Division 1 General
Division 2 Operational procedures
Division 3 Operating limitations
Division 4 Mass and balance
Division 5 Performance
Division 6 Instrument and equipment requirements
Division 7 Maintenance
Division 8 Crew requirements
Division 9 Fatigue of the crew
Division 10 Manuals, logs and records
| Oxygen indicators |
91. An operator of a Singapore registered aircraft that is to be operated at any altitude above flight level 130, or for more than 30 minutes at an altitude between flight level 100 up to and including flight level 130, must ensure the aircraft is equipped with a means of indicating to the flight crew —
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