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AD/F50/96 Amdt 1 - Bottom Skin Chine Line
Fokker F50 (F27 Mk 50) Series AeroplanesFokker F50 (F27 Mk 50) Series Aeroplanes
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Fokker F50 (F27 Mk 50) Series Aeroplanes
| AD/F50/96 Amdt 1 | Bottom Skin Chine Line | 12/2006 |
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| Applicability: | Model F27 Mark 050 aircraft, serial numbers 20103 through 20172. |
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| Requirement: | 1. Visually inspect the Fuselage Bottom Skin Chine Line between Fuselage Station (STA) 6675 and STA 15375 in accordance with Part 3, Steps A and B of the Accomplishment Instructions of Fokker Services Service BulletinSBF50-53-058, dated 30 June 2006, or later EASA approved revision.a. When cracks are found appearing through the paint layer, proceed in accordance with the instructions in SBF50-53-058 and within the following time limits:If the crack length is more than 50 mm, before further flight, remove the paint in accordance with AMM Chapter 51-24-00 and reinspect.If the crack length is between 10 and 50 mm, within 50 flight cycles, remove the paint in accordance with AMM Chapter 51-24-00, and reinspect.If the crack length is less than 10 mm, within 1,000 flight cycles, eddy-current inspect in accordance with Fokker SBF50-53-059. dated24 August 2006, or later EASA approved revision.b. When cracks are found after the removal of paint as instructed by Requirement 1.a., proceed in accordance with the instructions inSBF50-53-058, and within the following time limits:If the crack length is more than 100 mm, before further flight, repair in accordance with SRM Chapter 53-00-02 Repair No. 10.If the crack length is between 50 mm and 100 mm, within 50 flight cycles, repair in accordance with SRM Chapter 53-00-02 Repair No. 10.If the crack length is between 10 mm and 50 mm, repeat the visual inspection in accordance with SBF50-53-058 within 100 flight cycles after the initial inspection, and thereafter at intervals not to exceed 100 flight cycles; until accomplishment of SBF50-53-059.If the crack length is less than 10 mm, within 1,000 flight cycles, eddy-current inspect in accordance with Fokker SBF50-53-059. |
| 2. Visually inspect the Fuselage Bottom Skin Chine Line between STA 1320 and STA 3100, in accordance with Part 3, Steps C and D of the Accomplishment Instructions of SBF50-53-058, dated 30 June 2006, or later EASA approved revision.When cracks are found appearing through the paint layer, proceed in accordance with the instructions in SBF50-53-058 and within the time limits provided in Requirement 1.a.When cracks are found after the removal of paint, proceed in accordance with the instructions in SBF50-53-058 and within the time limits provided in Requirement 1.b.3. In all cases, whether or not cracks were found and repaired in accordance with Requirements 1 and 2 of this Directive, eddy-current inspect the Fuselage Bottom Skin Chine Line (between the same fuselage stations as covered by the visual inspection) in accordance with Part 3, Accomplishment Instructions ofSBF50-53-059 dated 24 August 2006, or later EASA approved revision.When cracks are found during the eddy-current inspection, proceed in accordance with the instructions in SBF50-53-059 and the following time limits:If the crack length is more than 100 mm, before further flight, repair in accordance with SRM Chapter 53-00-02 Repair No. 10.If the crack length is between 50 mm and 100 mm, within 50 flight cycles, repair in accordance with SRM Chapter 53-00-02 Repair No. 10.If the crack length is less than 50 mm, within 100 flight cycles after the initial inspection, accomplish the eddy-current inspection in accordance with SBF50-53-059, and repeat thereafter at intervals not to exceed 100 flight cycles; until the repair is accomplished.When cracks are found as a result of the inspection requirements of this Directive, within 7 days after the inspection, report all findings to Fokker Services B.V.Note: CAA-NL AD NL-2006-009 R1 refers. |