An MSP faces being banned from Holyrood meetings for five days after being found guilty of issuing a press release ahead of an official committee report.
Independent MSP Brian Monteith had set out to highlight his disagreement with a committee's decision to back the Glasgow airport rail link.
However, Holyrood's standards commissioner said Mr Monteith had issued the information prematurely.
Lib Dem Mike Pringle was given a five day ban last year for a similar breach.
The decision to bar Mr Monteith was made by MSPs on Holyrood's Standards Committee, following an inquiry by standards commissioner Dr Jim Dyer.
The verdict, if endorsed by parliament, means he cannot attend committees or meetings of parliament for that period.
However, he will be permitted to do other work within the building, such as constituency tasks.
White elephant
Mr Monteith was a member of a Holyrood committee scrutinising the proposed Glasgow airport rail link.
The committee gave the scheme its backing but Mr Monteith disagreed and warned the scheme could become an "expensive white elephant".
The former Conservative had claimed his press release had been published prematurely because the media had broken an embargo.
However, Standards Committee convener Brian Adam told MSPs that an official had advised that no information should be issued, embargoed or otherwise.
The MSPs said he had broken two parts of the code - one relating to the confidentiality of committee reports and one requiring dissenting committee members to wait for publication of a report before going public with their dissent.
Source: BBC
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