Iran’s flag carrier begins maintenance on Boeing 747 freighter
Iran’s flag carrier, Iran Air, has begun heavy maintenance on its only Boeing 747 freighter, including a 20,000-flight-cycle inspection being carried out in Iran for the first time.
The project began on September 28 and includes a D-check, structural inspections, specialized repairs and an overhaul of the aircraft’s landing gear. The initial estimate is that the work will take at least six months, although the final timeline will depend on inspection findings, IRNA reported on Saturday.
Among the project’s main tasks is the first non-destructive testing inspection in Iran of the aircraft’s Section 41, along with non-destructive testing of all riveted joints in the upper deck. The work also includes reinforcing the fuselage structure where the landing gear attaches.
Another major task is implementing a modification to the aircraft’s horizontal stabilizer assembly, known as the THS. The specialized tools required for the modification have been manufactured by Iran Air’s own engineering and maintenance specialists, according to IRNA.
The landing gear overhaul will also involve replacing sensitive components with limited service lives in accordance with the manufacturer’s instructions.
The work is being carried out with the participation of Iran Air’s engineering, mechanical and avionics specialists, alongside its specialized workshops.
The completion date could be pushed back if inspections reveal cracks, corrosion or damaged components requiring further assessment and corrective work.
Iran Air expects the Boeing 747 freighter to return to service after the D-check, the 20,000-flight-cycle inspection, the landing gear overhaul and the required THS modifications are completed.