Appendix III - Complex maintenance tasks not to be released by the pilot-owner

All of the following constitutes the complex maintenance tasks which, according to Appendix II, shall not be carried out by the pilot-owner. Those tasks shall be released either by an approved maintenance organisation or by independent certifying staff:

(a)  the modification, repair or replacement by riveting, bonding, laminating, or welding of any of the following airframe parts:

(1)  a box beam;

(2)  a wing stringer or chord member;

(3)  a spar;

(4)  a spar flange;

(5)  a member of a truss type beam;

(6)  the web of a beam;

(7)  a keel or chine member of a flying boat hull or a float;

(8)  a corrugated sheet compression member in a wing or tail surface;

(9)  a wing main rib;

(10)  a wing or tail surface brace strut;

(11)  an engine mount;

(12)  a fuselage longeron or frame;

(13)  a member of a side truss, horizontal truss or bulkhead;

(14)  a seat support brace or bracket;

(15)  a seat rail replacement;

(16)  a landing-gear strut or brace strut;

(17)  an axle;

(18)  a wheel; and

(19)  a ski or ski pedestal, excluding the replacement of a low-friction coating;

(b)  the modification or repair of any of the following parts:

(1)  aircraft skin or the skin of an aircraft float if the work requires the use of a support, jig or fixture;

(2)  aircraft skin that is subject to pressurisation loads if the damage to the skin measures more than 15 cm (6 in.) in any direction;

(3)  a load-bearing part of a control system, including a control column, pedal, shaft, quadrant, bell crank, torque tube, control horn and forged or cast bracket, but excluding:

(i)  the swaging of a repair splice or cable fitting; and

(ii)  the replacement of a push-pull tube end fitting that is attached by riveting;

(4)  any other structure not listed in point (a) that a manufacturer has identified as primary structure in their maintenance manual, structural repair manual or instructions for continuing airworthiness;

(c)  the performance of all of the following maintenance on a piston engine:

(1)  dismantling and subsequent reassembling of a piston engine other than:

(i)  to obtain access to the piston/cylinder assemblies; or

(ii)  to remove the rear accessory cover to inspect and/or replace oil pump assemblies, where such work does not involve the removal and refitment of internal gears;

(2)  dismantling and subsequent reassembling of reduction gears;

(3)  welding and brazing of joints, other-than-minor weld repairs to exhaust units carried out by a suitably approved or authorised welder but excluding component replacement;

(4)  the disturbing of individual parts of units which are supplied as bench-tested units except for the replacement or adjustment of items normally replaceable or adjustable in service;

(d)  the balancing of a propeller, except:

(1)  for the certification of static balancing where required by the maintenance manual; and

(2)  dynamic balancing on installed propellers using electronic balancing equipment where permitted by the maintenance manual or other approved airworthiness data;

(e)  any additional task that requires:

(1)  specialised tooling, equipment or facilities; or

(2)  significant coordination procedures because of the extensive duration of the tasks and the involvement of several persons.