Airworthiness Directive · Amendment 39-18596 · Flight controls
Dassault Aviation Airplanes
This AD applies to all Dassault Aviation Model FALCON 900EX and FALCON 2000EX airplanes, certificated in any category.
We are adopting a new airworthiness directive (AD) for all Dassault Aviation Model FALCON 900EX and FALCON 2000EX airplanes. This AD was prompted by a review that identified a nonconformity between the torque value applied to the screw-nuts of aileron servo actuators, and the torque value specified by the type design. This AD requires replacing certain aileron servo actuators with serviceable servo actuators. We are issuing this AD to prevent desynchronization between two servo actuator barrels, which could lead to reduced control of the airplane during roll maneuvers at low altitude.
At the later of the applicable times specified in paragraphs (g)(1) and (g)(2) of this AD: Replace each affected aileron servo actuator, as identified in figure 1 to paragraph (g) of this AD (for Model FALCON 900EX airplanes) or figure 2 to paragraph (g) of this AD (for Model FALCON 2000EX airplanes), with a serviceable part in accordance with the Accomplishment Instructions of Dassault Service Bulletin F900EX-476, Revision 1, dated June 25, 2014; or Dassault Service Bulletin F2000EX-350, dated April 9, 2014; except where Dassault Service Bulletin F900EX-476, Revision 1, dated June 25, 2014; or F2000EX-350, dated April 9, 2014; specify to “remove” the applicable aileron servo actuator, this AD requires replacement of the applicable aileron servo actuator. A serviceable part is one that is specified in the “New P/N” column in the table of paragraph 3., “Material Information,” of Dassault Service Bulletin F900EX-476, Revision 1, dated June 25, 2014; or Dassault Service Bulletin F2000EX-350, dated April 9, 2014.
(1) For airplanes on which the aileron servo actuator was not replaced during maintenance: At the later of the times specified in paragraphs (g)(1)(i) and (g)(1)(ii) of this AD.
(i) Within 25 months or 1,640 flight hours, whichever occurs first, since the date of issuance of the original airworthiness certificate or date of issuance for the original export certificate of airworthiness.
(ii) Within 30 days after the effective date of this AD.
(2) For airplanes on which the aileron servo actuator was replaced during maintenance: At the later of the times specified in paragraphs (g)(2)(i) and (g)(2)(ii) of this AD.
(i) Within 1,640 flight hours after replacement of the aileron servo actuator during maintenance.
(ii) Within 30 days after the effective date of this AD.
Note 1 to paragraph (g) of this AD: The affected aileron servo actuators are known to be installed before airplane delivery on Model FALCON 900EX airplanes having serial numbers (S/Ns) 265 through 270 inclusive, S/N 272 and S/N 273; Model FALCON 2000EX airplanes having S/N 243, S/Ns 246 through 258 inclusive, S/Ns 260 through 263 inclusive, S/Ns 702 through 710 inclusive and S/N 714; and during a maintenance operation on Model FALCON 900EX airplane having S/N 177, after airplane delivery.
| Model FALCON 900EX airplane having S/N— | With actuator part number (P/N)— | And actuator S/N— |
|---|---|---|
| 177 | 103117-06 | 5003 |
| 265 | 103117-06 | 5002 |
| 266 | 103117-05 | 5000 |
| 103117-06 | 5007 | |
| 267 | 103117-05 | 5001 |
| 268 | 103117-05 | 5004 |
| 269 | 103117-05 | 5005 |
| 103117-06 | 5011 | |
| 270 | 103117-06 | 5012 |
| 103117-13 | 5017 | |
| 272 | 103117-05 | 5010 |
| 103117-14 | 5016 | |
| 273 | 103117-13 | 5014 |
| 103117-14 | 5020 |
| Model FALCON 2000EX airplane having S/N— | With actuator P/N— | And actuator S/N— |
|---|---|---|
| 243 | 103151-08 | 5002 |
| 246 | 103151-07 103151-08 | 5000 5003 |
| 247 | 103151-07 103151-08 | 5001 5006 |
| 248 | 103151-07 103151-08 | 5004 5007 |
| 249 | 103151-07 103151-08 | 5005 5012 |
| 250 | 103151-07 103151-08 | 5008 5013 |
| 251 | 103151-07 103151-08 | 5009 5014 |
| 252 | 103151-07 103151-08 | 5011 5016 |
| 253 | 103151-07 103151-08 | 5010 5015 |
| 254 | 103151-08 103151-07 | 5017 5018 |
| 255 | 103151-07 103151-08 | 5019 5022 |
| 256 | 103151-07 103151-08 | 5021 5023 |
| 257 | 103151-08 103151-07 | 5024 5026 |
| 258 | 103151-07 103151-08 | 5027 5033 |
| 260 | 103151-08 103151-07 | 5032 5035 |
| 261 | 103151-08 103151-07 | 5037 5041 |
| 262 | 103151-08 103151-07 | 5039 5047 |
| 263 | 103151-08 103151-09 | 5044 5064 |
| 702 | 103151-07 | 5029 |
| 703 | 103151-07 103151-08 | 5034 5042 |
| 704 | 103151-08 103151-07 | 5036 5040 |
| 705 | 103151-08 103151-07 | 5038 5046 |
| 706 | 103151-08 103151-07 | 5043 5048 |
| 707 | 103151-07 103151-08 | 5054 5057 |
| 708 | 103151-08 103151-07 | 5045 5050 |
| 709 | 103151-08 | 5074 |
| 710 | 103151-07 103151-08 | 5051 5053 |
| 714 | 103151-09 103151-10 | 5065 5067 |
As of the effective date of this AD, no aileron servo actuator having a P/N and S/N listed in figure 1 to paragraph (g) of this AD or figure 2 to paragraph (g) of this AD is allowed to be installed on any airplane, unless the mark “D1” is included on the actuator repair placard.
Note 2 to paragraph (h) of this AD: The mark “D1” on an aileron servo actuator repair placard indicates that the affected part has been refurbished by an approved maintenance organization and is qualified as a serviceable part.
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.
