# Proposed AD FAA-2011-0472: Fokker Services B.V. Model F.28 Mark 1000, 2000, 3000, and 4000 Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2011-17-03
- Products: Fokker Services
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: May 17, 2011, 76 FR 28373
- Comments due: July 1, 2011
- Became: [AD 2011-17-03](https://openairdocs.org/ad/2011-17-03)
- Docket: FAA-2011-0472 (https://www.regulations.gov/docket/FAA-2011-0472, where comments are filed)
- Project: 2011-NM-005-AD
- FR document: 2011-12015
- Official PDF: https://openairdocs.org/files/sha256/1b/e6/1be641d5c4ad8bd1169421520e3434c939d01631178f521dbf14a9e56debc5c9 (from https://www.govinfo.gov/content/pkg/FR-2011-05-17/pdf/2011-12015.pdf)
- Federal Register: https://www.federalregister.gov/documents/2011/05/17/2011-12015/airworthiness-directives-fokker-services-bv-model-f28-mark-1000-2000-3000-and-4000-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/2EAD1A8EFA6AE50A8625789300498CE9.0001
- Page: https://openairdocs.org/proposed/FAA-2011-0472

## Summary

We propose to adopt a new airworthiness directive (AD) for the products listed above. This proposed AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as:

[T]he Federal Aviation Administration (FAA) has published Special Federal Aviation Regulation (SFAR) 88, and the Joint Aviation Authorities (JAA) has published Interim Policy INT/POL/25/ 12. The review conducted by Fokker Services on the Fokker F28 Type Design in response to these regulations revealed that, under certain failure conditions, a short circuit may develop in the collector tank level float switch wiring. Such a short circuit may result in an ignition source in the tank vapour space.

This condition, if not corrected, could result in a wing fuel tank explosion and consequent loss of the aeroplane.

* * * * *

The proposedAD would require actions that are intended to address the unsafe condition described in the MCAI.

## Notices in this docket

- May 17, 2011: Notice of proposed rulemaking (NPRM). (first notice), FR document 2011-12015, comments due Jul 1, 2011 (https://www.federalregister.gov/documents/2011/05/17/2011-12015/airworthiness-directives-fokker-services-bv-model-f28-mark-1000-2000-3000-and-4000-airplanes)

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