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.