In forceAs enactedCurrent version · As enactedSee versions on Singapore Statutes Online(opens the publisher’s site)
Air Navigation (91 — General Operating Rules) Regulations 2018 · As enacted · Part 2
90. Pressure-altitude reporting transponder
Feedback & supportAn operator of a Singapore registered aircraft must ensure that the aircraft is equipped with a pressure‑altitude reporting transponder which operates in accordance with the provisions of Volume IV of Annex 10 to the Chicago Convention.