Airworthiness Directive · Amendment 39-11490 · Airbus Model A300 B4-203 Series Airplanes
Airbus Model A300 B4-203 Series Airplanes
Model A300 B4-203 series airplanes, certificated in any category, equipped with La Guardia main landing gears (MLG) and Messier Bugatti steel brakes.
This amendment adopts a new airworthiness directive (AD), applicable to certain Airbus Model A300 B4-203 series airplanes. This action requires repetitive inspections of the attachment bolts of the brake bar on the main landing gear (MLG) to detect missing or damaged bolts, and replacement with new bolts, if necessary. This amendment is prompted by issuance of mandatory continuing airworthiness information by a foreign civil airworthiness authority. The actions specified in this AD are intended to prevent detachment of the brake bar from the MLG strut, which could result in failure of the main landing gear to extend.
Required as indicated, unless accomplished previously.
To prevent detachment of the brake bar from the MLG strut, which could result in failure of the MLG to extend, accomplish the following:
(a) Within 500 flight hours after the effective date of this AD, perform a detailed visual inspection to detect missing brake bar attachment bolts on the left and right MLG, in accordance with Airbus Service Bulletin A300-32-0430, dated January 29, 1999.
(1) If no attachment bolt is missing, prior to further flight, remove the attachment bolts, and perform a detailed visual inspection to detect damage, as specified by Figure 1 of the service bulletin. Accomplish the actions in accordance with the service bulletin.
(i) If no damage is detected, repeat the detailed visual inspection required by paragraph (a) of this AD thereafter at intervals not to exceed 500 flight hours.
(ii) If any damage is detected, prior to further flight, replace the two attachment bolts with new bolts in accordance with the service bulletin. Repeat the detailed visual inspection required by paragraph (a) of this AD thereafter at intervals not to exceed 500 flight hours.
(2) If any attachment bolt is missing, prior to further flight, replace the two attachment bolts with new bolts, in accordance with the service bulletin. Repeat the detailed visual inspection required by paragraph (a) of this AD thereafter at intervals not to exceed 500 flight hours.
Note 2: For the purposes of this AD, a detailed visual inspection is defined as: ``An intensive visual examination of a specific structural area, system, installation, or assembly to detect damage, failure, or irregularity. Available lighting is normally supplemented with a direct source of good lighting at intensity deemed appropriate by the inspector. Inspection aids such as mirror, magnifying lenses, etc., may be used. Surface cleaning and elaborate access procedures may be required.''
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.
