TSO Time Since Overhaul. Expressed in Hours. (From new if not previously Overhauled) For Components, Landing Gear and Engines will usually be Aircraft Flight Hours. For APU should be APU Hours, cautio...
Time Since Repair (TSR) Time since Repair. Expressed in Hours. For Components, Landing Gear and Engines will usually be Aircraft Flight Hours. For APU should be APU Hours, caution should be taken on s...
Type Certificate Data Sheets (TCDS) are a part of the Type Certification Process and contain information relevant to the certification of particular aircraft. TCDS contain information that is useful, ...
TSI Time Since Installation. Expressed in Hours from Installation. For Components, Landing Gear and Engines will usually be Aircraft Flight Hours. For APU should be APU Hours, caution should be taken ...
TSN (Days) Time Since New. Expressed in Calendar Days from new. Note: Some computer systems default to counting TSN (Days) from the date of Installation if the Serial Number was unknown to the system....
Time Since New – the amount of hours an aircraft or component has flown since manufacture....