LONDON, April 24 (Reuters) - Europe's biggest airline

Ryanair expects Boeing ( BA ) to take 12 to 18 months to

eliminate backlogs in its aircraft deliveries, group chief

executive Michael O'Leary said in London, reinforcing a call for

more quality oversight.

Boeing ( BA ) said this week it expected a slower increase in its

production rate and deliveries as it faces scrutiny over quality

control since a January mid-air panel blowout on a near-new 737

MAX 9.

O'Leary added it didn't make a difference whether Boeing ( BA )

owned supplier Spirit Aerosystems ( SPR ), but "quality control

does need to be improved".

He said Ryanair was still planning to restart flights to Tel

Aviv in June as long as a new low-cost terminal opened and the

security situation allowed.