# AD 86-14-04: Horizontal Stabilizer Control Unit

- Type: Airworthiness directive
- Status: Current
- Products: Fokker Services F.28 Mark 0070, F.28 Mark 0100, F.28 Mark 1000, F.28 Mark 2000, F.28 Mark 3000 and F.28 Mark 4000
- Effective: August 4, 1986
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Large airplane
- Amendment: 39-5343
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/3B9A3575308D52AC862569F1005CC166.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/86-14-04

## The airworthiness directive

86-14-04 FOKKER B.V.: Amendment 39-5343. Applies to Model F28 series airplanes as listed in Fokker Service Bulletin F28/27-161, dated May 6, 1985, certificated in any category. Compliance is required within 6 months after the effective date of this AD. To prevent uncontrolled movement of the horizontal stabilizer, accomplish the following, unless previously accomplished:

A. Modify the horizontal stabilizer control unit in accordance with Fokker Service Bulletin F28/27-161, dated May 6, 1985.

B. An alternate means of compliance or adjustment of the compliance time, which provides an acceptable level of safety, may be used when approved by the Manager, Standardization Branch, ANM-113, FAA, Northwest Mountain Region.

C. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base for the accomplishment of inspections and/or modifications required by this AD.

All persons affected by this directive, who have not alreadyreceived the appropriate service document from the manufacturer, may obtain copies upon request to the Manager of Maintenance and Engineering, Fokker B.V., Product Support, P.O. Box 7600, 11172J Schiphol Oost, The Netherlands. This document may be examined at the FAA, Northwest Mountain Region, 17900 Pacific Highway South, Seattle, Washington, or the Seattle Aircraft Certification Office, 9010 East Marginal Way South, Seattle, Washington.

This amendment becomes effective August 4, 1986.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A20EU](https://openairdocs.org/tcds/A20EU): Fokker Services B.V.; names 6 of 6 models: F28 Mark 1000, F28 Mark 4000, F28 Mark 2000, F28 Mark 0070, F28 Mark 3000, F28 Mark 0100

## Registered aircraft it may apply to (OpenAirDocs)

No registered aircraft matched the models it names.

Its text cites no advisory circulars or STCs.

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