RoseFlyer From United States of America, joined Feb 2004, 9201 posts, RR: 52 Reply 2, posted (2 years 2 months 2 weeks 4 days 3 hours ago) and read 3012 times:
In the United States an airplane fleet looses ETOPS if it has inflight shutdowns at a rate greater than .01% of all flights on a twin engine airplane model (IIRC). There are many other reasons why ETOPS can be lost, but excessively high shutdown rate is the easiest one to define.
Single airplanes in a fleet losing ETOPS capability for a given number of flights is also possible. In addition to high shutdown rate, open deferred items, unapproved maintenance, etc can restrict operations.
If you have never designed an airplane part before, let the real designers do the work!
HAL From United States of America, joined Jan 2002, 2502 posts, RR: 53 Reply 3, posted (2 years 2 months 2 weeks 4 days 3 hours ago) and read 2909 times:
If an airline doesn't keep the aircraft maintained to ETOPS standards, or lets an aircraft fly an ETOPS leg with a maintenance deferral that may be okay for domestic flights but not for ETOPS, there will be repercussions. Training for the flight crews needs to be up to regulatory standards too. There's also an enormous amount of paperwork involved in the maintenance and training areas. If there are failures in keeping appropriate records (even if the actual procedures were accomplished), the ETOPS certifcate can be pulled too. Any one of these, if repeated or done knowing they're violating the ETOPS regulations, could cause the loss of the certificate.
One smooth landing is skill. Two in a row is luck. Three in a row and someone is lying.
I am not sure if you are limiting your question to "rejection" of an application, or including loss of certification...
If the latter, the Azores glider incident resulted in a temporary loss of Air Transat's A330 ETOPS rating (and a downgrading of the entire remainder of the fleet).
The attached story contains a summary at the end; it refers to the fact that ETOPS authority was suspended immediately follwoing the incident (August 24) and partially restored on September 7. Full ETOPS rating was restored the follwoing May.
I wonder how much extra fuel AT ended up buring because of that?