AOG definition
 

hello all,

i was asked an interesting question today regarding AOG.
when is an aircraft considered AOG? i.e. when does a delay turn to an AOG.
is there a standardised industry definition that is applied? if yes where can it be found?
and if no are airlines defining the term themselves?

any opinions?:ok:

AOG is as the name suggests. "Aircraft on Ground".

This means the aircraft is grounded awaiting parts to fix a maintenance problem. The term used to afford a higher priority on shipping parts by many airlines. It's now regularly abused, with the result that it really doesn't mean anything special anymore.

Most companies I have worked for work on the premise of an aircraft being deemed AOG when a schedule change is required (not just a delayed service) due to the unserviceable aircraft.

AOG is deemed to be when the aircraft scheduled operation can't legally continue, due to a technical problem that cannot be deferred under an MEL or CDL, or for some other reason..

Unfortunately, in my area (Business aviation) more than once an operator has declared an AOG to get immediate onsite assistance, even for non-critical items such as water systems, cabin interior items, basically anything that pisses off the owner. As a member of a mobile AOG team this irritates us beyond belief but there's nothing we can do about it while the customer is paying for it.

AOG
 

An Aircraft is AOG when a Certificate of Release to service cannot be signed for a defect entered in the Tech Log. This maybe due to the technical defect being outside of the MEL,CDL as stated above and the component or system cannot be defered or rendered inoperative Other words "Grounded".
NO CRS = AOG

thanks for feedback
 

ok so what i am trying to get at here is.
say you get an a/c with a cut MLGW. it needs to be replaced. but i have a wheel and a licensed engineer to change it.
so am i AOG or just delayed?
your thoughts?

Now; that's a tricky one... :ugh:

true, maybe not the best of examples there

Wirelock,

You are both AOG and delayed.

The aircraft became AOG (grounded) the moment the defect in the wheel was noticed.

Just because you have the parts and an engineer, you are AOG until the parts have been replaced and a CRS issued by the certifying engineer.

AOG status used in the stores network is used to expedite supply. In fact you could order a part AOG when the aircraft is still flying. The pilot my have called in a defect which grounds the aircraft on arrival.

AOG
 

Recocnised by all serious carriers as a call for help. As quoted above 'Aircraft On Ground'.

It is not just technical in my experience, however AOG will be used for assistance.

As time has passed, the first example is the reported 'forgot the tech-log'

and the 'where is the Docs folder' AOC, etc

Both AOG, must haves.

AOG is just that 'Help Help Help'

Any argument over delay or cancellation is about stats and bonus payments.



Bored

The OEM (and airlines) I worked for had a completely different definition for AOG than I have read here:

AOG means: an "in service" aircraft had a problem and is now "out of service" awaiting the spare part.

Airlines could (and did) not order spares as AOG when an aircraft was "in scheduled maintenance" or "late out of a check".

If we got an AOG order for a spare part, we guaranteed that, if the part was in stock at our facility, at a supplier facility or at one of the remote locations world wide where we stored spares, it would be shipped within 24 hours. AOG orders carried a 10% handling fee above the shelf price.

YAWN YAWN :ugh:

Means 'knackered'.
"When an aircraft has been grounded and is unable to fly for technical reasons it is referred to as an AOG. An urgent request is sent out for parts or components or engineering assistance to enable the aircraft to be repaired and put back into service in the shortest possible time."

A MW replacement with parts and engineer available as described above is an IATA Code 41; tech delay (this also includes MEL defects being deferred or maintenance action required by MEL).