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Japan's leading heavy machinery manufacturer IHI Corp. reported 6,340 cases of improper maintenance checks on commercial aircraft engines, a dramatic leap from the 211 reported in its March 8 interim investigation report.
The increase came as the company added aircraft engines used by foreign airlines in its investigation of irregularities, announced Friday. The interim report covered only aircraft engines operated by domestic carriers.
The Ministry of Industry imposed on the company an administrative penalty based on the law on the manufacture of aircraft. IHI has been commissioned to perform engine maintenance and repair work according to approved methods.
It is very rare that an administrative sanction is applied according to the law.
The number of cases of improper aircraft engine checks at IHI could continue to increase as the Department of Transport continues its investigation.
IHI confirmed that it confirmed that the irregularities do not jeopardize the flight safety of the aircraft concerned.
Between January 2017 and January 2008, the company carried out maintenance checks on a total of 212 engines used in aircraft operated by domestic and foreign carriers. Of these, 209 engines were checked by unskilled workers and the inspection documents were falsified using seals of skilled workers, according to the company.
Such fraudulent use of qualified inspector seals was found in 5,846 cases. Other cases involved misconduct such as unauthorized changes to inspection procedures and manipulation of inspection dates.
The irregularities found at the IHI were discovered during an on-site inspection by the Ministry of Transport.
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