Section 13

Mainplane Flaps restoration.

Port and Starboard wings are designed such that the trailing edges of each wing structure encompass a large hydraulically actuated flap section, which may be lowered and raised for low speed stability and lift, during take off and landing. Each flap also provides extra fuel storage. Each flap is attached to its associated main plane via inboard outboard and centre hinge sections.

Both flaps for ZF579 require refurbishment, through paint stripping, re-painting, new fuel seals re-fitment.

03/02/03 Flaps relocated to workshop facility for refurbishment., paint stripped and corrosion treated.

12/11/04 Flaps receive base coat and top-coat of paint before application of lacquer

Above. Flap awaits final top-coat of paint

03/04/2005

Flap actuators tested on re-connection of services hydraulic reservoir. Port actuators found to be acceptable, slight moistness evident around actuator walking joints, within limits. Starboard actuators also tested, starboard outboard walking joints to flaps up line excessive leakage. Seals renewed as required. See below.

Above. Starboard outboard flap walking joint seals being replaced.

05/05/05

All flap walking joint seals replaced, jacks tested for leakage. No further leakage found.

Flap fitment takes place for starboard main plane. See below plates.

Above:-Flap jack attachment and inboard equipment bay

Above: Inboard flap jack and pin attached, along with fuel sender wiring and float switch wiring.

Above: Starboard flap in place and lined up, ready for final polishing and wax oiling

Above. Starboard flap fitted, sealed and waxed.

Above: flaps being exercised, along with air brakes.