Battle of Britain Memorial Flight Lancaster PA474 ‘Major’ Maintenance Update

Engineers at the Aircraft Restoration Company in Duxford continue to make steady progress on the Battle of Britain Memorial Flight’s Lancaster PA474 as it undergoes an extensive major maintenance programme. From structural inspections and non-destructive testing to undercarriage overhaul and new fuel tank production, significant milestones have already been achieved.

Moreno Aguiari
Moreno Aguiari
Lancaster PA474 in ARCo’s Stephenson hangar at Duxford on 6th February 2026 with its gun turrets, engines, undercarriage and fuel tanks removed, along with numerous access and inspection panels. (Photo: BBMF)
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This is the second in a planned series of updates for members of the RAF Memorial Flight Official Club, outlining progress on the extensive maintenance programme currently underway on the Battle of Britain Memorial Flight’s Lancaster PA474. We kindly remind members that these reports are intended solely for Club readership and ask that they are not shared elsewhere, in respect of their exclusive nature and the author’s copyright. Since the previous update in the December newsletter, the engineering team at the Aircraft Restoration Company (ARCo) in Duxford has continued to make steady headway on the program.

Lancaster PA474 in ARCos Stephenson hangar scaled
Lancaster PA474 inside ARCo’s Stephenson Hangar at the start of its Major maintenance, with the gun turrets and starboard engines already removed. A crane is positioned to lift out the port engines. (Photo: BBMF)

Most of the Structurally Significant Item (SSI) inspections have now been completed. An elastomeric hose survey has begun, while zonal surveys are also in progress. A considerable portion of the work involves non-destructive testing (NDT), which is now underway and expected to continue for approximately six weeks. All six fuel tanks have been removed from the Lancaster’s wings, and their outer coverings stripped. Engineers from BAE Systems recently visited Duxford to verify the configuration of PA474’s fuel tanks against original drawings. This step is necessary before production begins on a new set of six tanks for the aircraft. At the same time, the radiators and coolant header tanks have been removed and dispatched to a specialist contractor for overhaul.

One of Lancaster PA474s fuel tanks removed from the aircraft with the covering stripped off for inspection and checks of the configuration against the drawings. Photo BBMF scaled
One of Lancaster PA474’s fuel tanks removed from the aircraft, with the covering stripped off for inspection and checks of the configuration against the drawings. (Photo: BBMF)

The main undercarriage units, along with the tail wheel assembly, have also been removed and stripped down for inspection and servicing. The tail leg had been experiencing oil leaks, reduced oleo pressure, and occasional shimmy. Dowty Aviation originally manufactured Lancaster undercarriage components; today, the company forms part of the Safran Group, a leading global supplier of aircraft landing gear systems. Safran engineers visited Duxford on 12 January to examine the assemblies and identified several issues with the tail leg, including configuration discrepancies, seal deterioration, and corrosion on the sliding tube. ARCo and the BBMF Project Team are now working together to rectify these findings, including the manufacture and sourcing of replacement components.

Lancaster PA474s rear fuselage has now been split at the transport joint aft of the mid upper turret mounting point. Photo BBMF scaled
Lancaster PA474’s rear fuselage has now been split at the transport joint aft of the mid-upper turret mounting point. (Photo: BBMF)

One of the more visible milestones in recent weeks has been the separation of the rear fuselage at the transport joint, located just aft of the mid-upper turret position. Dividing the fuselage in this manner allows access to replace the elevator and rudder control rods, which run through the internal structure. Equipment was temporarily loaned from East Kirkby to assist with the process, and a new heavy-duty trestle was fabricated to support the rear fuselage section. The separation was completed successfully on 16 January, and inspections revealed no evidence of corrosion or structural damage at the frame joints. The first batch of components has also been dispatched for ‘bay’ maintenance. This initial shipment includes electrical, avionics, and instrument items sent to SkySmart MRO Ltd, a specialist company providing avionics and mechanical component repair, overhaul, and inventory support services. Further progress reports will be shared with Club members as work continues on this important maintenance program. For more information about the RAF Memorial Flight Official Club, visit www.memorialflightclub.com.

RAF Memorial Flight Club

 
Moreno-Aguiari

Born in Milan, Italy, Moreno moved to the U.S. in 1999 to pursue a career as a commercial pilot. His aviation passion began early, inspired by his uncle, an F-104 Starfighter Crew Chief, and his father, a military traffic controller. Childhood adventures included camping outside military bases and watching planes at Aeroporto Linate. In 1999, he relocated to Atlanta, Georgia, to obtain his commercial pilot license, a move that became permanent. With 24 years in the U.S., he now flies full-time for a Part 91 business aviation company in Atlanta. He is actively involved with the Commemorative Air Force, the D-Day Squadron, and other aviation organizations. He enjoys life with his supportive wife and three wonderful children.

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Born in Milan, Italy, Moreno moved to the U.S. in 1999 to pursue a career as a commercial pilot. His aviation passion began early, inspired by his uncle, an F-104 Starfighter Crew Chief, and his father, a military traffic controller. Childhood adventures included camping outside military bases and watching planes at Aeroporto Linate. In 1999, he relocated to Atlanta, Georgia, to obtain his commercial pilot license, a move that became permanent. With 24 years in the U.S., he now flies full-time for a Part 91 business aviation company in Atlanta. He is actively involved with the Commemorative Air Force, the D-Day Squadron, and other aviation organizations. He enjoys life with his supportive wife and three wonderful children.
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