# Proposed AD FAA-2012-0589: Fokker Services B.V. Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2012-19-04
- Products: Fokker Services
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: June 6, 2012, 77 FR 33332
- Comments due: July 23, 2012
- Became: [AD 2012-19-04](https://openairdocs.org/ad/2012-19-04)
- Docket: FAA-2012-0589 (https://www.regulations.gov/docket/FAA-2012-0589, where comments are filed)
- Project: 2011-NM-189-AD
- FR document: 2012-13671
- Official PDF: https://openairdocs.org/files/sha256/87/ae/87aec2b6ddd39617da028976d47a06b8d2e48114cab9c82d50208eda73f19d8f (from https://www.govinfo.gov/content/pkg/FR-2012-06-06/pdf/2012-13671.pdf)
- Federal Register: https://www.federalregister.gov/documents/2012/06/06/2012-13671/airworthiness-directives-fokker-services-bv-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/EBD5E8FBE6D57B9686257A150048D4B7.0001
- Page: https://openairdocs.org/proposed/FAA-2012-0589

## Summary

We propose to supersede two existing airworthiness directives (AD) that apply to certain Fokker Services B.V. Model F.28 Mark 0100 airplanes. The first existing AD currently requires removing the actuator from the fuel-balance transfer-valve (FBTV) and installing a locking device on the FBTV. The second existing AD currently requires inspecting to verify that the position indicator of the FBTV is in the closed position and deactivating the fuel-balance transfer-system. Since we issued those ADs, we have received reports that the FBTV was inadvertently reactivated after required de-activation measures were undone. This proposed AD would require installing an FBTV locking device. We are proposing this AD to prevent fuel starvation and consequently a double-engine flameout, possibly resulting in a forced landing, damage to the airplane, and injury to occupants.

## Notices in this docket

- Jun 6, 2012: Notice of proposed rulemaking (NPRM). (first notice), FR document 2012-13671, comments due Jul 23, 2012 (https://www.federalregister.gov/documents/2012/06/06/2012-13671/airworthiness-directives-fokker-services-bv-airplanes)

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