Division 5 The data source connected to the transponder and providing the data items in point 3(h) and (i) shall meet the following data integrity requirements:
United Kingdom
- (a)
horizontal position (data item in point 3(h)) source integrity level (SIL, expressed with respect to NIC) shall be equal to or less than 10-7 per flight-hour;
- (b)
horizontal position (data item in point 3(h)) integrity time to alert (leading to a change of the NIC quality indicator), if on-board monitoring is required to meet the horizontal position source integrity level, shall be equal to or less than 10 seconds.