DALLAS- American Airlines received clearance from Federal Aviation officials to return all of its 300 grounded jets to service on Saturday.

After cancellation of 200 flights, Fort Worth-based American was running a full schedule on Saturday afternoon with no cancellation, according to spokesman Charley Wilson.

American said 226 of its MD-80s were back in service but only received clearance to return in service all the remaining grounded jets to service. Flights were canceled as it grounded 300 MD-80 jets to wrap wiring bundles to meet federal safety standards and prevent fires.

American official said they thought they had the needed repair work completed two weeks ago when it scrubbed more than 400 flights, but the Federal Aviation Administration said the wiring was not secured and stowed properly in wheel wells.

American’s entire fleet averages 15 years in age, making it the second oldest in the industry behind Norwest Airlines, according to regulatory filings by the airlines.