March 13 (Reuters) - HSBC Holdings-
* HSBC appoints Mark Tucker to succeed Douglas Flint as group chairman
* Tucker, will take over responsibility for leading process of identifying a successor to current group CEO, Stuart Gulliver
* Process of identifying a successor "expected to conclude during 2018 in order to meet Stuart Gulliver's expressed desire to retire in that timeframe"
* Upon appointment, Mark Tucker will be independent and will be stepping down from boards of AIA and Goldman Sachs Source text for Eikon: Further company coverage: