Past accident investigations have shown that necessary aircraft safety and maintenance standards were not being implemented.

We have no reason to believe that proper safety and maintenance standards are now being reliably adhered to.

Airline mechanics complain of an erosion of maintenance standards.

Several Air Philippines planes have already been grounded because of Government concerns about maintenance standards.

There have been some recent accidents involving light aircraft, which sometimes have poor maintenance standards.

We're confident of our high maintenance standards, and guarantee generous repayments if they're immobilised for a day or more.

Probably, it didn't have your maintenance standards.

Some company commanders say none of their vehicles fully meet the Army's maintenance standards.

Manhattan Plaza's maintenance standards are high.

With less traffic, lower profits, and little prospect of a growth in trade, maintenance standards fell.