No person may operate a turbojet-powered aircraft unless that aircraft is equipped with an approved altitude alerting system or device that is complied with provisions described in Attachment 25. Owner or operator must establish procedures for flight crew member the use of the altitude alerting system or device.The preceding paragraph of this article does not apply to any operation of an aircraft that has an experimental certificate or to the operation of any aircraft for the following purposes:1. Ferrying a newly acquired aircraft from the place where possession of it was taken to a place where the altitude alerting system or device is to be installed.2. Continuing a flight as originally planned, if the altitude alerting system or device becomes inoperative after the airplane has taken off; however, the flight may not depart from a place where repair or replacement can be made.3. Ferrying an aircraft with any inoperative altitude alerting system or device from a place where repairs or replacements cannot be made to a place where it can be made.4. Conducting an airworthiness flight test of the aircraft.5. Ferrying an airplane to a place for the purpose of registering it in a foreign country.6. Conducting a demonstration of the operation of the airplane.7. Training foreign flight crews in the operation of the aircraft before ferrying it to a place outside the country for the purpose of registering it in a foreign country.ATTACHMENT 25 Performance of Altitude Alerting System or Device meets the Requirements of a Turbojet-Powered Aircraft.pdf