No 1 engine jet pipe removal, and bay restoration.
No1 engine jet pipe constitutes part of the no1 ECU system, comprising No1 engine, no1 long inter space jet pipe and no1 reheat unit. All are located in the lower half of the fuselage, with no1 engine, sitting forward of no2 engine and jet pipe.
Requirement:
· Removal of no1 jet pipe for inspection and overhaul where necessary
· Inspection of no1 inter-space, including all subsystems and overhaul.
· Remove and treat any surfaces for corrosion
· Re-seal number 2 bay fire floor where required, using Bostik Viton 2230 and primer M662, and leak test.
· Re-install no1 engine jet pipe
01/06/04 No1 jet pipe retaining ring freed to release jet pipe (no1 engine bay)
01/06/04 no1 jet pipe rollers released to engaged roller rails.
01/06/04 rollers lubricated for impending removal of pipe.
16/07/04 Scaffolding erected to prepare for removal of jet pipe and storage in
work shops
16/07/04 No1 jet pipe removed and placed in storage. Initial inspection reveals
that the pipe is in excellent order, requiring only minor corrosion treatment and inhibitor to outer casing. See below plates
No1 inter space bay is also in excellent order, only requiring minor corrosion treatment for surface oxidation on some surfaces.
Rear fuselage corrosion treatment started in re-heat pipe region. Surface oxidation removed with copper brushes, and clean surfaces then treated with Deoxidine 200.
Above. Reheat and inter-space pipes removed, for cleaning and corrosion treatment of inter space areas. This also allows for a full inspection of all subsystems in
this area.
The past six months in this particular area have been spent bringing the interspace and reheat space areas up to the same standard as the rest of the airframe. These areas, having been exposed, showed signs of ageing and weathering. Both areas required a thorough clean, corrosion treatment and control, as well as a detailed inspection of all subsystems and pipeworks.
We are pleased to report that, once the bays received a clean up, and we could inspect these areas, it has been found that both areas are in surprisingly excellent condition, with minor corrosion, easily eradicated. This ties in with the general low hour nature of the airframe overall. Some work is still required at the aft ends of the re-heat bays, and is currently progressing with the replacement of old fastenings and fixings.
Above: No1 interspace area now looking as it should do. Clean, tidy and ready for a jet pipe!
No1 engine intake has also received attention.
Above:No1 intake skins being cleaned and restored