12Compliance time extensions for additional maintenance

12 Compliance time extensions for additional maintenance

12.1This subsection applies to the following clauses of Appendix 1:

(a) clause 3 (pitot-static systems);

(b) clause 4 (pressure altimeters and air data computers);

(c) clause 5 (airspeed indicators);

(d) clause 6 (fuel quantity gauges);

(e) clause 7 (propeller systems);

(f) clause 8 (feathering propellers);

(g) clause 9 (cockpit voice recording systems);

(h) clause 12 (towing release systems);

(i) clause 14 (ATC transponders);

(j) clause 18 (ADF systems);

(k) clause 19 (VOR systems);

(l) clause 20 (VOR systems in I.F.R.).

12.2If a time interval is specified for an additional maintenance requirement, that time interval (original time interval) may be extended by up to 10% of the flight hours or calendar days specified (as the case requires), subject to the following:

(a) if the time interval is specified in flight hours — the interval may be extended by not more than 10 flight hours;

(b) if the time interval is specified in calendar days — the interval may be extended by not more than 60 days;

(c) a time interval may be extended once only (the extended time interval);

(d) after the extended time interval, the next time interval for an additional maintenance requirement must be reduced by the difference in flight hours or calendar days (as the case requires) between the extended time interval and the original time interval.