Airworthiness directives › 2018-18-17
AD 2018-18-17 Airworthiness Directives; Saab AB, Saab Aeronautics (Formerly Known as Saab AB, Saab Aerosystems) Airplanes
Models named: SAAB 340B. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to Saab AB, Saab Aeronautics (Type Certificate Previously Held by Saab AB, Saab Aerosystems) airplanes, certificated in any category, as identified in paragraphs (c)(1) and (c)(2) of this AD. (1) Saab AB, Saab Aeronautics Model 340A (SAAB/SF340A) airplanes, serial numbers (S/Ns) 004 through 138 inclusive, on which Saab Modification 1462 has been embodied in production, or Saab Service Bulletin 340-55-008 has been embodied in service, except those on which Saab Modification 1793 has also been embodied in production, or Saab Service Bulletin 340-55-010 has been embodied in service; and Saab AB, Saab Aeronautics Model 340A (SAAB/SF340A) airplanes, S/Ns 139 through 159 inclusive. (2) Saab AB, Saab Aeronautics Model SAAB 340B airplanes, S/Ns 160 through 459 inclusive.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
This paragraph restates the requirements of paragraph (g) of AD 2016-13-06, with no changes. Within 30 days after August 1, 2016 (the effective date of AD 2016-13-06), revise the “Abnormal Procedures” section of the applicable Saab 340 AFM to incorporate the revision specified in paragraphs (g)(1) through (g)(3) of this AD. (1) For Saab AB, Saab Aeronautics Model 340A (SAAB/SF340A) airplanes, revise Saab AFM 340A 001 by incorporating Revision 57, dated March 27, 2015. (2) For Saab AB, Saab Aeronautics Model SAAB 340B airplanes, revise Saab AFM 340B 001 by incorporating Revision 35, dated March 27, 2015. (3) For Saab AB, Saab Aeronautics Model SAAB 340B airplanes with extended wing tips, revise Saab AFM 340B 010 by incorporating Revision 28, dated March 27, 2015.
Unsafe condition
This AD was prompted by reports of ruptured horizontal stabilizer de-icing boots. We are issuing this AD to detect and correct ruptured horizontal stabilizer de-icing boots, which could lead to complete loss of the deicing function within its associated zone and severe vibrations, possibly resulting in reduced control of the airplane.
Affected ADs
This AD replaces AD 2016-13-06, Amendment 39-18570 (81 FR 41432, June 27, 2016) (“AD 2016-13-06”).
Read the original on the Federal Register →
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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