Airworthiness Directive · Amendment 39-15620 · Hawker Beechcraft Corporation Model 390 Airplanes
Hawker Beechcraft Corporation Model 390 Airplanes
This AD applies to Model 390 airplanes, serial numbers RB-4 through RB-204, 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 repetitively do a post-flight check (owner/operator holding at least a private pilot certificate checking for residual heat in the angle-of- attack (AOA) probes or an appropriately-rated mechanic doing a maintenance manual operational test of the heat of the AOA probes) after every flight and replace or modify (upload software) the stall warning AOA transmitters. This AD results from reports of the potential for unannunciated loss of the heating function in the left-hand (LH) and right-hand (RH) stall warning AOA transmitters of Model 390 airplanes. We are issuing this AD to correct potentially inadequate stall warning with loss of stick pusher function.
To address this problem, you must do the following, unless already done:
| Actions | Compliance | Procedures |
|---|---|---|
| (1) Incorporate Raytheon Aircraft Company Temporary Change to the FAA Approved Airplane Flight Manual P/N 390-590001-0003CTC7, issued: March 15, 2007, into the airplane flight manual (AFM). | Within 15 hours time-in-service (TIS) after September 3, 2008 (the effective date of the AD) or within 30 days after September 3, 2008 (the effective date of the AD), whichever occurs first. | Not Applicable. |
| (2) After every flight do the following: (i) Do a post-flight check for residual heat in the AOA probes. CAUTION: TO PREVENT POSSIBLE BURNS, USE EXTREME CAUTION TOUCHING HEATED AREAS. TO CHECK HEATING AND AVOID BURNS, HOLD HAND NEAR HEATED AREA OR MOVE HAND GRADUALLY FROM AMBIENT AREA TOWARD HEATED AREA UNTIL WARMTH CAN BE FELT. If you do not feel heat in the AOA probes, then do paragraph (e)(2)(ii) of this AD; or (ii) Do a post-flight maintenance manual operational test of the heat of the AOA probes. If the AOA probe fails the operational test, replace the AOA probe. | Begin the post-flight checks within 15 hours TIS after September 3, 2008 (the effective date of the AD) or within 30 days after September 3, 2008 (the effective date of the AD), whichever occurs first. Completion of paragraph (e)(3)(i) or (e)(3)(ii) of this AD terminates the required repetitive post-flight checks of this AD. Replace any AOA probe that fails the operational test before further flight. | (A) For the post-flight check for residual heat in the AOA probes: Follow Raytheon Aircraft Company Temporary Change to the FAA Approved Airplane Flight Manual Temporary Change P/N 390-590001-0003CTC7, issued: March 15, 2007. 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 this post-flight check required by paragraph (e)(2)(i) of this AD. Make an entry into the aircraft records showing compliance with this AD following section 43.9 of the Federal Aviation Regulations (14 CFR 43.9). (B) For the post-flight maintenance manual operational test of the heat of the AOA probes: Follow Raytheon Aircraft Company Temporary Change to the FAA Approved Airplane Flight Manual Temporary Change P/N 390-590001-0003CTC7, issued: March 15, 2007, and Hawker Beechcraft Mandatory Service Bulletin No. SB 27-3787, issued: May 2007. The maintenance manual operational test must be done by an appropriately rated mechanic. |
| (C) For AOA probe replacement: Follow Hawker Beechcraft Mandatory Service Bulletin No. SB 27-3787, issued: May 2007. | ||
| (3) Replace or modify (upload software) the stall warning AOA transmitters by doing one of the following: (i) Upload new software Kit No. 123-3436 (Field Software Upload SLZ8060-3,-4) to the AOA transmitters; or (ii) Replace any part number (P/N) SLZ8060-3 and/or P/N SLZ8060-4 AOA transmitters with new P/N SLZ8060-5 AOA transmitters. | Within 250 hours TIS after September 3, 2008 (the effective date of this AD) or within 12 months after September 3, 2008 (the effective date of this AD), whichever occurs first. Completion of either paragraph (e)(3)(i) or (e)(3)(ii) of this AD terminates the required repetitive post-flight check of this AD. | Follow Hawker Beechcraft Mandatory Service Bulletin No. SB 27-3787, issued: May 2007. |
| (4) Remove Raytheon Aircraft Company Temporary Change to the FAA Approved Airplane Flight Manual P/N 390-590001-0003CTC7, issued: March 15, 2007, from the AFM. | Before further flight after doing the actions required by paragraph (e)(3)(i) or paragraph (e)(3)(ii) of this AD. | Follow Hawker Beechcraft Mandatory Service Bulletin No. SB 27-3787, issued: May 2007. |
| (5) Do not install any P/N SLZ8060-3 or P/N SLZ8060-4 AOA transmitter that does not have the new upgraded software required by paragraph (e)(3)(i) of this AD. | As of September 3, 2008 (the effective date of this AD). | Not Applicable. |
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
