Source: https://www.federalregister.gov/documents/2000/08/29/00-21459/airworthiness-directives-fokker-model-f28-mark-0100-series-airplanes
Timestamp: 2018-07-20 13:34:54
Document Index: 142891505

Matched Legal Cases: ['art 39', 'art 39', 'art 1', 'art 2', 'art 3', 'art 51']

Federal Register :: Airworthiness Directives; Fokker Model F.28 Mark 0100 Series Airplanes
A Rule by the Federal Aviation Administration on 08/29/2000
65 FR 52298
52298-52301 (4 pages)
Docket No. 2000-NM-02-AD
Amendment 39-11876
AD 2000-17-03
00-21459
Repetitive Eddy Current and/or Dye Penetrant Inspections
https://www.federalregister.gov/d/00-21459 https://www.federalregister.gov/d/00-21459
This amendment supersedes an existing airworthiness directive (AD), applicable to certain Fokker Model F.28 Mark 0100 series airplanes, that currently requires a one-time visual inspection and a one-time eddy current and/or dye penetrant inspection of the Start Printed Page 52299nose landing gear (NLG) main fitting to detect cracking; and rework of the NLG main fitting, if necessary. This amendment requires new inspections (one-time detailed visual inspection and repetitive eddy current or dye penetrant inspections) to detect cracking of the NLG main fitting subassembly, and corrective actions, if necessary. This amendment also revises the applicability of the existing AD. This amendment is prompted by the issuance of mandatory continuing airworthiness information by a foreign civil airworthiness authority. The actions specified by this AD are intended to prevent cracking of the NLG main fitting, which could lead to collapse of the NLG during takeoff and landing, and possible injury to the flightcrew and passengers.
The incorporation by reference of certain publications listed in the regulations is approved by the Director of the Federal Register as of October 3, 2000.
A proposal to amend part 39 of the Federal Aviation Regulations (14 CFR part 39) by superseding AD 98-22-01, amendment 39-10847 (63 FR 58625, November 2, 1998), which is applicable to certain Fokker Model F.28 Mark 0100 series airplanes, was published in the Federal Register on March 15, 2000 (65 FR 13923). The action proposed to require new inspections (one-time detailed visual inspection and repetitive eddy current or dye penetrant inspections) to detect cracking of the nose landing gear (NLG) main fitting subassembly, and corrective actions, if necessary. The action also proposed to revise the applicability of the existing AD.
One commenter states that it has completed the inspections and has a repetitive inspection program already in place to comply with the requirements of this AD.
One commenter requests that the Explanation of Relevant Service Information section of the AD be revised to refer to the current type certificate holder (Fokker Services B.V.), rather than the now defunct airplane manufacturer, as the issuer of the relevant service information. The FAA acknowledges the accuracy of this information; however, since this section is not repeated in the final rule, no change is made to the AD.
There are approximately 87 airplanes of U.S. registry that will be affected by this AD.
The one-time detailed visual inspection required by this AD action will take approximately 1 work hour per airplane to accomplish, at an average labor rate of $60 per work hour. Based on these figures, the cost impact of the one-time inspection required by this AD on U.S. operators is estimated to be $5,220, or $60 per airplane.
The repetitive eddy current or dye penetrant inspections required by this AD action will take approximately 1 work hour per airplane to accomplish, at an average labor rate of $60 per work hour. Based on these figures, the cost impact of the repetitive inspection required by this AD on U.S. operators is estimated to be $5,220, or $60 per airplane, per inspection cycle.
For the reasons discussed above, I certify that this action: (1) is not a “significant regulatory action” under Executive Order 12866; (2) is not a “significant rule” under DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); and (3) will not have a significant economic impact, positive or negative, on a substantial number of small entities under the criteria of the Regulatory Flexibility Act. A final evaluation has been prepared for this action and it is contained in the Rules Docket. A copy of it may be obtained from the Rules Docket at the location provided under the caption ADDRESSES.
2. Section 39.13 is amended by removing amendment 39-10847 ( 63 FR 58625, November 2, 1998), and by adding a new airworthiness directive (AD), amendment 39-11876, to read as follows:
2000-17-03 Fokker Services B.V.: Amendment 39-11876. Docket 2000-NM-02-AD. Supersedes AD 98-22-01, Amendment 39-10847.
Applicability: Model F.28 Mark 0100 series airplanes, certificated in any category; equipped with Messier-Dowty nose landing gear (NLG) having part Start Printed Page 52300number (P/N) 201071001 or 201071002, on which a main fitting subassembly (MFSA) having P/N 201071200, 201071228, 201071248, or 201071249 is installed.
To prevent cracking of the NLG main fitting, which could lead to collapse of the NLG during takeoff and landing, and possible injury to the flightcrew and passengers, accomplish the following:
(a) Prior to the accumulation of 7,500 total flight cycles or within 50 flight cycles after the effective date of this AD, whichever occurs later: Perform a one-time detailed visual inspection of the NLG main fitting subassembly to detect cracking, in accordance with Part 1 of the Accomplishment Instructions of Fokker Service Bulletin SBF100-32-118, dated October 8, 1999.
(1) If no cracking is detected, no further action is required by this paragraph.
(2) If any cracking is detected, prior to further flight, accomplish the actions required by paragraph (b) of this AD.
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 mirrors, magnifying lenses, etc., may be used. Surface cleaning and elaborate access procedures may be required.”
Actions accomplished prior to the effective date of this AD, in accordance with Fokker Service Bulletin SBF100-32-112, dated November 14, 1997, which was cited in AD 98-22-01, amendment 39-10847, are not considered acceptable for compliance with any requirements of this AD.
(b) Except as required by paragraph (a)(2) of this AD: Prior to the accumulation of 7,875 total flight cycles or within 375 flight cycles after the effective date of this AD, whichever occurs later, perform an eddy current or dye penetrant inspection of the NLG main fitting subassembly to detect cracking, in accordance with Part 2 of the Accomplishment Instructions of Fokker Service Bulletin SBF100-32-118, dated October 8, 1999. Such inspection within the compliance time required by paragraph (a) of this AD terminates the requirements of paragraph (a) of this AD. Repeat the inspection thereafter, using an eddy current or dye penetrant technique, at intervals not to exceed 750 flight cycles.
(c) If any cracking is detected during any inspection required by paragraph (b) of this AD: Prior to further flight, rework the main fitting of the NLG, in accordance with Part 3 of the Accomplishment Instructions of Fokker Service Bulletin SBF100-32-118, dated October 8, 1999. If, after rework, any cracking remains that exceeds the limits specified in the service bulletin, prior to further flight, accomplish the actions specified by either paragraph (c)(1) or (c)(2) of this AD.
(1) Replace the NLG in accordance with the service bulletin; and within 7,875 flight cycles after such replacement, perform the inspection as specified in paragraph (b) of this AD, and repeat the inspection thereafter at intervals not to exceed 750 flight cycles. Or
(2) Repair in accordance with a method approved by either the Manager, International Branch, ANM-116, FAA, Transport Airplane Directorate; or the Rijksluchtvaartdienst (RLD) (or its delegated agent). For a repair method to be approved by the Manager, International Branch, ANM-116, as required by this paragraph, the Manager's approval letter must specifically reference this AD.
The Fokker service bulletin references Messier-Dowty Service Bulletin F100-32-92, Revision 1, dated October 8, 1999, as an additional source of service information for accomplishing the inspections and rework of the NLG main fitting subassembly.
(d) Submit a report of the detailed visual inspection findings (positive and negative) required by paragraph (a) of this AD and a report of the initial eddy current or dye penetrant inspection findings (positive and negative) required by paragraph (b) of this AD to Fokker Services B.V., P.O. Box 231, 2150 AE Nieuw-Vennep, the Netherlands; at the applicable time specified in paragraph (d)(1) or (d)(2) of this AD. Information collection requirements contained in this regulation have been approved by the Office of Management and Budget (OMP) under the provisions of the Paperwork Reduction Act of 1980 (44 U.S.C. 3501, et seq.) and have been assigned OMB Control Number 2120-0056.
(1) For airplanes on which the detailed visual inspection specified by paragraph (a) of this AD and the initial repetitive eddy current or dye penetrant inspection specified by paragraph (b) of this AD are accomplished after the effective date of this AD: Submit each report within 7 days after performing the applicable inspection.
(2) For airplanes on which the detailed visual inspection specified by paragraph (a) of this AD and the initial repetitive eddy current or dye penetrant inspection specified in paragraph (b) of this AD have been accomplished prior to the effective date of this AD: Submit the reports within 7 days after the effective date of this AD.
(e) As of the effective date of this AD, no person shall install a NLG having P/N 201071001 or 201071002 unless the installed MFSA has been inspected, by means of an eddy current or dye penetrant inspection, in accordance with paragraph (b) of this AD.
(h) Except as provided by paragraph (c)(2) of this AD, the actions shall be done in accordance with Fokker Service Bulletin SBF100-32-118, dated October Start Printed Page 523018, 1999. This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Copies may be obtained from Fokker Services B.V., P.O. Box 231, 2150 AE Nieuw-Vennep, the Netherlands. Copies may be inspected at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington; or at the Office of the Federal Register 800 North Capitol Street, NW., suite 700, Washington, DC.
The subject of this AD is addressed in Dutch airworthiness directive BLA 1997-116/2 (A), dated October 29, 1999.
(i) This amendment becomes effective on October 3, 2000.
Issued in Renton, Washington, on August 17, 2000.
[FR Doc. 00-21459 Filed 8-28-00; 8:45 am]