Airworthiness Directive · Amendment 39-15217 · 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 applies to Model 390 airplanes, serial numbers RB-1 and RB-4 through RB-149, that are certificated in any category.
We are adopting a new airworthiness directive (AD) for certain Hawker Beechcraft Corporation Model 390 airplanes. This AD requires you to inspect the starter-generator to determine the serial number (S/N) and suffix letter, which indicates if the part is improperly shimmed. This AD also requires you to replace any improperly shimmed starter- generator with a properly shimmed starter-generator. This AD results from reports of a manufacturing error where certain starter-generators may have been improperly shimmed. We are issuing this AD to detect and correct improperly shimmed starter-generators, which could result in premature starter-generator failure. This failure could lead to increased chances of dual starter-generator failure on the same flight.
To address this problem, you must do the following, unless already done:
| Actions | Compliance | Procedures |
|---|---|---|
| (1) Inspect the left-hand and right-hand starter-generators, Raytheon Aircraft Company (RAC) part number (P/N) 390-389001-0001 or Advance Industries, Inc. (AI) P/N MG94A-1, to determine the serial number and suffix letter as specified in paragraph 3.A.(2) of RAC Mandatory Service Bulletin SB 24-3790, Issued: August, 2006 | Within the next 50 hours time-in-service (TIS) after November 7, 2007 (the effective date of this AD) or within the next 3 months after November 7, 2007 (the effective date of this AD), whichever occurs first | Follow RAC Mandatory Service Bulletin SB 24-3790, Issued: August, 2006. |
| (2) If any starter-generator(s) specified in paragraph 3.A.(2) of RAC Mandatory Service Bulletin SB 24-3790, Issued: August, 2006, is/are found during the inspection required in paragraph (e)(1) of this AD, replace that starter-generator with a properly shimmed starter-generator | As follows: (i) If both starter-generators are identified as being improperly shimmed, replace at least one within 10 hours TIS after the inspection required in paragraph (e)(1) of this AD. Replace the other within the next 200 hours TIS after November 7, 2007 (the effective date of this AD) or within the next 12 months after November 7, 2007 (the effective date of this AD), whichever occurs first (ii) If one starter-generator is identified as being improperly shimmed, replace it within the next 200 hours TIS after November 7, 2007 (the effective date of this AD) or within the next 12 months after November 7, 2007 (the effective date of this AD), whichever occurs first | Follow RAC Mandatory Service Bulletin SB 24-3790, Issued: August, 2006. |
| (3) If a starter-generator specified in paragraph 3.A.(2) of RAC Mandatory Service Bulletin SB 24-3790, Issued: August, 2006, is not found during the inspection required in paragraph (e)(1) of this AD, no further action is required | Not applicable | Follow RAC Mandatory Service Bulletin SB 24-3790, Issued: August, 2006. |
| (4) Do not install on any airplane any RAC P/N 390-389001-0001 or AI P/N MG94A-1 that is specified in paragraph 3.A.(2) of RAC Mandatory Service Bulletin SB 24-3790, Issued: August, 2006 | Before further flight after the inspection required in paragraph (e)(1) of this AD | Follow RAC Mandatory Service Bulletin SB 24-3790, Issued: August, 2006. |
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
