Samart, who was also a Democrat MP, said a section of track near the Hua Mark Station was eroded and several metal springs pinning track at a curve between the Lat Krabang and Suvarnabhumi stations were in a bad condition.
He said that could pose a safety threat to passengers and train employees.
Samart said he also urged the SRT, on July 19 and August 11, to do a thorough maintenance check of Airport Link trains when they reach the one million-kilometre mark in terms of distance travelled.
He said the board resolved last September to conduct a Bt300 million maintenance project and launch a bid for the work to be done but that never happened.
Instead, the board is due to meet on Tuesday to hire a company to carry out the work at a cost of Bt386 million.
Samart urged the board to organise a bid in order to have several strong choices and get the work done at an appropriate price.