Airworthiness Directive · Amendment 39-15099 · Hawker Beechcraft Corporation (Type Certificate No. A00010WI Previously Held by Raytheon Aircraft Company) Model 390 Airplanes
Hawker Beechcraft Corporation (Type Certificate No. A00010WI Previously Held by Raytheon Aircraft Company) Model 390 Airplanes
This AD affects the following Model 390 airplanes that are certificated in any category:
(1) Serial numbers RB-1 through RB-49 that have Field Service Kit 390-9100 installed; and
(2) Serial numbers RB-50 through RB-209.
The FAA is adopting a new airworthiness directive (AD) to supersede AD 2006-26-08, which applies to all Hawker Beechcraft Corporation (HBC) Model 390 airplanes. AD 2006-26-08 currently requires you to repetitively inspect the hydraulic pump outlet tube on both engines and immediately replace the tube if damage is found. AD 2006- 26-08 also requires you to incorporate an airplane flight manual (AFM) change that limits operation of an engine with its associated firewall hydraulic shutoff valve closed. If an engine is operated with its firewall hydraulic shutoff valve closed, you must replace the hydraulic pump outlet tube. We issued AD 2006-26-08 as an interim action while we worked with the type certificate holder to develop a design change. HBC has now developed kits that incorporate design changes for the hydraulic pump outlet tubes and dampener supports so this AD retains the actions of AD 2006-26-08 until the new modification kits required by this AD are installed. We continued to receive additional reports of failures of the hydraulic pump outlet tube. 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) until the kits required in paragraph (e)(4) of this AD are incorporated: (A) Within the next 25 hours TIS after December 28, 2006 (the effective date of AD 2006-26-08); 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 until the kits required in paragraph (e)(4) of this AD are incorporated (i) Prior to further flight after any inspection required in 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 shutoff 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 AD 2006-26-08) | 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 change 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). |
| (4) Incorporate Kits No. 390-5804-0001 and 390-5805-0001 | At whichever of the following that occurs first: (i) Within the next 25 hours TIS after June 20, 2007 (the effective date of this AD); or (ii) Within the next 45 days after June 20, 2007 (the effective date of this AD. | Follow the instructions in the documents presented below as referenced in Hawker Beechcraft Mandatory Service Bulletin 29-3800, Issued May, 2007: (i) Raytheon Aircraft Company Kit—Dampener Support Improvement, Drawing No. 390-5804 (Kit 390-5804-0001 Field Service Kit). (ii) Raytheon Aircraft Company Kit—Hydraulic Pump Pressure Hose Installation No. 390-5805 (Kit 390-5805-0001 Field Service Kit). |
(f) After the actions required in paragraph (e)(4) of this AD are done:
(1) the repetitive inspections and replacement of paragraphs (e)(1) and (e)(2) of this AD are no longer required.
(2) the requirement in paragraph (e)(3) of this AD to incorporate Raytheon Aircraft Company Part Number 390-590001-0003C3TC6, dated September 16, 2006, into the AFM remains valid.
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
