AD 2001-16-10 Airworthiness Directives; Aerospatiale Model ATR42-200, -300, -320, and -500 Series Airplanes; and Model ATR72 Series Airplanes

Models named: ATR72 series. Read the applicability below — it usually turns on serial or part numbers too.

All Model ATR42-200, -300, -320, and “500 series airplanes; and all Model ATR72 series airplanes; certificated in any category.

Required as indicated, unless accomplished previously. To ensure that the flight crew is advised of the potential effects of Type II or IV de-icing or anti-icing fluids on the airplane's performance during takeoff, and to ensure that the flight crew is advised of the revised performance calculations for takeoff to address these effects, accomplish the following: Revision of the Airplane Flight Manual (AFM) (a) Within 15 days after the effective date of this AD, revise the Appendices and Supplements chapter of the FAA-approved AFM by including either the following manufacturer's Appendix “Takeoff after use of Fluid Type II or IV” or a copy of this AD in the AFM. “Takeoff After Use of Fluid Type II or IV This appendix applies only to aircraft de-iced or anti-iced before takeoff, using fluid Type II or IV. These types of fluid may lead to an increase in control forces necessary to rotate, and then to a modification of takeoff performance. Therefore, this flight manual must be modified as follows: 1. General The general information in Section 1 is applicable. 2. Limitations The limitations in Section 2 are applicable. 3. Normal Procedures The normal procedures in Section 3 are applicable. 4. Emergency Procedures The emergency procedures in Section 4 are applicable. 5. Procedures Following Failures The procedures following failures in Section 5 are applicable. 6. Performances The performances in Section 6 for dry runways and in Section 7.03 for non-dry runways (advisory materials) are applicable with the addition of the following for takeoff computations: —Determine VR for the lowest available V2, —Assume V1=VR, —Increase TOR, TOD, ASD by 20%. 7. Appendices and Supplements Data of Section 7 are applicable by adding what follows: For the dispatch cases: —Apply takeoff penalties due to the system failure, —Then apply takeoff penalties due to the use of fluids Type II or IV. Dispatch is not authorized in the following cases: —Ferry flight with pitch elevators disconnected, —Takeoff with flaps retracted.” Alternative Methods of Compliance (b) 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, Transport Airplane Directorate, FAA. 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 1: 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 (c) Special flight permits may be issued in accordance with sections 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 2: The subject of this AD is addressed in French airworthiness directives 2000-449-082(B) and 2000-448-053(B), both dated October 31, 2000. Effective Date (d) This amendment becomes effective on September 26, 2001. Issued in Renton, Washington, on August 15, 2001. Vi L. Lipski, Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 01-21102 Filed 8-21-01; 8:45 am] BILLING CODE 4910-13-P