Airworthiness Directive · Amendment 39-14663 · Raytheon Aircraft Company 65, 90, 99, and 100 Series Airplanes
Raytheon Aircraft Company 65, 90, 99, and 100 Series Airplanes
This AD affects the following airplane models and serial numbers that are certificated in any category:
(1) Group 1 (maintains the actions from AD 92-07-05):
| Model | Serial Nos. |
|---|---|
| (i) 65-90, 65-A90, B90, C90, and C90A | LJ-1 through LJ-1280. |
| (ii) E90 | LW-1 through LW-347. |
| (iii) 99, 99A, A99, A99A, B99, and C99 | U-1 through U-136 and U-146 through U-239. |
| (iv) 100 and A100 | B1 through B-94, B-100 through B-204, and B-206 through B247. |
| (v) B100 | BE-1 through BE-137. |
| (vi) 65-A90-1 (U-21A, JU-21A, RU-21D, RU-21H, RU-21A, U-21G) | LM-1 through LM-141. |
| (vii) 65-A90-2 (RU-21B) | LS-1, LS-2, and LS-3. |
| (viii) 65-A90-3 (RU-21C) | LT-1 and LT-2. |
| (ix) 65-A90-4 (RU-21EA, U-21H, RU-21H) | LU-1 through LU-16. |
| (x) H90 (T-44A) | LL-1 through LL-61. |
| (xi) 99A (FACH) | U-137 through U-145. |
| (xii) A100 (U-21F) | B95 through B-99. |
(2) Group 2: Model C90A, serial numbers LJ-1281 through LJ-1732.
We are adopting a new airworthiness directive (AD) that supersedes AD 92-07-05, which applies to certain Raytheon Aircraft Company (Raytheon) (formerly Beech) 65, 90, 99, and 100 series airplanes. AD 92-07-05 currently requires you to inspect the rudder trim tab for proper moisture drainage provisions, and if the correct drainage provisions do not exist, before further flight, modify the rudder trim tab. This AD results from receiving and evaluating new service information that requires the actions of AD 92-07-05 for the added serial numbers LJ-1281 through LJ-1732 for the Model C90A airplanes. This AD retains all the actions of AD 92-07-05 and adds serial numbers LJ-1281 through LJ-1732 for the Model C90A airplanes in the applicability section. We are issuing this AD to prevent water accumulation in the rudder trim tab, which could result in a change in the mass properties and possibly a lower flutter speed of the airplane. A lower airplane flutter speed could result in failure and loss of control of the airplane.
To address this problem, you must do the following:
| Actions | Compliance | Procedures |
|---|---|---|
| (1) For Group 1 Airplanes: Inspect the rudder trim tab for proper moisture drainage provisions | Within 150 hours time-in-service (TIS) after April 30, 1992 (the effective date of AD 92-07-05), unless already done | Follow Beech Service Bulletin No. 2365, Revision 1, dated December 1991. |
| (2) For Group 1 Airplanes: If the correct drainage provisions do not exist, modify the rudder trim tab | Before further flight after the inspection required by paragraph (e)(1) of this AD | Follow Beech Service Bulletin No. 2365, Revision 1, dated December 1991. |
| (3) For Group 2 Airplanes: Inspect the rudder trim tab for proper moisture drainage provisions | Within 150 hours TIS after August 7, 2006 (the effective date of this AD), unless already done | Follow Raytheon Aircraft Company Service Bulletin No. SB 55-2365, Revision 2, Issued: January 1991, Revised: October 2005. |
| (4) For Group 2 Airplanes: If the correct drainage provisions do not exist, modify the rudder trim tab | Before further flight after the inspection required by paragraph (e)(3) of this AD | Follow Raytheon Aircraft Company Service Bulletin No. SB 55-2365, Revision 2, Issued: January 1991, Revised: October 2005. |
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.
