment 39-14866 · Raytheon Aircraft Company Model 390 Airplanes
Raytheon Aircraft Company Model 390 Airplanes
Superseded. A later AD replaced this one: AD 2007-12-21. Comply with the one in force.
This AD applies to Model 390 airplanes, all serial numbers, that are certificated in any category:
The FAA is adopting a new airworthiness directive (AD) to supersede AD 2006-02-51, which applies to certain Raytheon Aircraft Company Model 390 airplanes. AD 2006-02-51 currently requires you to inspect the left engine hydraulic pump outlet tube and the clamp; replace the clamp at each inspection; replace the hydraulic pump outlet tube immediately if any problem is found; and report the results of each inspection or replacement to the FAA. This AD is the result of several hydraulic pump outlet tube failures after issuance of AD 2006- 02-51, including failures on the right engine. This AD requires you to visually inspect the hydraulic pump outlet tube on both engines on a recurring basis and immediately replace the tube if damage is found. This AD also requires incorporation of an Airplane Flight Manual (AFM) change to not allow operation of an engine with its associated firewall hydraulic shutoff valve closed. In addition, this AD requires you to replace the hydraulic pump outlet tube if an engine is operated with its firewall hydraulic shutoff valve closed. We are issuing this AD to prevent failure of the hydraulic pump outlet tube and consequent leaking of hydraulic fluid. Such leakage could result in a fire. There is also a risk of loss of hydraulic system functions including normal gear extensions, speed brakes, roll spoilers, lift dump, and normal brakes.
To address this problem, you must do the following, unless already done:
| Actions | Compliance | Procedures |
|---|---|---|
| (1) Visually inspect the hydraulic pump outlet tube for evidence of chafing, excessive vibration, wear, deterioration, or hydraulic fluid leakage, as follows: (i) For the left-hand (LH) engine: Remove the clamp, perform the inspection, and replace the clamp with a new one as specified in Raytheon Mandatory Service Bulletin No. SB 29-3771 after each inspection (ii) For the right-hand (RH) engine: Perform the inspection. Removal and replacement of the clamps are not necessary | Initially at whichever of the following occurs first and thereafter at intervals not to exceed 25 hours time-in-service (TIS): (A) Within the next 25 hours TIS after December 28, 2006 (the effective date of this AD); or (B) At the next inspection required by AD 2006-02-51 | Inspect following Raytheon Safety Communique No. 267, dated January 2006. Raytheon Safety Communique No. 267, dated January 2006, addresses the LH engine. Use the same inspection procedures for the RH engine hydraulic pump outlet tube (P/N 390-580037). Remove and replace the clamp (LH only) following Raytheon Mandatory Service Bulletin No. SB 29-3771, dated January 2006. |
| (2) Replace the hydraulic pump outlet tube, Part Number (P/N) 390-580035 (or FAA-approved equivalent) for the LH engine or P/N 390-580037 (or FAA-approved equivalent) for the RH engine | Each and every time any of the following occurs: (i) Prior to further flight after any inspection from paragraph (e)(1) of this AD where evidence of chafing, excessive vibration, wear, deterioration, or hydraulic fluid leakage is found; and (ii) Within 1 hour TIS following identification of an intended or unintended engine operation with the hydraulic valve closed. | Raytheon Aircraft Premier 1 Model 390 Maintenance Manual, P/N 390-590001-0015. |
| (3) Incorporate Raytheon Aircraft Company Part Number 390-590001-0003C3TC6, dated September 16, 2006 into the Airplane Flight Manual (AFM) | Within 5 days after December 28, 2006 (the effective date of this AD) | The owner/operator holding at least a private pilot certificate as authorized by section 43.7 of the Federal Aviation Regulations (14 CFR 43.7) may do the AFM changes requirement of this AD. Make an entry into the aircraft records showing compliance with this portion of the AD in accordance with section 43.9 of the Federal Aviation Regulations (14 CFR 43.9). |
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.
Aircraft
