TransAsia Airways has been ordered by Taiwan's aviation authority to retest all its pilots due to a "relatively high" failure rate.

The aviation authority confirmed on Tuesday that 95 TransAsia pilots who fly the Airbus A320, A321 and A330 fleet need to be re-evaluated after 10 failed retests.

An ATR72-600 aircraft with 58 people on board crashed in Taipei on February 4, killing 43 people. Another TransAsia ATR 72 crashed in July 2014, killing 48 of the 58 people on board.

Initial flight data recorder analysis indicated that human error could have been behind the crash in February. All three pilots died in the crash.

The carrier's 45 ATR72 pilots who passed an oral exam ordered by the aviation authority in the first stage are being tested on a flight simulator in Bangkok, with the tests expected to be completed by the end of the month.

The 10 pilots who failed the oral exam have been grounded and will only return to their posts after retraining.

TransAsia Airways said it had yet to receive notification from the authority on testing pilots of other types of aircraft.