# Proposed AD FAA-2016-6665: Fokker Services B.V. Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2016-18-13
- Products: Fokker Services B.V.
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: May 13, 2016, 81 FR 29800
- Comments due: June 27, 2016
- Became: [AD 2016-18-13](https://openairdocs.org/ad/2016-18-13)
- Docket: FAA-2016-6665 (https://www.regulations.gov/docket/FAA-2016-6665, where comments are filed)
- Project: 2015-NM-070-AD
- FR document: 2016-11172
- Official PDF: https://openairdocs.org/files/sha256/e1/da/e1da32435a9a18bcbbf0881d33da7bddbc8d1a69de6d13bd7247d348a483f862 (from https://www.govinfo.gov/content/pkg/FR-2016-05-13/pdf/2016-11172.pdf)
- Federal Register: https://www.federalregister.gov/documents/2016/05/13/2016-11172/airworthiness-directives-fokker-services-bv-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/72966D9CFF95BDDD86257FB2004F38D5.0001
- Page: https://openairdocs.org/proposed/FAA-2016-6665

## Summary

We propose to adopt a new airworthiness directive (AD) for all Fokker Services B.V. Model F28 Mark 0070 and 0100 airplanes. This proposed AD was prompted by an aileron-wing flutter analysis finding that when a hydraulic aileron actuator is not powered, while at least one aileron flutter damper is inoperative (latent failure), the maximum speed currently defined in the airplane flight manual (AFM) is insufficient to meet the required safety margin. This proposed AD would require revising the AFM to include procedures to follow in the event of a hydraulic system failure and abnormal flight control behavior. We are proposing this AD to ensure that the flightcrew has procedures to follow in the event of a hydraulic system failure and abnormal flight control behavior. If not corrected, this condition could lead to aileron flutter and possible reduced control of the airplane.

## Notices in this docket

- May 13, 2016: Notice of proposed rulemaking (NPRM). (first notice), FR document 2016-11172, comments due Jun 27, 2016 (https://www.federalregister.gov/documents/2016/05/13/2016-11172/airworthiness-directives-fokker-services-bv-airplanes)

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