Airworthiness directives › 2004-03-03
AD 2004-03-03 Airworthiness Directives; Fokker Model F.28 Mark 0070 and 0100 Series Airplanes
Models named: F.28 Mark 0070, 0100 series. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
Model F.28 Mark 0070 and 0100 series airplanes; certificated in any category; equipped with Rolls-Royce Tay620 or Tay650 series engines and having incorporated Rolls-Royce Service Bulletin Tay 72-1326, Revision 1, dated January 16, 1998.
Compliance
Required as indicated, unless accomplished previously. To ensure that the flightcrew is aware of the procedures required to prevent ice from contacting the ice impact panels on the engine fan case, which could result in a panel coming loose during flight and blocking the bypass flow through the engine outlet guide vanes, and consequent reduction of the engine thrust, resulting in insufficient thrust to maintain flight, accomplish the following: Airplane Flight Manual (AFM) Revision (a) Within 7 days after the effective date of this AD: Revise the Normal Procedures Section, “Operation in Icing Conditions,” and the Limitations Section, “Weather Limitations,” by inserting the procedures specified in Appendix 1 of this AD into the applicable AFM. Thereafter, operate the airplane per the procedures specified in the AFM revision. Note 1: When procedures identical to those in Appendix 1 of this AD have been incorporated into the general revisions of the AFM, the general revisions may be incorporated into the AFM, and Appendix 1 of this AD may be removed from the AFM. Alternative Methods of Compliance (b) In accordance with 14 CFR 39.19, the Manager, International Branch, ANM-116, Transport Airplane Directorate, FAA, is authorized to approve alternative methods of compliance for this AD. Note 2: The subject of this AD is addressed in Dutch airworthiness directive 2004-004, dated January 15, 2004. Effective Date (c) This amendment becomes effective on February 18, 2004. APPENDIX 1. “(a) Engine anti-icing must be switched ON during all ground or flight operations when the Total Air Temperature (TAT) is below +6 degrees C (+42 degrees F) down to and including −25 degrees C (−13 degrees F), irrespective of the presence of visible moisture; and (b) Airframe anti-icing system must be switched ON during flight operations whenever any of the following conditions is valid: (1) Icing conditions are anticipated or present; In-flight, icing conditions are present when TAT is below +6 degrees C (+42 degrees F) down to an including −25 degrees C (−13 degrees F) and visible moisture is present. (2) Ice buildup is observed; (3) The ICING alert comes on.” Issued in Renton, Washington, on January 28, 2004. Kalene C. Yanamura, Acting Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 04-2106 Filed 2-2-04; 8:45 am] BILLING CODE 4910-13-P
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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1