AD 99-14-07 Airworthiness Directives; Dassault Model 2000, 900EX, and Mystere Falcon 900 Series Airplanes

Models named: Falcon 2000 series. Read the applicability below — it usually turns on serial or part numbers too.

All Model Falcon 2000 series airplanes; Falcon 900EX series airplanes, serial numbers 04 and subsequent; and Mystere Falcon 900 series airplanes, serial numbers 161 and subsequent; certificated in any category. Note 1: This AD applies to each airplane identified in the preceding applicability provision, regardless of whether it has been modified, altered, or repaired in the area subject to the requirements of this AD. For airplanes that have been modified, altered, or repaired so that the performance of the requirements of this AD is affected, the owner/operator must request approval for an alternative method of compliance in accordance with paragraph (d) of this AD. The request should include an assessment of the effect of the modification, alteration, or repair on the unsafe condition addressed by this AD; and, if the unsafe condition has not been eliminated, the request should include specific proposed actions to address it.

Required as indicated, unless accomplished previously. To prevent jamming of the flap jackscrews, which could result in inability to move the flaps or an asymmetric flap condition, and consequent reduced controllability of the airplane, accomplish the following: Repetitive Operational Test (a) Within 5 flight cycles after the effective date of this AD: Perform an operational test of the flap asymmetry detection system to ensure that the system is functioning correctly, in accordance with the procedures specified in Falcon 2000 Airplane Maintenance Manual (AMM) 27-502, dated November 1995; Falcon 900 AMM 27-502, dated January 1995; or Falcon 900EX AMM 27-502, dated September 1996, as applicable. Prior to further flight, repair any discrepancy detected in accordance with a method approved by the Manager, International Branch, ANM-116, FAA, Transport Airplane Directorate; or the Direction Generale de l'Aviation Civile (or its delegated agent). Repeat the operational test thereafter at intervals not to exceed 330 flight hours or 7 months, whichever occurs first. Repetitive Replacement (b) Prior to the accumulation of 1,000 total flight cycles on the inboard flap jackscrews, or within 25 flight cycles after the effective date of this AD, whichever occurs later: Replace the inboard flap jackscrews with new jackscrews in accordance with the procedures specified in Falcon 2000 AMM 27-510, dated November 1995; Falcon 900 AMM 27-521, dated December 1998; or Falcon 900EX AMM 27- 510, dated September 1996, as applicable. Repeat the replacement thereafter at intervals not to exceed 1,000 flight cycles. Repetitive Inspection (c) Prior to the accumulation of 1,000 total flight cycles on the outboard and center flap jackscrews, or within 25 flight cycles after the effective date of this AD, whichever occurs later: Measure the screw/nut play of the outboard and center flap jackscrews to detect discrepancies, in accordance with the procedures specified in Falcon 2000 AMM, Temporary Revision (TR) 27-504, dated October 1998; Falcon 900 AMM, TR 27-514, dated February 1999; or Falcon 900EX AMM, TR 27-514, dated February 1999, as applicable. Note 2: The AMM revisions required by paragraph (c) of this AD may be accomplished by inserting a copy of the TR's into the applicable AMM. When these TR's have been incorporated into the general revisions of the AMM, the general revisions may be inserted into the AMM, provided that the information contained in the general revisions is identical to that specified in the TR's. (1) If the measurement is greater than 0.014 inch, prior to further flight, replace the discrepant flap jackscrew with a new jackscrew in accordance with the procedures specified in Falcon 2000 AMM 27-510, dated November 1995; Falcon 900 AMM 27-521, dated December 1998; or Falcon 900EX AMM 27-510, dated September 1996, as applicable. Repeat the inspection thereafter at intervals not to exceed 330 flight hours or 7 months, whichever occurs first. (2) If the measurement is less than or equal to 0.014 inch, repeat the measurement [[Page 36563]] thereafter at intervals not to exceed 330 flight hours or 7 months, whichever occurs first. Alternative Methods of Compliance (d) An alternative method of compliance or adjustment of the compliance time that provides an acceptable level of safety may be used if approved by the Manager, International Branch, ANM-116. Operators shall submit their requests through an appropriate FAA Principal Maintenance Inspector, who may add comments and then send it to the Manager, International Branch, ANM-116. Note 3: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the International Branch, ANM-116. Special Flight Permits (e) Special flight permits may be issued in accordance with Secs. 21.197 and 21.199 of the Federal Aviation Regulations (14 CFR 21.197 and 21.199) to operate the airplane to a location where the requirements of this AD can be accomplished. Note 4: The subject of this AD is addressed in French airworthiness directives 1999-038-008(B), dated January 27, 1999 (for Falcon 2000 series airplanes); and 1999-082-024(B) dated February 24, 1999 (for Falcon 900 and Mystere Falcon 900EX series airplanes). (f) This amendment becomes effective on August 11, 1999. Issued in Renton, Washington, on June 29, 1999. D.L. Riggin, Acting Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 99-17061 Filed 7-6-99; 8:45 am] BILLING CODE 4910-13-P