AA737-823 From United States of America, joined Mar 2000, 6292 posts, RR: 10
Reply 10, posted (4 years 1 week 6 days 8 hours ago) and read 14325 times:
Quoting Continental (Reply 6): How does a wheel just fall off? Did the tire blow first before it fell?
Poor maintenance (I'm a mechanic, so I'm biased to say that this is the less likely possibility) or metal fatigue.
The wheel assembly is held on with a lug nut, which is torqued to a specific value set by the manufacturer.
The lug nut is then held in place with, not one but TWO bolts, inserted THROUGH the threads of the axle. This should keep the lug nut from coming off, even if it worked itself loose from the torque value somehow.
So, needless to say, one coming off is "not possible." Yet, it happens periodically.
The end of the axle has been known to break off, taking the lug nut and safety nuts with it, which would definitely allow the wheel to zing straight off the end.
dptpa From United States of America, joined Jan 2010, 19 posts, RR: 2
Reply 14, posted (4 years 1 week 6 days 4 hours ago) and read 13082 times:
Here at SFB tower where we normally close at 11:00pm, an overtime shift has been called in to cover the late arrival from KEF. Interesting note on this, my understanding is that the overtime cost tonight does not come out of FAA funds. It will be reimbursed by the airport authority and later billed to Icelandair.
eaa3 From Iceland, joined Sep 2007, 1152 posts, RR: 0
Reply 16, posted (4 years 1 week 6 days 4 hours ago) and read 12887 times:
Quoting Continental (Reply 15): How is Icelandair's maintenance record, just out of curiosity? I might be flying them soon. I'm sure it's fine, but the more info the better.
I don't know if there's a specific maintenance record but their general safety record is excellent. On par with any first world airline. They have not had an accident since 1963. The airline was formed in 1937.