# Proposed AD 2001-NM-21-AD: Fokker Model F.28 Mark 0100 Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2001-20-05
- Products: Fokker Services B.V.
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: August 3, 2001, 66 FR 40646
- Comments due: September 4, 2001
- Became: [AD 2001-20-05](https://openairdocs.org/ad/2001-20-05)
- Docket: 2001-NM-21-AD
- FR document: 01-19424
- Official PDF: https://openairdocs.org/files/sha256/8e/f9/8ef9f334ba20ddd169c45e65a209a5b37111a5f6d88ed423c04590e29d106cd7 (from https://www.govinfo.gov/content/pkg/FR-2001-08-03/pdf/01-19424.pdf)
- Federal Register: https://www.federalregister.gov/documents/2001/08/03/01-19424/airworthiness-directives-fokker-model-f28-mark-0100-series-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/8AB41D4F7A36929186256A9D00551A3A.0001
- Page: https://openairdocs.org/proposed/2001-NM-21-AD

## Summary

This document proposes the supersedure of 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 action would require 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 the proposed 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.

## Notices in this docket

- Aug 3, 2001: Notice of proposed rulemaking (NPRM). (first notice), FR document 01-19424, comments due Sep 4, 2001 (https://www.federalregister.gov/documents/2001/08/03/01-19424/airworthiness-directives-fokker-model-f28-mark-0100-series-airplanes)

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