Here is a list of other reportable items. Some are more serious than others. There is a lot more information in the regs regarding ETOPS reliabilty standards, but this is a good start.
(2) In addition to the items required to be reportedby FAR §§ 21.3 and 121.703, the following information [b]should[/b] be included:• In-flight shut downs• Diversions or turnbacks• Uncommanded power changes or surges• Inability to control the engine or obtaindesired power• Problems in systems considered to have afundamental influence on flight safety• Failure to start the APU while airborne• Uncommanded inflight shut-downs of theAPU• Any other event the inspector considers detri-mental to extended-range operations(3) Items/systems that are considered critical toflight safety include the following:• Electrical, including batteries• Hydraulic• Pneumatic• Flight instrumentation• Fuel• Flight control• Ice protection• Engine start and ignition• Propulsion system instruments• Navigation and communications• Auxiliary power-units• Air conditioning and pressurization• Cargo fire suppression• Emergency equipment• Any other equipment that is required forextended range operations
Well should doesnt mean they have to. If you know contract language.