The before-and-after on a 737 brake job I did last year was wild

I worked on a 737-800 that came in for what looked like a simple brake swap. Before I started, the pads were worn down to like 2mm and the rotors had these heat cracks you could see without even pulling the wheel. After I got the new Honeywell carbon brakes on and torqued everything to spec, the difference was night and day. The taxi test felt smooth compared to the grabby shudder the old ones had. Turns out the airline had been pushing brake changes to 3000 cycles instead of the recommended 2500, and it showed. I talked to the lead mechanic and he said the delay was saving them $400 per landing but costing more in rotor wear. Has anyone else seen airlines pushing component life past the manual limits like that?

3 comments

3 Comments

faith_king5d agoTop Commenter

A buddy of mine saw a regional carrier run tires 15% past the wear limits with no issues.

derek_perez5d ago

Oh man, that's one of those things where I'd probably be the guy who pushes it and immediately gets a blowout on the highway. Like my luck is that bad, I'd end up stranded in the middle of nowhere with a shredded tire and no cell service.

dianahayes5d agoMost Upvoted

Oh man, I feel that so hard! My husband is always the one who's like "it's fine, it'll last another week" and then we're on the side of the road somewhere sketchy. He's had two blowouts in the last year alone from pushing tires way too far past their prime. And yeah, you think you're saving money by squeezing out those extra miles, but then you're paying for a tow truck and a new tire anyway. Plus it's scary when it happens on the highway going 70 mph, I don't know how people take that risk.