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2001-20-05: Anti-skid Control Boxes

FAA order 2001-20-05 is an airworthiness directive in force since November 14, 2001. The FAA's subject line: Anti-skid Control Boxes. System: other and general.

What it applies to as the FAA lists it

Kind of product: Aircraft
Makes: —
Models: F.28 Mark 0100

Dates and paperwork

In force since: November 14, 2001
Published: October 10, 2001 (signed September 26, 2001)
Docket: 2001-NM-21-AD
Replaces: 2000-21-12
Status: Current
The FAA's document: Read the order on the FAA's site

The FAA's summary their words, unchanged

This amendment supersedes an existing airworthiness directive (AD), applicable to all Fokker Model F.28 Mark 0100 series airplanes, that currently requires replacement of the anti-skid control boxes with improved units. This amendment requires modification or replacement of the anti-skid control boxes with new, improved units, which render the skid control boxes even less susceptible to electromagnetic interference during power-up and power-down transients. This action is prompted by continuing mandatory airworthiness information from a foreign airworthiness authority. The actions specified by this AD are necessary to prevent electromagnetic interference with the anti-skid control system, which could result in reduced brake pressure during low-speed taxiing, and consequent reduced controllability and performance of the airplane. This action is intended to address the identified unsafe condition.

The order itself the regulatory text, as published

Show the full text (4,179 characters)

2001-20-05  Fokker Services B.V.: Amendment 39-12453. Docket 2001-NM-21-AD. Supersedes AD 2000-21-12, Amendment 39-11944. 

	Applicability: All Model F.28 Mark 0100 series airplanes, certificated in any category. 

	Note 1: This AD applies to each airplane identified in the preceding applicability provision, regardless of whether it has been modified, altered, or repaired in the area subject to the requirements of this AD. For airplanes that have been modified, altered, or repaired so that the performance of the requirements of this AD is affected, the owner/operator must request approval for an alternative method of compliance in accordance with paragraph (c)(1) of this AD. The request should include an assessment of the effect of the modification, alteration, or repair on the unsafe condition addressed by this AD; and, if the unsafe condition has not been eliminated, the request should include specific proposed actions to address it. 

	Compliance: Required as indicated, unlessaccomplished previously. 

	To prevent electromagnetic interference with the anti-skid control system, which could result in reduced brake pressure during low-speed taxiing, and consequent reduced controllability and performance of the airplane, accomplish the following: 

Modification or Replacement 

	(a) Within 24 months after the effective date of this AD: Accomplish the action specified in either paragraph (a)(1) or (a)(2) of this AD. 

		(1) Modify any anti-skid control box having part number (P/N) 6004272-3, -4, -5, or -6, in accordance with Fokker Service Bulletin SBF100-32-123, dated November 15, 2000; or 

		(2) Replace any anti-skid control box having part number (P/N) 6004272-3, -4, -5, or -6 with an improved unit having P/N 6004272-7, in accordance with Fokker Service Bulletin SBF100-32-123, dated November 15, 2000. 

	Note 2: Fokker Service Bulletin SBF100-32-123 refers to Aircraft Braking Systems Service Bulletin Fo100-32-83, dated October 30, 2000, as an additional source of service information. 

Spares 

	(b) As of the effective date of this AD, no person shall install on any airplane an anti-skid control box having P/N 6004272-3, -4, -5, or -6, unless the anti-skid control box has been modified, in accordance with Fokker Service Bulletin SBF100-32-123, dated November 15, 2000. 

Alternative Methods of Compliance 

	(c)	(1) An alternative method of compliance or adjustment of the compliance time that provides an acceptable level of safety may be used if approved by the Manager, International Branch, ANM-116, FAA, Transport Airplane Directorate. Operators shall submit their requests through an appropriate FAA Principal Maintenance Inspector, who may add comments and then send it to the Manager, International Branch, ANM-116. 

		(2) Alternative methods of compliance, approved previously in accordance with AD 2000-21-12, amendment 39-11944, are approved as alternative methods of compliance with this AD. 

	Note 3: Informationconcerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the International Branch, ANM-116. 

Special Flight Permits 

	(d) Special flight permits may be issued in accordance with sections 21.197 and 21.199 of the Federal Aviation Regulations (14 CFR 21.197 and 21.199) to operate the airplane to a location where the requirements of this AD can be accomplished. 

Incorporation by Reference 

	(e) The actions shall be done in accordance with Fokker Service Bulletin SBF100-32-123, dated November 15, 2000. 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. 

	Note 4: The subject of this AD is addressed in Dutch airworthiness directive 1999-149, dated November 30, 2000. 

Effective Date 

	(f) This amendment becomes effective on November 14, 2001.

Source: FAA Dynamic Regulatory System, airworthiness directives. The FAA's document is the authority; the register counts are this site's, from the FAA register of November 6, 2026. Connections as data: /graph/directive/2001-20-05.json · aircraft systems.