New Delhi, Oct. 19 -- N Chandrasekaran's third term as Tata Sons chairman faces questions over the company's appointment rules. The dispute centres on its Articles of Association (AoA), particularly Article 118. These articles govern how the company selects its chairman and grants executive powers.

Lawyer Gaurav Pingle spoke to Mint Money about the AoA as a contract between companies and members. In this case, three articles help explain the disagreement: Articles 118, 121 and 105.

Article 118 requires a selection committee to recommend a candidate for chairman. The board can appoint that candidate only if Article 121 permits it.

That article requires support from a majority of Tata Trusts' nominees. Article 105 allows the board to dec...