Section 3

ENGLISH ELECTRIC LIGHTNING F53 ZF579

LIGHTING

Part 1 09/01 to 02/02

EXTERNAL LIGHTING

External lighting consists of port and starboard navigation lights, port and starboard anti collision beacons, taxi lamps, top spine nav light and jet pipe lights.

None of the external lightning was functioning. Port side navigation cover was smashed and all other covers were held in place in the normal manner with various E/E fixings. Almost all fixings were ceased with corrosion, due to moisture ingress and dirt. Impact tools had failed to remove the greater majority, resulting in drilling out of fixings. Bulb fixtures and earths were also badly corroded and inoperative. These would require replacement or repair. In general wiring cores were good and were tested for continuity and resistivity. Wing and gear leg lighting was relatively simple to restore to serviceability. Jet pipe and spine lighting proved to be more complicated, due to the lack of identification forward of the transportation break (See Wiring Overview).

Since ZF579 is to be restored to ground running condition only, replacement of lighting wiring cores was only necessary where corrosion had occurred, or wiring has been chopped and was missing. This has only been necessary for jet pipe and spine lighting, since portions of the wiring were absent in the front fuselage.

These have been replaced with the same ratings (Tersil 20 grade). Wiring has been checked for LC and LG lightning circuits respectively. Front fuselage wiring bungs F31 and F32, containing wiring for LC212 and LC14 circuits (for jet pipe and spine lightning) were identified by means of continuity testing and bridged with replacement cables to complete the connections to the rear fuselage.

Fixings that were drilled out were replaced after re-threading with BA and BSF tooling. This was necessary on all light fixings, including taxi lamps.

Fuses 73 and 93 (Starboard fuse panel) were replaced to complete the LC and LG circuits for Taxi lamps and Nav/Anti collision lights, and were measured subsequently for correct voltage and operation.

Provision has been made for the external fitting of a re-fuelling probe. The wiring for circuit LC18 has been checked and tested and is ready for attachment to re-fuelling probe wiring upon fitting.

It was deemed un-necessary to remove console switches since all lighting is now working. Switches and toggles will be removed in due course, during cockpit restoration.

Starboard nav light cover, removed for cleaning and re-painting.

S/b Nav light cover, restored, to be fitted

Port nav light reconstructed, along with new cover. Now functioning correctly. All components have been lubricated. Blocks, connections and earths protected with copper grease. Seams and bolt apertures have been sealed with black insulation tape to minimize moisture ingress.

A Spine anti collision light cover

B S/B Anti Collision cover

C/D P+S/B jet pipe light covers

All covers removed for strip down and clean up

S/B nav light fittings removed and ready for cleaning, before refitting. Gaskets to be replaced where necessary.

S/B Anti collision beacon reconstructed after strip down and restoration. All components have been lubricated. Electrical blocks, earths and connections lubricated were also protected with copper grease.

Port and starboard taxi lamps operational, following complete strip down and re-build.

Light covers were removed after drilling out fixtures. Bolts were re-placed with new units and mounting points also re-threaded. Bulb fittings were soaked in a suitable solvent and freed up for correct operation. Fittings were re-located and attached to freshly stripped wire cores, and subsequently shrink-wrapped for protection. As usual, all electrical components were also lubricated.

Jet pipe lights and Spine anti collision lights have been returned to serviceability by identification and repair of the cut wiring. This was done via continuity, using the circuit diagrams in AP101……. See below plate.