Aircraft Flight Operation Regulations Article 248
An airplane when operated in accordance with the instrument flight rules, or when the airplane cannot be maintained in a desired attitude without reference to one or more flight instruments, shall be equipped with:1. A magnetic compass;2. An accurate timepiece indicating the time in hours, minutes and seconds;3. Two pressure altimeters indictors;4. An airspeed indicating system with means of preventing malfunctioning due to either condensation or icing;5. A turn and slip indicator, an attitude indicator and a heading indicator; these instruments may be installed as a combination of instruments in flight director system;6. A means of indicating whether the power supply to the gyroscopic instrument is adequate;7. A means of indicating in the flight crew compartment the outside air temperature;8. A rate-of-climb and descent indicator.A helicopter when operated in accordance with the instrument flight rules, or when the airplane cannot be maintained in a desired attitude without reference to one or more flight instruments, shall be equipped with:1. A magnetic compass;2. An accurate timepiece indicating the time in hours, minutes and seconds;3. Two sensitive pressure altimeters indictors;4. An airspeed indicating system with means of preventing malfunctioning due to either condensation or icing;5. A slip indicator;6. An attitude indicator for each required pilot;7. One additional attitude indicator;8. A heading indicator;9. A means of indicating whether the power supply to the gyroscope instrument is adequate;10. A means of indicating in the flight crew compartment the outside air temperature;11. A rate of climb and descent indicator;12. A stabilization system, unless it has been demonstrated to the satisfaction of the certificating authority which is acknowledged by CAA that the helicopter possesses, by nature of its design, adequate stability without such a system.All airplanes of a maximum take-off weight of over 5 700 kg, also helicopters operating in performance Class 1 or 2, shall be fitted with an emergency power supply, independent of the main electrical generating system, for the purpose of operating and illuminating, for a minimum period of 30 minutes. The emergency power supply shall be automatically operative after the total failure of the main electrical generating system and clear indication shall be given on the instrument panel that the attitude indicator(s) is being operated by emergency power.Those instruments that are used by any one pilot shall be so arranged as to permit the pilot to see their indications readily from his or her station, with the minimum practicable deviation from the position and line of vision normally assumed when looking forward along the flight path.
中文原文 航空器飛航作業管理規則第248條
飛機依儀器飛航規則飛航，或須依賴一種或多種飛航儀表維持其所需姿態飛航者，應備有下列儀表或裝備：
一、一具磁羅盤。
二、一具顯示時、分、秒之計時器。
三、二具氣壓高度表。
四、一具具防止結冰之空速指示系統。
五、轉彎傾斜儀、姿態儀、航向指示儀各一具，或合併三者功能之儀表或將三者功能整合於飛航指導儀內之系統。
六、一具顯示陀螺儀器動力情況之裝置。
七、一具顯示外界大氣溫度之儀表。
八、一具升降速率表。
直昇機依儀器飛航規則飛航，或須依賴一種或多種飛航儀表維持其所需姿態飛航者，應備有下列儀表或裝備：
一、一具磁羅盤。
二、一具顯示時、分、秒之計時器。
三、二具氣壓高度表。
四、一具具防止結冰之空速指示系統。
五、一具傾斜儀。
六、每位駕駛員配置一具姿態儀。
七、一具備用姿態儀。
八、一具航向指示儀。
九、一具顯示陀螺儀器動力情況之裝置。
十、一具顯示外界大氣溫度之儀表。
十一、一具升降速率表。
十二、穩定系統。
但其穩定性經民航局認可之航空器設計國民航主管機關檢定合格者，不在此限。
最大起飛重量超過五千七百公斤之飛機及一級、二級性能直昇機，應裝置足供姿態儀運轉至少三十分鐘之獨立緊急供電設備，該緊急供電設備應在主電力系統失效時自動通電，並在該姿態儀上顯示使用緊急供電設備。
航空器之儀表或顯示器應裝置於駕駛員正視前方飛航時，易於觀察且指示讀數誤差達最小之位置。
一、一具磁羅盤。
二、一具顯示時、分、秒之計時器。
三、二具氣壓高度表。
四、一具具防止結冰之空速指示系統。
五、轉彎傾斜儀、姿態儀、航向指示儀各一具，或合併三者功能之儀表或將三者功能整合於飛航指導儀內之系統。
六、一具顯示陀螺儀器動力情況之裝置。
七、一具顯示外界大氣溫度之儀表。
八、一具升降速率表。
直昇機依儀器飛航規則飛航，或須依賴一種或多種飛航儀表維持其所需姿態飛航者，應備有下列儀表或裝備：
一、一具磁羅盤。
二、一具顯示時、分、秒之計時器。
三、二具氣壓高度表。
四、一具具防止結冰之空速指示系統。
五、一具傾斜儀。
六、每位駕駛員配置一具姿態儀。
七、一具備用姿態儀。
八、一具航向指示儀。
九、一具顯示陀螺儀器動力情況之裝置。
十、一具顯示外界大氣溫度之儀表。
十一、一具升降速率表。
十二、穩定系統。
但其穩定性經民航局認可之航空器設計國民航主管機關檢定合格者，不在此限。
最大起飛重量超過五千七百公斤之飛機及一級、二級性能直昇機，應裝置足供姿態儀運轉至少三十分鐘之獨立緊急供電設備，該緊急供電設備應在主電力系統失效時自動通電，並在該姿態儀上顯示使用緊急供電設備。
航空器之儀表或顯示器應裝置於駕駛員正視前方飛航時，易於觀察且指示讀數誤差達最小之位置。