There is no specific limit on an instructor's hours (whether instructional or not)other than those already quoted from the ANO. However, in the case of approved training, JAR-FCL requires that "The maximum flying hours, maximum flying duty hours and minimum rest time between instructional duties of instructors shall be acceptable to the Authority."Flying duty periods and flight time limitations for flying instructors should be included in the approved Operations Manual and it is up to the FTO to ensure that these limits are not exceeded.