Airworthiness Directive · Amendment 39-14001 · BAE Systems (Operations) Limited (Jetstream) Model 4101 Airplanes
BAE Systems (Operations) Limited (Jetstream) Model 4101 Airplanes
This AD applies to all BAE Systems (Operations) Limited (Formerly British Aerospace Regional Aircraft) Model 4101 airplanes, certificated in any category.
The FAA is adopting a new airworthiness directive (AD) for all BAE Systems (Operations) Limited (Jetstream) Model 4101 airplanes. This AD requires repetitive detailed inspections of the aft fuselage frames for any discrepancies, and any applicable corrective actions. This AD is prompted by reports of corrosion found on the aft fuselage frames due to the ingress of water or liquid. We are issuing this AD to detect and correct corrosion of the aft fuselage frames, which could result in reduced structural integrity of the fuselage.
You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done.
Within 12 months after the effective date of this AD, do a detailed inspection of the aft fuselage frames for any discrepancies i.e., corrosion, soft spots, and suspected corrosion), and any applicable corrective actions, in accordance with the Accomplishment Instructions of BAE Systems (Operations) Limited Service Bulletin J41-53-051, dated January 25, 2002; or Revision 1, dated May 2, 2003; except as provided by paragraphs (g) and (i) of this AD. Do any applicable corrective action before further flight.
Note 1: For the purposes of this AD, a detailed inspection is “an intensive examination of a specific item, installation, or assembly to detect damage, failure, or irregularity. Available lighting is normally supplemented with a direct source of good lighting at an intensity deemed appropriate. Inspection aids such as mirrors magnifying lenses, etc. may be necessary. Surface cleaning and elaborate procedures may be required.”
(g) If any corrosion outside the limits defined in the service bulletin is detected: Before further flight, repair the corrosion according to a method approved by either the Manager, International Branch, ANM-116, Transport Airplane Directorate, FAA; or the Civil Aviation Authority (or its delegated agent).
Repeat the inspection and do applicable corrective actions required by paragraph (f) of this AD at intervals not to exceed 24 months.
(i) Although the service bulletins referenced in this AD specify to submit inspection reports to the manufacturer, this AD does not include that requirement.
