Airworthiness Directive · Amendment 39-19295 · Flight controls
Saab AB, Saab Aeronautics (Formerly Known as Saab AB, Saab Aerosystems) Airplanes
Superseded. A later AD replaced this one: AD 2018-25-10. Comply with the one in force.
This AD applies to Saab AB, Saab Aeronautics (formerly known as Saab AB, Saab Aerosystems) Model SAAB 2000 airplanes, certificated in any category, all manufacturer serial numbers.
We are adopting a new airworthiness directive (AD) for all Saab AB, Saab Aeronautics Model SAAB 2000 airplanes. This AD requires a one-time inspection of the aileron bellcrank support brackets and a thickness measurement of the affected lug attaching the support bracket; repetitive inspections of the affected aileron bellcrank support brackets; and corrective actions if necessary. This AD also provides an optional terminating action for the repetitive inspections. This AD was prompted by the identification of a manufacturing defect on certain aileron bellcrank support brackets that resulted in the material thickness of the affected lug attaching the support bracket to the rear spar of the wing to be insufficient. We are issuing this AD to address the unsafe condition on these products.
(1) For the purposes of this AD, affected support brackets are aileron bellcrank support brackets, part number (P/N) 7327993-813 and P/N 7327993-814, for which it has been determined that the affected lug attaching the support bracket to the rear spar of the wing has a thickness of less than 2.75 mm (0.108 in.), as specified in Saab Service Bulletin 2000-27-056, dated April 18, 2018.
(2) For the purposes of this AD, serviceable support brackets are aileron bellcrank support brackets, P/N 7327993-813 and P/N 7327993-814, for which it has been determined that the affected lug attaching the support bracket to the rear spar of the wing has a thickness of 2.75 mm (0.108 in.) or more, as specified in Saab Service Bulletin 2000-27-056, dated April 18, 2018.
Within 100 flight cycles or 30 days, whichever occurs first after the effective date of this AD, accomplish a detailed visual inspection for cracks, corrosion, and damage (including missing paint) of the affected lug and the adjacent area of the aileron bellcrank support brackets installed on the left hand (LH) and right hand (RH) wing, and measure the thickness of the affected lug attaching the support bracket to the rear spar of the wing, in accordance with the Accomplishment Instructions of Saab Service Bulletin 2000-27-056, dated April 18, 2018.
If, during the measurement required by paragraph (h) of this AD, it is determined that the affected lug attaching the aileron bellcrank support bracket to the rear spar of the wing has a thickness of less than 2.75 mm (0.108 in.), at intervals not to exceed 100 flight cycles, accomplish a detailed visual inspection for cracks, corrosion, and damage (including missing paint) of that affected support bracket in accordance with the Accomplishment Instructions of Saab Service Bulletin 2000-27-056, dated April 18, 2018. Accomplishing the replacement specified in paragraph (k) of this AD terminates the repetitive inspections required by this paragraph for that bracket.
If, during any inspection required by paragraph (h) or (i) of this AD, any crack, corrosion, or damage (including missing paint) is found, before further flight, obtain corrective actions instructions approved by the Manager, International Section, Transport Standards Branch, FAA; or the European Aviation Safety Agency (EASA); or Saab AB, Saab Aeronautics' EASA Design Organization Approval (DOA). If approved by the DOA, the approval must include the DOA-authorized signature. Accomplish the corrective actions within the compliance time specified therein. If no compliance time is specified in the corrective actions instructions, accomplish the corrective action before further flight.
Replacing each affected support bracket with a serviceable support bracket, in accordance with the Accomplishment Instructions of Saab Service Bulletin 2000-27-056, dated April 18, 2018, terminates the inspections required by paragraph (i) of this AD for that airplane.
Within 15 days after the measurement as required by paragraph (h) of this AD, or within 15 days after the effective date of this AD, whichever occurs later, report the results to Saab AB, Saab Aeronautics in accordance with the instruction provided in Figure 1, “Aileron Bellcrank Support Fitting—Inspection,” of Saab Service Bulletin 2000-27-056, dated April 18, 2018.
As of the effective date of this AD, it is allowed to install on any airplane an aileron bellcrank support bracket P/N 7327993-813 or P/N 7327993-814, provided it is a serviceable support bracket.
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.
Aircraft
