Jockey Paddy Brennan was banned for 18 days and trainer Fergal O’Brien fined £4,000 after Northern Air finished second in Golf Membership On Sale Now Maiden Hurdle at Wincanton.

The 5-1 chance was making her debut over hurdles having won a point to point at the backend of last year and had one bumper start at Newbury last month since joining the O’Brien team.

Brennan’s mount made up late ground having been held up in the early stages and was eventually beaten three and a quarter lengths by an odds-on favourite in the one-mile-seven-furlong affair.

The stewards inquired into the performance with Brennan stating his instructions were “to switch off” Northern Air as she had been keen last time and finished the race “fairly distressed” after “emptying out”.

Brennan also reported Northern Air had made a respiratory noise and he wanted to ensure she finished more positively, focusing on “keeping the bit up in her mouth, being patient and riding her up the straight to hit the line”.

Both O’Brien and his representative confirmed the instructions and were satisfied with the ride, with the stewards deciding to suspend Brennan and fine O’Brien for “schooling and conditioning the horse on the racecourse”. Northern Air also received a 40-day ban from running.

Senior steward Tom Evetts told Racing TV: “Mr Brennan’s case was that he wanted to hold her up, she raced keenly at Newbury and didn’t finish her race, so his and Mr O’Brien’s priority coming here today was to get her to finish her race strongly.

“I guess our concern came in that having turned out of the back straight at a time when we would like horses to be improving their position, Mr Brennan was very tender in his handling of the mare and then up the entirety of the straight we just felt he wasn’t doing enough on a mare that was passing horses and finishing off strongly.

“The question you could ask is where is the line between intent and schooling, we have done her under schooling. Intent is when the rider is doing the opposite of what we would expect, schooling is when the rider is just not doing enough and up the straight we felt Mr Brennan just wasn’t doing enough.

“The penalty (range) under schooling is 10 to 18 days for the jockey with an entry of 14, as she has finished second strongly, we have had to go to the top of that range and then that applies to Mr O’Brien.”

Brennan’s suspension encompasses April 22-27, May 4 and May 6-16.